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<dt>Revision</dt> <dd><a href="http://trac.webkit.org/projects/webkit/changeset/260479">260479</a></dd>
<dt>Author</dt> <dd>repstein@apple.com</dd>
<dt>Date</dt> <dd>2020-04-21 17:56:30 -0700 (Tue, 21 Apr 2020)</dd>
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<h3>Log Message</h3>
<pre>Revert <a href="http://trac.webkit.org/projects/webkit/changeset/259589">r259589</a>. rdar://problem/62141646</pre>

<h3>Modified Paths</h3>
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<li><a href="#branchessafari610111branchSourceThirdPartyANGLEsrctestsgl_testsFramebufferTestcpp">branches/safari-610.1.11-branch/Source/ThirdParty/ANGLE/src/tests/gl_tests/FramebufferTest.cpp</a></li>
<li><a href="#branchessafari610111branchSourceThirdPartyANGLEsrctestsgl_testsGLSLTestcpp">branches/safari-610.1.11-branch/Source/ThirdParty/ANGLE/src/tests/gl_tests/GLSLTest.cpp</a></li>
<li><a href="#branchessafari610111branchSourceThirdPartyANGLEsrctestsgl_testsImageTestcpp">branches/safari-610.1.11-branch/Source/ThirdParty/ANGLE/src/tests/gl_tests/ImageTest.cpp</a></li>
<li><a href="#branchessafari610111branchSourceThirdPartyANGLEsrctestsgl_testsInstancingTestcpp">branches/safari-610.1.11-branch/Source/ThirdParty/ANGLE/src/tests/gl_tests/InstancingTest.cpp</a></li>
<li><a href="#branchessafari610111branchSourceThirdPartyANGLEsrctestsgl_testsMemoryObjectTestcpp">branches/safari-610.1.11-branch/Source/ThirdParty/ANGLE/src/tests/gl_tests/MemoryObjectTest.cpp</a></li>
<li><a href="#branchessafari610111branchSourceThirdPartyANGLEsrctestsgl_testsMipmapTestcpp">branches/safari-610.1.11-branch/Source/ThirdParty/ANGLE/src/tests/gl_tests/MipmapTest.cpp</a></li>
<li><a href="#branchessafari610111branchSourceThirdPartyANGLEsrctestsgl_testsMultisampleCompatibilityTestcpp">branches/safari-610.1.11-branch/Source/ThirdParty/ANGLE/src/tests/gl_tests/MultisampleCompatibilityTest.cpp</a></li>
<li><a href="#branchessafari610111branchSourceThirdPartyANGLEsrctestsgl_testsProgramBinaryTestcpp">branches/safari-610.1.11-branch/Source/ThirdParty/ANGLE/src/tests/gl_tests/ProgramBinaryTest.cpp</a></li>
<li><a href="#branchessafari610111branchSourceThirdPartyANGLEsrctestsgl_testsProgramInterfaceTestcpp">branches/safari-610.1.11-branch/Source/ThirdParty/ANGLE/src/tests/gl_tests/ProgramInterfaceTest.cpp</a></li>
<li><a href="#branchessafari610111branchSourceThirdPartyANGLEsrctestsgl_testsRobustResourceInitTestcpp">branches/safari-610.1.11-branch/Source/ThirdParty/ANGLE/src/tests/gl_tests/RobustResourceInitTest.cpp</a></li>
<li><a href="#branchessafari610111branchSourceThirdPartyANGLEsrctestsgl_testsShaderStorageBufferTestcpp">branches/safari-610.1.11-branch/Source/ThirdParty/ANGLE/src/tests/gl_tests/ShaderStorageBufferTest.cpp</a></li>
<li><a href="#branchessafari610111branchSourceThirdPartyANGLEsrctestsgl_testsSimpleOperationTestcpp">branches/safari-610.1.11-branch/Source/ThirdParty/ANGLE/src/tests/gl_tests/SimpleOperationTest.cpp</a></li>
<li><a href="#branchessafari610111branchSourceThirdPartyANGLEsrctestsgl_testsStateChangeTestcpp">branches/safari-610.1.11-branch/Source/ThirdParty/ANGLE/src/tests/gl_tests/StateChangeTest.cpp</a></li>
<li><a href="#branchessafari610111branchSourceThirdPartyANGLEsrctestsgl_testsTextureTestcpp">branches/safari-610.1.11-branch/Source/ThirdParty/ANGLE/src/tests/gl_tests/TextureTest.cpp</a></li>
<li><a href="#branchessafari610111branchSourceThirdPartyANGLEsrctestsgl_testsTransformFeedbackTestcpp">branches/safari-610.1.11-branch/Source/ThirdParty/ANGLE/src/tests/gl_tests/TransformFeedbackTest.cpp</a></li>
<li><a href="#branchessafari610111branchSourceThirdPartyANGLEsrctestsgl_testsVertexAttributeTestcpp">branches/safari-610.1.11-branch/Source/ThirdParty/ANGLE/src/tests/gl_tests/VertexAttributeTest.cpp</a></li>
<li><a href="#branchessafari610111branchSourceThirdPartyANGLEsrctestsgl_testsVulkanExternalImageTestcpp">branches/safari-610.1.11-branch/Source/ThirdParty/ANGLE/src/tests/gl_tests/VulkanExternalImageTest.cpp</a></li>
<li><a href="#branchessafari610111branchSourceThirdPartyANGLEsrctestsgl_testsWebGLCompatibilityTestcpp">branches/safari-610.1.11-branch/Source/ThirdParty/ANGLE/src/tests/gl_tests/WebGLCompatibilityTest.cpp</a></li>
<li><a href="#branchessafari610111branchSourceThirdPartyANGLEsrctestsgl_testsgles1BasicDrawTestcpp">branches/safari-610.1.11-branch/Source/ThirdParty/ANGLE/src/tests/gl_tests/gles1/BasicDrawTest.cpp</a></li>
<li><a href="#branchessafari610111branchSourceThirdPartyANGLEsrctestsgl_testsgles1MatrixBuiltinsTestcpp">branches/safari-610.1.11-branch/Source/ThirdParty/ANGLE/src/tests/gl_tests/gles1/MatrixBuiltinsTest.cpp</a></li>
<li><a href="#branchessafari610111branchSourceThirdPartyANGLEsrctestsgl_testsgles1TextureParameterTestcpp">branches/safari-610.1.11-branch/Source/ThirdParty/ANGLE/src/tests/gl_tests/gles1/TextureParameterTest.cpp</a></li>
<li><a href="#branchessafari610111branchSourceThirdPartyANGLEsrctestsgles1_conformance_testsConformanceTestscpp">branches/safari-610.1.11-branch/Source/ThirdParty/ANGLE/src/tests/gles1_conformance_tests/ConformanceTests.cpp</a></li>
<li><a href="#branchessafari610111branchSourceThirdPartyANGLEsrctestsperf_testsANGLEPerfTestcpp">branches/safari-610.1.11-branch/Source/ThirdParty/ANGLE/src/tests/perf_tests/ANGLEPerfTest.cpp</a></li>
<li><a href="#branchessafari610111branchSourceThirdPartyANGLEsrctestsperf_testsANGLEPerfTesth">branches/safari-610.1.11-branch/Source/ThirdParty/ANGLE/src/tests/perf_tests/ANGLEPerfTest.h</a></li>
<li><a href="#branchessafari610111branchSourceThirdPartyANGLEsrctestsperf_testsANGLEPerfTestArgscpp">branches/safari-610.1.11-branch/Source/ThirdParty/ANGLE/src/tests/perf_tests/ANGLEPerfTestArgs.cpp</a></li>
<li><a href="#branchessafari610111branchSourceThirdPartyANGLEsrctestsperf_testsANGLEPerfTestArgsh">branches/safari-610.1.11-branch/Source/ThirdParty/ANGLE/src/tests/perf_tests/ANGLEPerfTestArgs.h</a></li>
<li><a href="#branchessafari610111branchSourceThirdPartyANGLEsrctestsperf_testsBitSetIteratorPerfcpp">branches/safari-610.1.11-branch/Source/ThirdParty/ANGLE/src/tests/perf_tests/BitSetIteratorPerf.cpp</a></li>
<li><a href="#branchessafari610111branchSourceThirdPartyANGLEsrctestsperf_testsDrawCallPerfcpp">branches/safari-610.1.11-branch/Source/ThirdParty/ANGLE/src/tests/perf_tests/DrawCallPerf.cpp</a></li>
<li><a href="#branchessafari610111branchSourceThirdPartyANGLEsrctestsperf_testsDrawCallPerfParamscpp">branches/safari-610.1.11-branch/Source/ThirdParty/ANGLE/src/tests/perf_tests/DrawCallPerfParams.cpp</a></li>
<li><a href="#branchessafari610111branchSourceThirdPartyANGLEsrctestsperf_testsDrawCallPerfParamsh">branches/safari-610.1.11-branch/Source/ThirdParty/ANGLE/src/tests/perf_tests/DrawCallPerfParams.h</a></li>
<li><a href="#branchessafari610111branchSourceThirdPartyANGLEsrctestsperf_testsDrawElementsPerfcpp">branches/safari-610.1.11-branch/Source/ThirdParty/ANGLE/src/tests/perf_tests/DrawElementsPerf.cpp</a></li>
<li><a href="#branchessafari610111branchSourceThirdPartyANGLEsrctestsperf_testsTextureUploadPerfcpp">branches/safari-610.1.11-branch/Source/ThirdParty/ANGLE/src/tests/perf_tests/TextureUploadPerf.cpp</a></li>
<li><a href="#branchessafari610111branchSourceThirdPartyANGLEsrctestsperf_testsTracePerfTestcpp">branches/safari-610.1.11-branch/Source/ThirdParty/ANGLE/src/tests/perf_tests/TracePerfTest.cpp</a></li>
<li><a href="#branchessafari610111branchSourceThirdPartyANGLEsrctestsperf_testsrestricted_tracesRestrictedTraceTestsmd">branches/safari-610.1.11-branch/Source/ThirdParty/ANGLE/src/tests/perf_tests/restricted_traces/RestrictedTraceTests.md</a></li>
<li><a href="#branchessafari610111branchSourceThirdPartyANGLEsrctestsperf_testsrestricted_tracesangle_trace_perf_testsgni">branches/safari-610.1.11-branch/Source/ThirdParty/ANGLE/src/tests/perf_tests/restricted_traces/angle_trace_perf_tests.gni</a></li>
<li><a href="#branchessafari610111branchSourceThirdPartyANGLEsrctestsperf_teststhird_partyperfperf_testcc">branches/safari-610.1.11-branch/Source/ThirdParty/ANGLE/src/tests/perf_tests/third_party/perf/perf_test.cc</a></li>
<li><a href="#branchessafari610111branchSourceThirdPartyANGLEsrcteststest_utilsANGLETestcpp">branches/safari-610.1.11-branch/Source/ThirdParty/ANGLE/src/tests/test_utils/ANGLETest.cpp</a></li>
<li><a href="#branchessafari610111branchSourceThirdPartyANGLEsrcteststest_utilsANGLETesth">branches/safari-610.1.11-branch/Source/ThirdParty/ANGLE/src/tests/test_utils/ANGLETest.h</a></li>
<li><a href="#branchessafari610111branchSourceThirdPartyANGLEsrcteststest_utilsVulkanExternalHelpercpp">branches/safari-610.1.11-branch/Source/ThirdParty/ANGLE/src/tests/test_utils/VulkanExternalHelper.cpp</a></li>
<li><a href="#branchessafari610111branchSourceThirdPartyANGLEsrcteststest_utilsVulkanExternalHelperh">branches/safari-610.1.11-branch/Source/ThirdParty/ANGLE/src/tests/test_utils/VulkanExternalHelper.h</a></li>
<li><a href="#branchessafari610111branchSourceThirdPartyANGLEsrcteststest_utilsangle_test_configscpp">branches/safari-610.1.11-branch/Source/ThirdParty/ANGLE/src/tests/test_utils/angle_test_configs.cpp</a></li>
<li><a href="#branchessafari610111branchSourceThirdPartyANGLEsrcteststest_utilsangle_test_configsh">branches/safari-610.1.11-branch/Source/ThirdParty/ANGLE/src/tests/test_utils/angle_test_configs.h</a></li>
<li><a href="#branchessafari610111branchSourceThirdPartyANGLEsrcteststest_utilsangle_test_instantiatecpp">branches/safari-610.1.11-branch/Source/ThirdParty/ANGLE/src/tests/test_utils/angle_test_instantiate.cpp</a></li>
<li><a href="#branchessafari610111branchSourceThirdPartyANGLEsrcteststest_utilsangle_test_instantiateh">branches/safari-610.1.11-branch/Source/ThirdParty/ANGLE/src/tests/test_utils/angle_test_instantiate.h</a></li>
<li><a href="#branchessafari610111branchSourceThirdPartyANGLEsrcteststest_utilsangle_test_platformcpp">branches/safari-610.1.11-branch/Source/ThirdParty/ANGLE/src/tests/test_utils/angle_test_platform.cpp</a></li>
<li><a href="#branchessafari610111branchSourceThirdPartyANGLEsrcteststest_utilsangle_test_platformh">branches/safari-610.1.11-branch/Source/ThirdParty/ANGLE/src/tests/test_utils/angle_test_platform.h</a></li>
<li><a href="#branchessafari610111branchSourceThirdPartyANGLEsrcteststest_utilsrunnerTestSuitecpp">branches/safari-610.1.11-branch/Source/ThirdParty/ANGLE/src/tests/test_utils/runner/TestSuite.cpp</a></li>
<li><a href="#branchessafari610111branchSourceThirdPartyANGLEsrcthird_partyvolkBUILDgn">branches/safari-610.1.11-branch/Source/ThirdParty/ANGLE/src/third_party/volk/BUILD.gn</a></li>
<li><a href="#branchessafari610111branchSourceThirdPartyANGLEthird_partyBUILDgn">branches/safari-610.1.11-branch/Source/ThirdParty/ANGLE/third_party/BUILD.gn</a></li>
<li><a href="#branchessafari610111branchSourceThirdPartyANGLEthird_partylibpngBUILDgn">branches/safari-610.1.11-branch/Source/ThirdParty/ANGLE/third_party/libpng/BUILD.gn</a></li>
<li><a href="#branchessafari610111branchSourceThirdPartyANGLEutilBUILDgn">branches/safari-610.1.11-branch/Source/ThirdParty/ANGLE/util/BUILD.gn</a></li>
<li><a href="#branchessafari610111branchSourceThirdPartyANGLEutilEGLPlatformParametersh">branches/safari-610.1.11-branch/Source/ThirdParty/ANGLE/util/EGLPlatformParameters.h</a></li>
<li><a href="#branchessafari610111branchSourceThirdPartyANGLEutilEGLWindowcpp">branches/safari-610.1.11-branch/Source/ThirdParty/ANGLE/util/EGLWindow.cpp</a></li>
<li><a href="#branchessafari610111branchSourceThirdPartyANGLEutilEGLWindowh">branches/safari-610.1.11-branch/Source/ThirdParty/ANGLE/util/EGLWindow.h</a></li>
<li><a href="#branchessafari610111branchSourceThirdPartyANGLEutilfuchsiaScenicWindowcpp">branches/safari-610.1.11-branch/Source/ThirdParty/ANGLE/util/fuchsia/ScenicWindow.cpp</a></li>
<li><a href="#branchessafari610111branchSourceThirdPartyANGLEutilfuchsiaScenicWindowh">branches/safari-610.1.11-branch/Source/ThirdParty/ANGLE/util/fuchsia/ScenicWindow.h</a></li>
<li><a href="#branchessafari610111branchSourceThirdPartyANGLEutilgles_loader_autogencpp">branches/safari-610.1.11-branch/Source/ThirdParty/ANGLE/util/gles_loader_autogen.cpp</a></li>
<li><a href="#branchessafari610111branchSourceThirdPartyANGLEutilgles_loader_autogenh">branches/safari-610.1.11-branch/Source/ThirdParty/ANGLE/util/gles_loader_autogen.h</a></li>
<li><a href="#branchessafari610111branchSourceThirdPartyANGLEutilrandom_utilsh">branches/safari-610.1.11-branch/Source/ThirdParty/ANGLE/util/random_utils.h</a></li>
<li><a href="#branchessafari610111branchSourceThirdPartyANGLEutilutil_glh">branches/safari-610.1.11-branch/Source/ThirdParty/ANGLE/util/util_gl.h</a></li>
</ul>

<h3>Added Paths</h3>
<ul>
<li><a href="#branchessafari610111branchSourceThirdPartyANGLEsrccommith">branches/safari-610.1.11-branch/Source/ThirdParty/ANGLE/src/commit.h</a></li>
<li><a href="#branchessafari610111branchSourceThirdPartyANGLEsrclibANGLEHandleRangeAllocatorcpp">branches/safari-610.1.11-branch/Source/ThirdParty/ANGLE/src/libANGLE/HandleRangeAllocator.cpp</a></li>
<li><a href="#branchessafari610111branchSourceThirdPartyANGLEsrclibANGLEHandleRangeAllocatorh">branches/safari-610.1.11-branch/Source/ThirdParty/ANGLE/src/libANGLE/HandleRangeAllocator.h</a></li>
<li><a href="#branchessafari610111branchSourceThirdPartyANGLEsrclibANGLEHandleRangeAllocator_unittestcpp">branches/safari-610.1.11-branch/Source/ThirdParty/ANGLE/src/libANGLE/HandleRangeAllocator_unittest.cpp</a></li>
<li><a href="#branchessafari610111branchSourceThirdPartyANGLEsrclibANGLEPathcpp">branches/safari-610.1.11-branch/Source/ThirdParty/ANGLE/src/libANGLE/Path.cpp</a></li>
<li><a href="#branchessafari610111branchSourceThirdPartyANGLEsrclibANGLEPathh">branches/safari-610.1.11-branch/Source/ThirdParty/ANGLE/src/libANGLE/Path.h</a></li>
<li><a href="#branchessafari610111branchSourceThirdPartyANGLEsrclibANGLErendererPathImplh">branches/safari-610.1.11-branch/Source/ThirdParty/ANGLE/src/libANGLE/renderer/PathImpl.h</a></li>
<li><a href="#branchessafari610111branchSourceThirdPartyANGLEsrclibANGLErendererglPathGLcpp">branches/safari-610.1.11-branch/Source/ThirdParty/ANGLE/src/libANGLE/renderer/gl/PathGL.cpp</a></li>
<li><a href="#branchessafari610111branchSourceThirdPartyANGLEsrclibANGLErendererglPathGLh">branches/safari-610.1.11-branch/Source/ThirdParty/ANGLE/src/libANGLE/renderer/gl/PathGL.h</a></li>
<li><a href="#branchessafari610111branchSourceThirdPartyANGLEsrclibANGLErenderernullPathNULLcpp">branches/safari-610.1.11-branch/Source/ThirdParty/ANGLE/src/libANGLE/renderer/null/PathNULL.cpp</a></li>
<li><a href="#branchessafari610111branchSourceThirdPartyANGLEsrclibANGLErenderernullPathNULLh">branches/safari-610.1.11-branch/Source/ThirdParty/ANGLE/src/libANGLE/renderer/null/PathNULL.h</a></li>
<li><a href="#branchessafari610111branchSourceThirdPartyANGLEsrclibANGLErenderervulkanCommandGraphcpp">branches/safari-610.1.11-branch/Source/ThirdParty/ANGLE/src/libANGLE/renderer/vulkan/CommandGraph.cpp</a></li>
<li><a href="#branchessafari610111branchSourceThirdPartyANGLEsrclibANGLErenderervulkanCommandGraphh">branches/safari-610.1.11-branch/Source/ThirdParty/ANGLE/src/libANGLE/renderer/vulkan/CommandGraph.h</a></li>
<li><a href="#branchessafari610111branchSourceThirdPartyANGLEsrctestsgl_testsPathRenderingTestcpp">branches/safari-610.1.11-branch/Source/ThirdParty/ANGLE/src/tests/gl_tests/PathRenderingTest.cpp</a></li>
<li><a href="#branchessafari610111branchSourceThirdPartyANGLEsrctestsperf_testsrestricted_tracestrex_1300_1310targzsha1">branches/safari-610.1.11-branch/Source/ThirdParty/ANGLE/src/tests/perf_tests/restricted_traces/trex_1300_1310.tar.gz.sha1</a></li>
<li><a href="#branchessafari610111branchSourceThirdPartyANGLEsrctestsperf_testsrestricted_tracestrex_200_210targzsha1">branches/safari-610.1.11-branch/Source/ThirdParty/ANGLE/src/tests/perf_tests/restricted_traces/trex_200_210.tar.gz.sha1</a></li>
<li><a href="#branchessafari610111branchSourceThirdPartyANGLEsrctestsperf_testsrestricted_tracestrex_800_810targzsha1">branches/safari-610.1.11-branch/Source/ThirdParty/ANGLE/src/tests/perf_tests/restricted_traces/trex_800_810.tar.gz.sha1</a></li>
<li><a href="#branchessafari610111branchSourceThirdPartyANGLEsrctestsperf_testsrestricted_tracestrex_900_910targzsha1">branches/safari-610.1.11-branch/Source/ThirdParty/ANGLE/src/tests/perf_tests/restricted_traces/trex_900_910.tar.gz.sha1</a></li>
<li><a href="#branchessafari610111branchSourceThirdPartyANGLEutilutilgni">branches/safari-610.1.11-branch/Source/ThirdParty/ANGLE/util/util.gni</a></li>
</ul>

<h3>Removed Paths</h3>
<ul>
<li><a href="#branchessafari610111branchSourceThirdPartyANGLEdocDevSetupAndroidmd">branches/safari-610.1.11-branch/Source/ThirdParty/ANGLE/doc/DevSetupAndroid.md</a></li>
<li><a href="#branchessafari610111branchSourceThirdPartyANGLEextensionsANGLE_external_objects_fuchsiatxt">branches/safari-610.1.11-branch/Source/ThirdParty/ANGLE/extensions/ANGLE_external_objects_fuchsia.txt</a></li>
<li><a href="#branchessafari610111branchSourceThirdPartyANGLEextensionsEGL_ANGLE_platform_angle_device_type_egltxt">branches/safari-610.1.11-branch/Source/ThirdParty/ANGLE/extensions/EGL_ANGLE_platform_angle_device_type_egl.txt</a></li>
<li><a href="#branchessafari610111branchSourceThirdPartyANGLEincludevulkanvulkan_fuchsia_exth">branches/safari-610.1.11-branch/Source/ThirdParty/ANGLE/include/vulkan/vulkan_fuchsia_ext.h</a></li>
<li><a href="#branchessafari610111branchSourceThirdPartyANGLEscriptsgenerate_android_bppy">branches/safari-610.1.11-branch/Source/ThirdParty/ANGLE/scripts/generate_android_bp.py</a></li>
<li><a href="#branchessafari610111branchSourceThirdPartyANGLEscriptsroll_aospsh">branches/safari-610.1.11-branch/Source/ThirdParty/ANGLE/scripts/roll_aosp.sh</a></li>
<li><a href="#branchessafari610111branchSourceThirdPartyANGLEsrcandroid_system_settingsassetsa4a_rulesjson">branches/safari-610.1.11-branch/Source/ThirdParty/ANGLE/src/android_system_settings/assets/a4a_rules.json</a></li>
<li><a href="#branchessafari610111branchSourceThirdPartyANGLEsrcandroid_system_settingsresdrawableiconpng">branches/safari-610.1.11-branch/Source/ThirdParty/ANGLE/src/android_system_settings/res/drawable/icon.png</a></li>
<li><a href="#branchessafari610111branchSourceThirdPartyANGLEsrcandroid_system_settingsreslayoutfragmentxml">branches/safari-610.1.11-branch/Source/ThirdParty/ANGLE/src/android_system_settings/res/layout/fragment.xml</a></li>
<li><a href="#branchessafari610111branchSourceThirdPartyANGLEsrcandroid_system_settingsresvaluesdimensxml">branches/safari-610.1.11-branch/Source/ThirdParty/ANGLE/src/android_system_settings/res/values/dimens.xml</a></li>
<li><a href="#branchessafari610111branchSourceThirdPartyANGLEsrcandroid_system_settingsresvaluesdriversxml">branches/safari-610.1.11-branch/Source/ThirdParty/ANGLE/src/android_system_settings/res/values/drivers.xml</a></li>
<li><a href="#branchessafari610111branchSourceThirdPartyANGLEsrcandroid_system_settingsresvaluesglobal_settingsxml">branches/safari-610.1.11-branch/Source/ThirdParty/ANGLE/src/android_system_settings/res/values/global_settings.xml</a></li>
<li><a href="#branchessafari610111branchSourceThirdPartyANGLEsrcandroid_system_settingsresvaluesintentsxml">branches/safari-610.1.11-branch/Source/ThirdParty/ANGLE/src/android_system_settings/res/values/intents.xml</a></li>
<li><a href="#branchessafari610111branchSourceThirdPartyANGLEsrcandroid_system_settingsresvaluespreference_keysxml">branches/safari-610.1.11-branch/Source/ThirdParty/ANGLE/src/android_system_settings/res/values/preference_keys.xml</a></li>
<li><a href="#branchessafari610111branchSourceThirdPartyANGLEsrcandroid_system_settingsresvaluesstringsxml">branches/safari-610.1.11-branch/Source/ThirdParty/ANGLE/src/android_system_settings/res/values/strings.xml</a></li>
<li><a href="#branchessafari610111branchSourceThirdPartyANGLEsrcandroid_system_settingsresvaluesafstringsxml">branches/safari-610.1.11-branch/Source/ThirdParty/ANGLE/src/android_system_settings/res/values-af/strings.xml</a></li>
<li><a href="#branchessafari610111branchSourceThirdPartyANGLEsrcandroid_system_settingsresvaluesamstringsxml">branches/safari-610.1.11-branch/Source/ThirdParty/ANGLE/src/android_system_settings/res/values-am/strings.xml</a></li>
<li><a href="#branchessafari610111branchSourceThirdPartyANGLEsrcandroid_system_settingsresvaluesarstringsxml">branches/safari-610.1.11-branch/Source/ThirdParty/ANGLE/src/android_system_settings/res/values-ar/strings.xml</a></li>
<li><a href="#branchessafari610111branchSourceThirdPartyANGLEsrcandroid_system_settingsresvaluesasstringsxml">branches/safari-610.1.11-branch/Source/ThirdParty/ANGLE/src/android_system_settings/res/values-as/strings.xml</a></li>
<li><a href="#branchessafari610111branchSourceThirdPartyANGLEsrcandroid_system_settingsresvaluesazstringsxml">branches/safari-610.1.11-branch/Source/ThirdParty/ANGLE/src/android_system_settings/res/values-az/strings.xml</a></li>
<li><a href="#branchessafari610111branchSourceThirdPartyANGLEsrcandroid_system_settingsresvaluesbsrLatnstringsxml">branches/safari-610.1.11-branch/Source/ThirdParty/ANGLE/src/android_system_settings/res/values-b+sr+Latn/strings.xml</a></li>
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<li><a href="#branchessafari610111branchSourceThirdPartyANGLEsrclibANGLErenderervulkanmacIOSurfaceSurfaceVkMach">branches/safari-610.1.11-branch/Source/ThirdParty/ANGLE/src/libANGLE/renderer/vulkan/mac/IOSurfaceSurfaceVkMac.h</a></li>
<li><a href="#branchessafari610111branchSourceThirdPartyANGLEsrclibANGLErenderervulkanmacIOSurfaceSurfaceVkMacmm">branches/safari-610.1.11-branch/Source/ThirdParty/ANGLE/src/libANGLE/renderer/vulkan/mac/IOSurfaceSurfaceVkMac.mm</a></li>
<li><a href="#branchessafari610111branchSourceThirdPartyANGLEsrclibANGLErenderervulkanshadersgenConvertIndexIndirectLineLoopcomp00000002inc">branches/safari-610.1.11-branch/Source/ThirdParty/ANGLE/src/libANGLE/renderer/vulkan/shaders/gen/ConvertIndexIndirectLineLoop.comp.00000002.inc</a></li>
<li><a href="#branchessafari610111branchSourceThirdPartyANGLEsrctestsOWNERS">branches/safari-610.1.11-branch/Source/ThirdParty/ANGLE/src/tests/OWNERS</a></li>
<li><a href="#branchessafari610111branchSourceThirdPartyANGLEsrctestsgl_testsContextNoErrorTestcpp">branches/safari-610.1.11-branch/Source/ThirdParty/ANGLE/src/tests/gl_tests/ContextNoErrorTest.cpp</a></li>
<li><a href="#branchessafari610111branchSourceThirdPartyANGLEsrctestsgl_testsExternalWrapTestcpp">branches/safari-610.1.11-branch/Source/ThirdParty/ANGLE/src/tests/gl_tests/ExternalWrapTest.cpp</a></li>
<li><a href="#branchessafari610111branchSourceThirdPartyANGLEsrctestsgl_testsShaderNonConstGlobalInitializerTestcpp">branches/safari-610.1.11-branch/Source/ThirdParty/ANGLE/src/tests/gl_tests/ShaderNonConstGlobalInitializerTest.cpp</a></li>
<li><a href="#branchessafari610111branchSourceThirdPartyANGLEsrctestsgl_testsgles1BootAnimationTestcpp">branches/safari-610.1.11-branch/Source/ThirdParty/ANGLE/src/tests/gl_tests/gles1/BootAnimationTest.cpp</a></li>
<li><a href="#branchessafari610111branchSourceThirdPartyANGLEsrctestsperf_testsglmark2Benchmarkcpp">branches/safari-610.1.11-branch/Source/ThirdParty/ANGLE/src/tests/perf_tests/glmark2Benchmark.cpp</a></li>
<li><a href="#branchessafari610111branchSourceThirdPartyANGLEsrctestsperf_testsrestricted_tracesgitignore">branches/safari-610.1.11-branch/Source/ThirdParty/ANGLE/src/tests/perf_tests/restricted_traces/.gitignore</a></li>
<li><a href="#branchessafari610111branchSourceThirdPartyANGLEsrctestsperf_testsrestricted_tracesOWNERS">branches/safari-610.1.11-branch/Source/ThirdParty/ANGLE/src/tests/perf_tests/restricted_traces/OWNERS</a></li>
<li><a href="#branchessafari610111branchSourceThirdPartyANGLEsrctestsperf_testsrestricted_tracesmanhattan_10targzsha1">branches/safari-610.1.11-branch/Source/ThirdParty/ANGLE/src/tests/perf_tests/restricted_traces/manhattan_10.tar.gz.sha1</a></li>
<li><a href="#branchessafari610111branchSourceThirdPartyANGLEsrctestsperf_testsrestricted_tracestrex_200targzsha1">branches/safari-610.1.11-branch/Source/ThirdParty/ANGLE/src/tests/perf_tests/restricted_traces/trex_200.tar.gz.sha1</a></li>
<li><a href="#branchessafari610111branchSourceThirdPartyANGLEsrcthird_partyfindignore">branches/safari-610.1.11-branch/Source/ThirdParty/ANGLE/src/third_party/.find-ignore</a></li>
<li><a href="#branchessafari610111branchSourceThirdPartyANGLEthird_partyfindignore">branches/safari-610.1.11-branch/Source/ThirdParty/ANGLE/third_party/.find-ignore</a></li>
<li><a href="#branchessafari610111branchSourceThirdPartyANGLEthird_partyglmark2BUILDgn">branches/safari-610.1.11-branch/Source/ThirdParty/ANGLE/third_party/glmark2/BUILD.gn</a></li>
<li><a href="#branchessafari610111branchSourceThirdPartyANGLEthird_partyglmark2READMEangle">branches/safari-610.1.11-branch/Source/ThirdParty/ANGLE/third_party/glmark2/README.angle</a></li>
<li><a href="#branchessafari610111branchSourceThirdPartyANGLEtoolsflexbisonREADMEmd">branches/safari-610.1.11-branch/Source/ThirdParty/ANGLE/tools/flex-bison/README.md</a></li>
<li><a href="#branchessafari610111branchSourceThirdPartyANGLEtoolsflexbisonlinuxbisonsha1">branches/safari-610.1.11-branch/Source/ThirdParty/ANGLE/tools/flex-bison/linux/bison.sha1</a></li>
<li><a href="#branchessafari610111branchSourceThirdPartyANGLEtoolsflexbisonlinuxflexsha1">branches/safari-610.1.11-branch/Source/ThirdParty/ANGLE/tools/flex-bison/linux/flex.sha1</a></li>
<li><a href="#branchessafari610111branchSourceThirdPartyANGLEtoolsflexbisonthird_partygitattributes">branches/safari-610.1.11-branch/Source/ThirdParty/ANGLE/tools/flex-bison/third_party/.gitattributes</a></li>
<li><a href="#branchessafari610111branchSourceThirdPartyANGLEtoolsflexbisonthird_partym4sugarLICENSE">branches/safari-610.1.11-branch/Source/ThirdParty/ANGLE/tools/flex-bison/third_party/m4sugar/LICENSE</a></li>
<li><a href="#branchessafari610111branchSourceThirdPartyANGLEtoolsflexbisonthird_partym4sugarREADMEchromium">branches/safari-610.1.11-branch/Source/ThirdParty/ANGLE/tools/flex-bison/third_party/m4sugar/README.chromium</a></li>
<li><a href="#branchessafari610111branchSourceThirdPartyANGLEtoolsflexbisonthird_partym4sugarforeachm4">branches/safari-610.1.11-branch/Source/ThirdParty/ANGLE/tools/flex-bison/third_party/m4sugar/foreach.m4</a></li>
<li><a href="#branchessafari610111branchSourceThirdPartyANGLEtoolsflexbisonthird_partym4sugarm4sugarm4">branches/safari-610.1.11-branch/Source/ThirdParty/ANGLE/tools/flex-bison/third_party/m4sugar/m4sugar.m4</a></li>
<li><a href="#branchessafari610111branchSourceThirdPartyANGLEtoolsflexbisonthird_partyskeletonsLICENSE">branches/safari-610.1.11-branch/Source/ThirdParty/ANGLE/tools/flex-bison/third_party/skeletons/LICENSE</a></li>
<li><a href="#branchessafari610111branchSourceThirdPartyANGLEtoolsflexbisonthird_partyskeletonsREADMEchromium">branches/safari-610.1.11-branch/Source/ThirdParty/ANGLE/tools/flex-bison/third_party/skeletons/README.chromium</a></li>
<li><a href="#branchessafari610111branchSourceThirdPartyANGLEtoolsflexbisonthird_partyskeletonsbisonm4">branches/safari-610.1.11-branch/Source/ThirdParty/ANGLE/tools/flex-bison/third_party/skeletons/bison.m4</a></li>
<li><a href="#branchessafari610111branchSourceThirdPartyANGLEtoolsflexbisonthird_partyskeletonsclikem4">branches/safari-610.1.11-branch/Source/ThirdParty/ANGLE/tools/flex-bison/third_party/skeletons/c-like.m4</a></li>
<li><a href="#branchessafari610111branchSourceThirdPartyANGLEtoolsflexbisonthird_partyskeletonscm4">branches/safari-610.1.11-branch/Source/ThirdParty/ANGLE/tools/flex-bison/third_party/skeletons/c.m4</a></li>
<li><a href="#branchessafari610111branchSourceThirdPartyANGLEtoolsflexbisonthird_partyskeletonsyaccc">branches/safari-610.1.11-branch/Source/ThirdParty/ANGLE/tools/flex-bison/third_party/skeletons/yacc.c</a></li>
<li><a href="#branchessafari610111branchSourceThirdPartyANGLEtoolsflexbisonupdate_flex_bison_binariespy">branches/safari-610.1.11-branch/Source/ThirdParty/ANGLE/tools/flex-bison/update_flex_bison_binaries.py</a></li>
<li><a href="#branchessafari610111branchSourceThirdPartyANGLEtoolsflexbisonwindowsbisonexesha1">branches/safari-610.1.11-branch/Source/ThirdParty/ANGLE/tools/flex-bison/windows/bison.exe.sha1</a></li>
<li><a href="#branchessafari610111branchSourceThirdPartyANGLEtoolsflexbisonwindowsflexexesha1">branches/safari-610.1.11-branch/Source/ThirdParty/ANGLE/tools/flex-bison/windows/flex.exe.sha1</a></li>
<li><a href="#branchessafari610111branchSourceThirdPartyANGLEtoolsflexbisonwindowsm4exesha1">branches/safari-610.1.11-branch/Source/ThirdParty/ANGLE/tools/flex-bison/windows/m4.exe.sha1</a></li>
<li><a href="#branchessafari610111branchSourceThirdPartyANGLEtoolsflexbisonwindowsmsys20dllsha1">branches/safari-610.1.11-branch/Source/ThirdParty/ANGLE/tools/flex-bison/windows/msys-2.0.dll.sha1</a></li>
<li><a href="#branchessafari610111branchSourceThirdPartyANGLEtoolsflexbisonwindowsmsysiconv2dllsha1">branches/safari-610.1.11-branch/Source/ThirdParty/ANGLE/tools/flex-bison/windows/msys-iconv-2.dll.sha1</a></li>
<li><a href="#branchessafari610111branchSourceThirdPartyANGLEtoolsflexbisonwindowsmsysintl8dllsha1">branches/safari-610.1.11-branch/Source/ThirdParty/ANGLE/tools/flex-bison/windows/msys-intl-8.dll.sha1</a></li>
<li><a href="#branchessafari610111branchSourceThirdPartyANGLEutilframe_capture_utilsh">branches/safari-610.1.11-branch/Source/ThirdParty/ANGLE/util/frame_capture_utils.h</a></li>
</ul>

</div>
<div id="patch">
<h3>Diff</h3>
<a id="branchessafari610111branchSourceThirdPartyANGLEgitignore"></a>
<div class="modfile"><h4>Modified: branches/safari-610.1.11-branch/Source/ThirdParty/ANGLE/.gitignore (260478 => 260479)</h4>
<pre class="diff"><span>
<span class="info">--- branches/safari-610.1.11-branch/Source/ThirdParty/ANGLE/.gitignore       2020-04-22 00:51:48 UTC (rev 260478)
+++ branches/safari-610.1.11-branch/Source/ThirdParty/ANGLE/.gitignore  2020-04-22 00:56:30 UTC (rev 260479)
</span><span class="lines">@@ -1,5 +1,4 @@
</span><span class="cx"> .vs
</span><del>-.vscode
</del><span class="cx"> *.Makefile
</span><span class="cx"> *.ncb
</span><span class="cx"> *.nvuser
</span></span></pre></div>
<a id="branchessafari610111branchSourceThirdPartyANGLEANGLEplist"></a>
<div class="modfile"><h4>Modified: branches/safari-610.1.11-branch/Source/ThirdParty/ANGLE/ANGLE.plist (260478 => 260479)</h4>
<pre class="diff"><span>
<span class="info">--- branches/safari-610.1.11-branch/Source/ThirdParty/ANGLE/ANGLE.plist      2020-04-22 00:51:48 UTC (rev 260478)
+++ branches/safari-610.1.11-branch/Source/ThirdParty/ANGLE/ANGLE.plist 2020-04-22 00:56:30 UTC (rev 260479)
</span><span class="lines">@@ -6,13 +6,13 @@
</span><span class="cx">          <key>OpenSourceProject</key>
</span><span class="cx">          <string>ANGLE</string>
</span><span class="cx">          <key>OpenSourceVersion</key>
</span><del>-               <string>b387ce9389ede6a4ed3b831ab1b8187927fa295f</string>
</del><ins>+                <string>aa6dd50de0c5253d56caf37b9691dd61a5f670fd</string>
</ins><span class="cx">           <key>OpenSourceWebsiteURL</key>
</span><span class="cx">          <string>http://code.google.com/p/angleproject/</string>
</span><span class="cx">          <key>OpenSourceSCM</key>
</span><del>-               <string>git clone https://chromium.googlesource.com/angle/angle &amp;&amp; cd angle &amp;&amp; git checkout b387ce9389ede6a4ed3b831ab1b8187927fa295f</string>
</del><ins>+                <string>git clone https://chromium.googlesource.com/angle/angle &amp;&amp; cd angle &amp;&amp; git checkout aa6dd50de0c5253d56caf37b9691dd61a5f670fd</string>
</ins><span class="cx">           <key>OpenSourceImportDate</key>
</span><del>-               <string>2020-03-27</string>
</del><ins>+                <string>2020-02-03</string>
</ins><span class="cx">           <key>OpenSourceLicense</key>
</span><span class="cx">          <string>BSD</string>
</span><span class="cx">          <key>OpenSourceLicenseFile</key>
</span></span></pre></div>
<a id="branchessafari610111branchSourceThirdPartyANGLEANGLExcodeprojprojectpbxproj"></a>
<div class="modfile"><h4>Modified: branches/safari-610.1.11-branch/Source/ThirdParty/ANGLE/ANGLE.xcodeproj/project.pbxproj (260478 => 260479)</h4>
<pre class="diff"><span>
<span class="info">--- branches/safari-610.1.11-branch/Source/ThirdParty/ANGLE/ANGLE.xcodeproj/project.pbxproj  2020-04-22 00:51:48 UTC (rev 260478)
+++ branches/safari-610.1.11-branch/Source/ThirdParty/ANGLE/ANGLE.xcodeproj/project.pbxproj     2020-04-22 00:56:30 UTC (rev 260479)
</span><span class="lines">@@ -424,6 +424,8 @@
</span><span class="cx">          5CB3012A1DE39F1A00D2C405 /* functionsgl_typedefs.h in Headers */ = {isa = PBXBuildFile; fileRef = 5CB300F61DE39F1A00D2C405 /* functionsgl_typedefs.h */; };
</span><span class="cx">          5CB3012B1DE39F1A00D2C405 /* FunctionsGL.cpp in Sources */ = {isa = PBXBuildFile; fileRef = 5CB300F71DE39F1A00D2C405 /* FunctionsGL.cpp */; };
</span><span class="cx">          5CB3012C1DE39F1A00D2C405 /* FunctionsGL.h in Headers */ = {isa = PBXBuildFile; fileRef = 5CB300F81DE39F1A00D2C405 /* FunctionsGL.h */; };
</span><ins>+               5CB3012D1DE39F1A00D2C405 /* PathGL.cpp in Sources */ = {isa = PBXBuildFile; fileRef = 5CB300FA1DE39F1A00D2C405 /* PathGL.cpp */; };
+               5CB3012E1DE39F1A00D2C405 /* PathGL.h in Headers */ = {isa = PBXBuildFile; fileRef = 5CB300FB1DE39F1A00D2C405 /* PathGL.h */; };
</ins><span class="cx">           5CB3012F1DE39F1A00D2C405 /* ProgramGL.cpp in Sources */ = {isa = PBXBuildFile; fileRef = 5CB300FC1DE39F1A00D2C405 /* ProgramGL.cpp */; };
</span><span class="cx">          5CB301301DE39F1A00D2C405 /* ProgramGL.h in Headers */ = {isa = PBXBuildFile; fileRef = 5CB300FD1DE39F1A00D2C405 /* ProgramGL.h */; };
</span><span class="cx">          5CB301311DE39F1A00D2C405 /* QueryGL.cpp in Sources */ = {isa = PBXBuildFile; fileRef = 5CB300FE1DE39F1A00D2C405 /* QueryGL.cpp */; };
</span><span class="lines">@@ -549,10 +551,14 @@
</span><span class="cx">          5CCD599C2284FC750018F2D8 /* SystemInfo.h in Headers */ = {isa = PBXBuildFile; fileRef = 5CCD59992284FC750018F2D8 /* SystemInfo.h */; };
</span><span class="cx">          5CCD81721DBFE999006066B8 /* Debug.cpp in Sources */ = {isa = PBXBuildFile; fileRef = 5CCD815A1DBFE999006066B8 /* Debug.cpp */; };
</span><span class="cx">          5CCD81731DBFE999006066B8 /* Debug.h in Headers */ = {isa = PBXBuildFile; fileRef = 5CCD815B1DBFE999006066B8 /* Debug.h */; };
</span><ins>+               5CCD81741DBFE999006066B8 /* HandleRangeAllocator.cpp in Sources */ = {isa = PBXBuildFile; fileRef = 5CCD815C1DBFE999006066B8 /* HandleRangeAllocator.cpp */; };
+               5CCD81751DBFE999006066B8 /* HandleRangeAllocator.h in Headers */ = {isa = PBXBuildFile; fileRef = 5CCD815D1DBFE999006066B8 /* HandleRangeAllocator.h */; };
</ins><span class="cx">           5CCD81761DBFE999006066B8 /* Image.cpp in Sources */ = {isa = PBXBuildFile; fileRef = 5CCD815E1DBFE999006066B8 /* Image.cpp */; };
</span><span class="cx">          5CCD81771DBFE999006066B8 /* Image.h in Headers */ = {isa = PBXBuildFile; fileRef = 5CCD815F1DBFE999006066B8 /* Image.h */; };
</span><span class="cx">          5CCD81781DBFE999006066B8 /* IndexRangeCache.cpp in Sources */ = {isa = PBXBuildFile; fileRef = 5CCD81601DBFE999006066B8 /* IndexRangeCache.cpp */; };
</span><span class="cx">          5CCD81791DBFE999006066B8 /* IndexRangeCache.h in Headers */ = {isa = PBXBuildFile; fileRef = 5CCD81611DBFE999006066B8 /* IndexRangeCache.h */; };
</span><ins>+               5CCD817A1DBFE999006066B8 /* Path.cpp in Sources */ = {isa = PBXBuildFile; fileRef = 5CCD81621DBFE999006066B8 /* Path.cpp */; };
+               5CCD817B1DBFE999006066B8 /* Path.h in Headers */ = {isa = PBXBuildFile; fileRef = 5CCD81631DBFE999006066B8 /* Path.h */; };
</ins><span class="cx">           5CCD817C1DBFE999006066B8 /* queryutils.cpp in Sources */ = {isa = PBXBuildFile; fileRef = 5CCD81641DBFE999006066B8 /* queryutils.cpp */; };
</span><span class="cx">          5CCD817D1DBFE999006066B8 /* queryutils.h in Headers */ = {isa = PBXBuildFile; fileRef = 5CCD81651DBFE999006066B8 /* queryutils.h */; };
</span><span class="cx">          5CCD81801DBFE999006066B8 /* Stream.cpp in Sources */ = {isa = PBXBuildFile; fileRef = 5CCD81681DBFE999006066B8 /* Stream.cpp */; };
</span><span class="lines">@@ -575,11 +581,6 @@
</span><span class="cx">          6ED70A0D22CD630E008688CE /* glext.h in Headers */ = {isa = PBXBuildFile; fileRef = 6ED70A0A22CD630E008688CE /* glext.h */; settings = {ATTRIBUTES = (Public, ); }; };
</span><span class="cx">          6ED70A0E22CD630E008688CE /* glplatform.h in Headers */ = {isa = PBXBuildFile; fileRef = 6ED70A0B22CD630E008688CE /* glplatform.h */; settings = {ATTRIBUTES = (Public, ); }; };
</span><span class="cx">          6ED70A1022CD6822008688CE /* glext_angle.h in Headers */ = {isa = PBXBuildFile; fileRef = 6ED70A0F22CD6822008688CE /* glext_angle.h */; settings = {ATTRIBUTES = (Public, ); }; };
</span><del>-               6ED7BDF02432CCC400E01503 /* RemoveAtomicCounterBuiltins.cpp in Sources */ = {isa = PBXBuildFile; fileRef = 6ED7BDEE2432CCC300E01503 /* RemoveAtomicCounterBuiltins.cpp */; };
-               6ED7BDF12432CCC400E01503 /* RemoveAtomicCounterBuiltins.h in Headers */ = {isa = PBXBuildFile; fileRef = 6ED7BDEF2432CCC300E01503 /* RemoveAtomicCounterBuiltins.h */; };
-               6ED7BDF32432CD1B00E01503 /* InfoLog.h in Headers */ = {isa = PBXBuildFile; fileRef = 6ED7BDF22432CD1B00E01503 /* InfoLog.h */; };
-               6ED7BDF62432CD6200E01503 /* ProgramExecutable.cpp in Sources */ = {isa = PBXBuildFile; fileRef = 6ED7BDF42432CD6200E01503 /* ProgramExecutable.cpp */; };
-               6ED7BDF72432CD6200E01503 /* ProgramExecutable.h in Headers */ = {isa = PBXBuildFile; fileRef = 6ED7BDF52432CD6200E01503 /* ProgramExecutable.h */; };
</del><span class="cx">           6EE2FD2D22BAE99C001D369E /* eglext_angle.h in Headers */ = {isa = PBXBuildFile; fileRef = 6EE2FD2C22BAE99C001D369E /* eglext_angle.h */; settings = {ATTRIBUTES = (Public, ); }; };
</span><span class="cx">          6EE2FD2F22BAE9CD001D369E /* gl2ext_angle.h in Headers */ = {isa = PBXBuildFile; fileRef = 6EE2FD2E22BAE9CD001D369E /* gl2ext_angle.h */; settings = {ATTRIBUTES = (Public, ); }; };
</span><span class="cx">          A08C3CDC16D6CB61003F0B83 /* ArrayBoundsClamper.cpp in Sources */ = {isa = PBXBuildFile; fileRef = A08C3CDA16D6CB61003F0B83 /* ArrayBoundsClamper.cpp */; };
</span><span class="lines">@@ -1196,6 +1197,8 @@
</span><span class="cx">          5CB300F61DE39F1A00D2C405 /* functionsgl_typedefs.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = functionsgl_typedefs.h; sourceTree = "<group>"; };
</span><span class="cx">          5CB300F71DE39F1A00D2C405 /* FunctionsGL.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; path = FunctionsGL.cpp; sourceTree = "<group>"; };
</span><span class="cx">          5CB300F81DE39F1A00D2C405 /* FunctionsGL.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = FunctionsGL.h; sourceTree = "<group>"; };
</span><ins>+               5CB300FA1DE39F1A00D2C405 /* PathGL.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; path = PathGL.cpp; sourceTree = "<group>"; };
+               5CB300FB1DE39F1A00D2C405 /* PathGL.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = PathGL.h; sourceTree = "<group>"; };
</ins><span class="cx">           5CB300FC1DE39F1A00D2C405 /* ProgramGL.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; path = ProgramGL.cpp; sourceTree = "<group>"; };
</span><span class="cx">          5CB300FD1DE39F1A00D2C405 /* ProgramGL.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = ProgramGL.h; sourceTree = "<group>"; };
</span><span class="cx">          5CB300FE1DE39F1A00D2C405 /* QueryGL.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; path = QueryGL.cpp; sourceTree = "<group>"; };
</span><span class="lines">@@ -1317,10 +1320,14 @@
</span><span class="cx">          5CCD59992284FC750018F2D8 /* SystemInfo.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = SystemInfo.h; sourceTree = "<group>"; };
</span><span class="cx">          5CCD815A1DBFE999006066B8 /* Debug.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; path = Debug.cpp; sourceTree = "<group>"; };
</span><span class="cx">          5CCD815B1DBFE999006066B8 /* Debug.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = Debug.h; sourceTree = "<group>"; };
</span><ins>+               5CCD815C1DBFE999006066B8 /* HandleRangeAllocator.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; path = HandleRangeAllocator.cpp; sourceTree = "<group>"; };
+               5CCD815D1DBFE999006066B8 /* HandleRangeAllocator.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = HandleRangeAllocator.h; sourceTree = "<group>"; };
</ins><span class="cx">           5CCD815E1DBFE999006066B8 /* Image.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; path = Image.cpp; sourceTree = "<group>"; };
</span><span class="cx">          5CCD815F1DBFE999006066B8 /* Image.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = Image.h; sourceTree = "<group>"; };
</span><span class="cx">          5CCD81601DBFE999006066B8 /* IndexRangeCache.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; path = IndexRangeCache.cpp; sourceTree = "<group>"; };
</span><span class="cx">          5CCD81611DBFE999006066B8 /* IndexRangeCache.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = IndexRangeCache.h; sourceTree = "<group>"; };
</span><ins>+               5CCD81621DBFE999006066B8 /* Path.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; path = Path.cpp; sourceTree = "<group>"; };
+               5CCD81631DBFE999006066B8 /* Path.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = Path.h; sourceTree = "<group>"; };
</ins><span class="cx">           5CCD81641DBFE999006066B8 /* queryutils.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; path = queryutils.cpp; sourceTree = "<group>"; };
</span><span class="cx">          5CCD81651DBFE999006066B8 /* queryutils.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = queryutils.h; sourceTree = "<group>"; };
</span><span class="cx">          5CCD81681DBFE999006066B8 /* Stream.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; path = Stream.cpp; sourceTree = "<group>"; };
</span><span class="lines">@@ -1346,11 +1353,6 @@
</span><span class="cx">          6ED70A0A22CD630E008688CE /* glext.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; name = glext.h; path = include/GLES/glext.h; sourceTree = "<group>"; };
</span><span class="cx">          6ED70A0B22CD630E008688CE /* glplatform.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; name = glplatform.h; path = include/GLES/glplatform.h; sourceTree = "<group>"; };
</span><span class="cx">          6ED70A0F22CD6822008688CE /* glext_angle.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; name = glext_angle.h; path = include/GLES/glext_angle.h; sourceTree = "<group>"; };
</span><del>-               6ED7BDEE2432CCC300E01503 /* RemoveAtomicCounterBuiltins.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; path = RemoveAtomicCounterBuiltins.cpp; sourceTree = "<group>"; };
-               6ED7BDEF2432CCC300E01503 /* RemoveAtomicCounterBuiltins.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = RemoveAtomicCounterBuiltins.h; sourceTree = "<group>"; };
-               6ED7BDF22432CD1B00E01503 /* InfoLog.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = InfoLog.h; sourceTree = "<group>"; };
-               6ED7BDF42432CD6200E01503 /* ProgramExecutable.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; path = ProgramExecutable.cpp; sourceTree = "<group>"; };
-               6ED7BDF52432CD6200E01503 /* ProgramExecutable.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = ProgramExecutable.h; sourceTree = "<group>"; };
</del><span class="cx">           6EE2FD2C22BAE99C001D369E /* eglext_angle.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; name = eglext_angle.h; path = include/EGL/eglext_angle.h; sourceTree = "<group>"; };
</span><span class="cx">          6EE2FD2E22BAE9CD001D369E /* gl2ext_angle.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; name = gl2ext_angle.h; path = include/GLES2/gl2ext_angle.h; sourceTree = "<group>"; };
</span><span class="cx">          A08C3CDA16D6CB61003F0B83 /* ArrayBoundsClamper.cpp */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.cpp.cpp; name = ArrayBoundsClamper.cpp; path = compiler/ArrayBoundsClamper.cpp; sourceTree = "<group>"; };
</span><span class="lines">@@ -1847,6 +1849,8 @@
</span><span class="cx">                          5CCD59542284F7950018F2D8 /* GLES1State.h */,
</span><span class="cx">                          5C1DBC6F1B0438D200235552 /* HandleAllocator.cpp */,
</span><span class="cx">                          5C1DBC701B0438D200235552 /* HandleAllocator.h */,
</span><ins>+                               5CCD815C1DBFE999006066B8 /* HandleRangeAllocator.cpp */,
+                               5CCD815D1DBFE999006066B8 /* HandleRangeAllocator.h */,
</ins><span class="cx">                           5C1DBC711B0438D200235552 /* histogram_macros.h */,
</span><span class="cx">                          5CCD815E1DBFE999006066B8 /* Image.cpp */,
</span><span class="cx">                          5CCD815F1DBFE999006066B8 /* Image.h */,
</span><span class="lines">@@ -1854,7 +1858,6 @@
</span><span class="cx">                          5C1DBC731B0438D200235552 /* ImageIndex.h */,
</span><span class="cx">                          5CCD81601DBFE999006066B8 /* IndexRangeCache.cpp */,
</span><span class="cx">                          5CCD81611DBFE999006066B8 /* IndexRangeCache.h */,
</span><del>-                               6ED7BDF22432CD1B00E01503 /* InfoLog.h */,
</del><span class="cx">                           315EBDD11FCE452800AC7A89 /* LoggingAnnotator.cpp */,
</span><span class="cx">                          315EBDDA1FCE452B00AC7A89 /* LoggingAnnotator.h */,
</span><span class="cx">                          5CCD59562284F7950018F2D8 /* MemoryObject.cpp */,
</span><span class="lines">@@ -1870,11 +1873,11 @@
</span><span class="cx">                          A315988323299037000619B9 /* Overlay_font_autogen.h */,
</span><span class="cx">                          A315988523299037000619B9 /* OverlayWidgets.cpp */,
</span><span class="cx">                          A315988723299037000619B9 /* OverlayWidgets.h */,
</span><ins>+                               5CCD81621DBFE999006066B8 /* Path.cpp */,
+                               5CCD81631DBFE999006066B8 /* Path.h */,
</ins><span class="cx">                           5C1DBC751B0438D200235552 /* Platform.cpp */,
</span><span class="cx">                          5C1DBC761B0438D200235552 /* Program.cpp */,
</span><span class="cx">                          5C1DBC771B0438D200235552 /* Program.h */,
</span><del>-                               6ED7BDF42432CD6200E01503 /* ProgramExecutable.cpp */,
-                               6ED7BDF52432CD6200E01503 /* ProgramExecutable.h */,
</del><span class="cx">                           315EBDD51FCE452900AC7A89 /* ProgramLinkedResources.cpp */,
</span><span class="cx">                          315EBDCF1FCE452700AC7A89 /* ProgramLinkedResources.h */,
</span><span class="cx">                          315EBDCE1FCE452700AC7A89 /* ProgramPipeline.cpp */,
</span><span class="lines">@@ -2144,6 +2147,8 @@
</span><span class="cx">                          A30307862305F8F0002DA972 /* MemoryObjectGL.h */,
</span><span class="cx">                          315EBDB51FCE44BE00AC7A89 /* null_functions.cpp */,
</span><span class="cx">                          315EBDB81FCE44BF00AC7A89 /* null_functions.h */,
</span><ins>+                               5CB300FA1DE39F1A00D2C405 /* PathGL.cpp */,
+                               5CB300FB1DE39F1A00D2C405 /* PathGL.h */,
</ins><span class="cx">                           5CB300FC1DE39F1A00D2C405 /* ProgramGL.cpp */,
</span><span class="cx">                          5CB300FD1DE39F1A00D2C405 /* ProgramGL.h */,
</span><span class="cx">                          315EBDB01FCE44BD00AC7A89 /* ProgramPipelineGL.cpp */,
</span><span class="lines">@@ -2252,8 +2257,6 @@
</span><span class="cx">                          5C55D60022826B8F00B5BA2C /* RegenerateStructNames.h */,
</span><span class="cx">                          5C55D5FA22826B8F00B5BA2C /* RemoveArrayLengthMethod.cpp */,
</span><span class="cx">                          5C55D63E22826B9C00B5BA2C /* RemoveArrayLengthMethod.h */,
</span><del>-                               6ED7BDEE2432CCC300E01503 /* RemoveAtomicCounterBuiltins.cpp */,
-                               6ED7BDEF2432CCC300E01503 /* RemoveAtomicCounterBuiltins.h */,
</del><span class="cx">                           5C55D60922826B9000B5BA2C /* RemoveDynamicIndexing.cpp */,
</span><span class="cx">                          5C55D62F22826B9800B5BA2C /* RemoveDynamicIndexing.h */,
</span><span class="cx">                          A3D3291223CFCB7600375657 /* RemoveInactiveInterfaceVariables.cpp */,
</span><span class="lines">@@ -2715,6 +2718,7 @@
</span><span class="cx">                          31012E2D18B97B9B0039062F /* glslang.h in Headers */,
</span><span class="cx">                          A3D3290C23CFCB4D00375657 /* glslang_tab_autogen.h in Headers */,
</span><span class="cx">                          5C1DBDF91B0438D300235552 /* HandleAllocator.h in Headers */,
</span><ins>+                               5CCD81751DBFE999006066B8 /* HandleRangeAllocator.h in Headers */,
</ins><span class="cx">                           5C55D72C2282747700B5BA2C /* hash_utils.h in Headers */,
</span><span class="cx">                          31012E3318B97B9B0039062F /* HashNames.h in Headers */,
</span><span class="cx">                          5C1DBDFA1B0438D300235552 /* histogram_macros.h in Headers */,
</span><span class="lines">@@ -2728,7 +2732,6 @@
</span><span class="cx">                          5C55D6E222826C7900B5BA2C /* ImmutableString.h in Headers */,
</span><span class="cx">                          5C55D6E522826C7900B5BA2C /* ImmutableStringBuilder.h in Headers */,
</span><span class="cx">                          5CCD81791DBFE999006066B8 /* IndexRangeCache.h in Headers */,
</span><del>-                               6ED7BDF32432CD1B00E01503 /* InfoLog.h in Headers */,
</del><span class="cx">                           31012E3518B97B9B0039062F /* InfoSink.h in Headers */,
</span><span class="cx">                          31012E3718B97B9B0039062F /* Initialize.h in Headers */,
</span><span class="cx">                          31012E3918B97B9B0039062F /* InitializeDll.h in Headers */,
</span><span class="lines">@@ -2777,6 +2780,8 @@
</span><span class="cx">                          5C55D72A2282747700B5BA2C /* PackedEnums.h in Headers */,
</span><span class="cx">                          5C55D7292282747700B5BA2C /* PackedGLEnums_autogen.h in Headers */,
</span><span class="cx">                          31012E5518B97B9B0039062F /* ParseContext.h in Headers */,
</span><ins>+                               5CCD817B1DBFE999006066B8 /* Path.h in Headers */,
+                               5CB3012E1DE39F1A00D2C405 /* PathGL.h in Headers */,
</ins><span class="cx">                           5CB304F11DE4164800D2C405 /* PathImpl.h in Headers */,
</span><span class="cx">                          5CB301511DE39F4700D2C405 /* PbufferSurfaceCGL.h in Headers */,
</span><span class="cx">                          313BCE5D2361133A00FC39E5 /* PbufferSurfaceEAGL.h in Headers */,
</span><span class="lines">@@ -2788,7 +2793,6 @@
</span><span class="cx">                          A264F8BF16974DED006FAA5A /* Preprocessor.h in Headers */,
</span><span class="cx">                          A30307942305F959002DA972 /* proc_table_egl.h in Headers */,
</span><span class="cx">                          5C1DBE001B0438D300235552 /* Program.h in Headers */,
</span><del>-                               6ED7BDF72432CD6200E01503 /* ProgramExecutable.h in Headers */,
</del><span class="cx">                           5CB301301DE39F1A00D2C405 /* ProgramGL.h in Headers */,
</span><span class="cx">                          5CB304F31DE4164800D2C405 /* ProgramImpl.h in Headers */,
</span><span class="cx">                          5CB304F21DE4164800D2C405 /* ProgramImpl_mock.h in Headers */,
</span><span class="lines">@@ -2808,7 +2812,6 @@
</span><span class="cx">                          5C1DBE061B0438D300235552 /* RefCountObject.h in Headers */,
</span><span class="cx">                          5C55D65C22826B9F00B5BA2C /* RegenerateStructNames.h in Headers */,
</span><span class="cx">                          5C55D69A22826B9F00B5BA2C /* RemoveArrayLengthMethod.h in Headers */,
</span><del>-                               6ED7BDF12432CCC400E01503 /* RemoveAtomicCounterBuiltins.h in Headers */,
</del><span class="cx">                           5C55D68B22826B9F00B5BA2C /* RemoveDynamicIndexing.h in Headers */,
</span><span class="cx">                          A3D3291923CFCB7700375657 /* RemoveInactiveInterfaceVariables.h in Headers */,
</span><span class="cx">                          5C55D64D22826B9F00B5BA2C /* RemoveInvariantDeclaration.h in Headers */,
</span><span class="lines">@@ -3159,6 +3162,7 @@
</span><span class="cx">                          A3D3290D23CFCB4D00375657 /* glslang_lex_autogen.cpp in Sources */,
</span><span class="cx">                          A3D3290B23CFCB4D00375657 /* glslang_tab_autogen.cpp in Sources */,
</span><span class="cx">                          5C1DBDF81B0438D300235552 /* HandleAllocator.cpp in Sources */,
</span><ins>+                               5CCD81741DBFE999006066B8 /* HandleRangeAllocator.cpp in Sources */,
</ins><span class="cx">                           315EBD861FCE443600AC7A89 /* HashNames.cpp in Sources */,
</span><span class="cx">                          5CCD81761DBFE999006066B8 /* Image.cpp in Sources */,
</span><span class="cx">                          5CCD59912284FC400018F2D8 /* imageformats.cpp in Sources */,
</span><span class="lines">@@ -3210,6 +3214,8 @@
</span><span class="cx">                          5C55D72D2282747700B5BA2C /* PackedEnums.cpp in Sources */,
</span><span class="cx">                          5C55D72E2282747700B5BA2C /* PackedGLEnums_autogen.cpp in Sources */,
</span><span class="cx">                          31012E5418B97B9B0039062F /* ParseContext.cpp in Sources */,
</span><ins>+                               5CCD817A1DBFE999006066B8 /* Path.cpp in Sources */,
+                               5CB3012D1DE39F1A00D2C405 /* PathGL.cpp in Sources */,
</ins><span class="cx">                           5CCD596F2284F9550018F2D8 /* PbufferSurfaceCGL.cpp in Sources */,
</span><span class="cx">                          313BCE562361133A00FC39E5 /* PbufferSurfaceEAGL.cpp in Sources */,
</span><span class="cx">                          5C1DBDFE1B0438D300235552 /* Platform.cpp in Sources */,
</span><span class="lines">@@ -3221,7 +3227,6 @@
</span><span class="cx">                          A3D3290723CFC88700375657 /* preprocessor_tab_autogen.cpp in Sources */,
</span><span class="cx">                          A30307952305F959002DA972 /* proc_table_egl_autogen.cpp in Sources */,
</span><span class="cx">                          5C1DBDFF1B0438D300235552 /* Program.cpp in Sources */,
</span><del>-                               6ED7BDF62432CD6200E01503 /* ProgramExecutable.cpp in Sources */,
</del><span class="cx">                           5CB3012F1DE39F1A00D2C405 /* ProgramGL.cpp in Sources */,
</span><span class="cx">                          315EBDEC1FCE452D00AC7A89 /* ProgramLinkedResources.cpp in Sources */,
</span><span class="cx">                          315EBDE51FCE452D00AC7A89 /* ProgramPipeline.cpp in Sources */,
</span><span class="lines">@@ -3237,7 +3242,6 @@
</span><span class="cx">                          5C55D6B922826BC800B5BA2C /* RecordConstantPrecision.cpp in Sources */,
</span><span class="cx">                          5C55D6BA22826BC800B5BA2C /* RegenerateStructNames.cpp in Sources */,
</span><span class="cx">                          5C55D6BB22826BC800B5BA2C /* RemoveArrayLengthMethod.cpp in Sources */,
</span><del>-                               6ED7BDF02432CCC400E01503 /* RemoveAtomicCounterBuiltins.cpp in Sources */,
</del><span class="cx">                           5C55D6BC22826BC800B5BA2C /* RemoveDynamicIndexing.cpp in Sources */,
</span><span class="cx">                          A3D3291823CFCB7700375657 /* RemoveInactiveInterfaceVariables.cpp in Sources */,
</span><span class="cx">                          5C55D6BD22826BC800B5BA2C /* RemoveInvariantDeclaration.cpp in Sources */,
</span></span></pre></div>
<a id="branchessafari610111branchSourceThirdPartyANGLEAUTHORS"></a>
<div class="modfile"><h4>Modified: branches/safari-610.1.11-branch/Source/ThirdParty/ANGLE/AUTHORS (260478 => 260479)</h4>
<pre class="diff"><span>
<span class="info">--- branches/safari-610.1.11-branch/Source/ThirdParty/ANGLE/AUTHORS  2020-04-22 00:51:48 UTC (rev 260478)
+++ branches/safari-610.1.11-branch/Source/ThirdParty/ANGLE/AUTHORS     2020-04-22 00:56:30 UTC (rev 260479)
</span><span class="lines">@@ -34,7 +34,6 @@
</span><span class="cx"> Arm Ltd.
</span><span class="cx"> Broadcom Inc.
</span><span class="cx"> Facebook, Inc.
</span><del>-The Khronos Group, Inc.
</del><span class="cx"> 
</span><span class="cx"> Jacek Caban
</span><span class="cx"> Mark Callow
</span></span></pre></div>
<a id="branchessafari610111branchSourceThirdPartyANGLEBUILDgn"></a>
<div class="modfile"><h4>Modified: branches/safari-610.1.11-branch/Source/ThirdParty/ANGLE/BUILD.gn (260478 => 260479)</h4>
<pre class="diff"><span>
<span class="info">--- branches/safari-610.1.11-branch/Source/ThirdParty/ANGLE/BUILD.gn 2020-04-22 00:51:48 UTC (rev 260478)
+++ branches/safari-610.1.11-branch/Source/ThirdParty/ANGLE/BUILD.gn    2020-04-22 00:56:30 UTC (rev 260479)
</span><span class="lines">@@ -32,9 +32,6 @@
</span><span class="cx">   # Don't build extra (test, samples etc) for Windows UWP. We don't have
</span><span class="cx">   # infrastructure (e.g. windowing helper functions) in place to run them.
</span><span class="cx">   angle_build_all = !build_with_chromium && !angle_is_winuwp && angle_has_build
</span><del>-
-  # Enable generating current commit information using git
-  angle_enable_commit_id = true
</del><span class="cx"> }
</span><span class="cx"> 
</span><span class="cx"> if (angle_build_all) {
</span><span class="lines">@@ -57,6 +54,15 @@
</span><span class="cx">   }
</span><span class="cx"> }
</span><span class="cx"> 
</span><ins>+angle_git_is_present = exec_script("src/commit_id.py",
+                                   [
+                                     "check",
+                                     rebase_path(".", root_build_dir),
+                                   ],
+                                   "value")
+
+angle_use_commit_id = angle_git_is_present == 1
+
</ins><span class="cx"> import("src/compiler.gni")
</span><span class="cx"> import("src/libGLESv2.gni")
</span><span class="cx"> 
</span><span class="lines">@@ -191,13 +197,17 @@
</span><span class="cx">       exec_script("scripts/file_exists.py", [ _old_compiler ], "value")
</span><span class="cx"> 
</span><span class="cx">   copy("copy_compiler_dll") {
</span><del>-    sources = [ "$windows_sdk_path/Redist/D3D/$target_cpu/d3dcompiler_47.dll" ]
</del><ins>+    sources = [
+      "$windows_sdk_path/Redist/D3D/$target_cpu/d3dcompiler_47.dll",
+    ]
</ins><span class="cx"> 
</span><span class="cx">     if (_has_old_compiler) {
</span><span class="cx">       sources += [ _old_compiler ]
</span><span class="cx">     }
</span><span class="cx"> 
</span><del>-    outputs = [ "$root_out_dir/{{source_file_part}}" ]
</del><ins>+    outputs = [
+      "$root_out_dir/{{source_file_part}}",
+    ]
</ins><span class="cx">   }
</span><span class="cx"> }
</span><span class="cx"> 
</span><span class="lines">@@ -253,8 +263,12 @@
</span><span class="cx"> 
</span><span class="cx"> if (angle_has_build) {
</span><span class="cx">   fuzzer_test("xxhash_fuzzer") {
</span><del>-    sources = [ "src/common/third_party/xxhash/xxhash_fuzzer.cpp" ]
-    deps = [ ":xxhash" ]
</del><ins>+    sources = [
+      "src/common/third_party/xxhash/xxhash_fuzzer.cpp",
+    ]
+    deps = [
+      ":xxhash",
+    ]
</ins><span class="cx">   }
</span><span class="cx"> }
</span><span class="cx"> 
</span><span class="lines">@@ -266,7 +280,9 @@
</span><span class="cx">     ":debug_annotations_config",
</span><span class="cx">   ]
</span><span class="cx"> 
</span><del>-  deps = [ ":xxhash" ]
</del><ins>+  deps = [
+    ":xxhash",
+  ]
</ins><span class="cx"> 
</span><span class="cx">   public_deps = [
</span><span class="cx">     ":angle_system_utils",
</span><span class="lines">@@ -288,13 +304,17 @@
</span><span class="cx"> 
</span><span class="cx"> angle_source_set("angle_image_util_headers") {
</span><span class="cx">   sources = libangle_image_util_headers
</span><del>-  public_deps = [ ":angle_common" ]
</del><ins>+  public_deps = [
+    ":angle_common",
+  ]
</ins><span class="cx"> }
</span><span class="cx"> 
</span><span class="cx"> angle_static_library("angle_image_util") {
</span><span class="cx">   sources = libangle_image_util_sources
</span><span class="cx">   public_configs += [ ":angle_image_util_config" ]
</span><del>-  public_deps = [ ":angle_image_util_headers" ]
</del><ins>+  public_deps = [
+    ":angle_image_util_headers",
+  ]
</ins><span class="cx"> }
</span><span class="cx"> 
</span><span class="cx"> config("angle_gl_visibility_config") {
</span><span class="lines">@@ -323,7 +343,9 @@
</span><span class="cx">     ":angle_gpu_info_util_config",
</span><span class="cx">     ":angle_backend_config",
</span><span class="cx">   ]
</span><del>-  public_deps = [ ":angle_common" ]
</del><ins>+  public_deps = [
+    ":angle_common",
+  ]
</ins><span class="cx">   sources = libangle_gpu_info_util_sources
</span><span class="cx">   deps = []
</span><span class="cx">   libs = []
</span><span class="lines">@@ -385,7 +407,9 @@
</span><span class="cx"> 
</span><span class="cx"> angle_source_set("angle_translator_headers") {
</span><span class="cx">   sources = angle_translator_exported_headers
</span><del>-  public_deps = [ ":includes" ]
</del><ins>+  public_deps = [
+    ":includes",
+  ]
</ins><span class="cx"> }
</span><span class="cx"> 
</span><span class="cx"> angle_static_library("translator") {
</span><span class="lines">@@ -445,7 +469,9 @@
</span><span class="cx"> }
</span><span class="cx"> 
</span><span class="cx"> angle_source_set("translator_fuzzer") {
</span><del>-  sources = [ "src/compiler/fuzz/translator_fuzzer.cpp" ]
</del><ins>+  sources = [
+    "src/compiler/fuzz/translator_fuzzer.cpp",
+  ]
</ins><span class="cx"> 
</span><span class="cx">   include_dirs = [
</span><span class="cx">     "include",
</span><span class="lines">@@ -452,7 +478,9 @@
</span><span class="cx">     "src",
</span><span class="cx">   ]
</span><span class="cx"> 
</span><del>-  deps = [ ":translator" ]
</del><ins>+  deps = [
+    ":translator",
+  ]
</ins><span class="cx"> }
</span><span class="cx"> 
</span><span class="cx"> config("commit_id_config") {
</span><span class="lines">@@ -460,29 +488,46 @@
</span><span class="cx">   visibility = [ ":commit_id" ]
</span><span class="cx"> }
</span><span class="cx"> 
</span><del>-commit_id_output_file = "$root_gen_dir/angle/commit.h"
-action("commit_id") {
-  script = "src/commit_id.py"
-  outputs = [ commit_id_output_file ]
</del><ins>+commit_id_output_file = "$root_gen_dir/angle/id/commit.h"
+if (angle_use_commit_id) {
+  action("commit_id") {
+    script = "src/commit_id.py"
+    outputs = [
+      commit_id_output_file,
+    ]
</ins><span class="cx"> 
</span><del>-  # Add git as a dependency if it is available.
-  if (angle_enable_commit_id &&
-      exec_script("src/commit_id.py", [ "check" ], "value") == 1) {
</del><span class="cx">     # commit id should depend on angle's HEAD revision
</span><del>-    inputs = [ ".git/HEAD" ]
-  }
</del><ins>+    inputs = [
+      ".git/HEAD",
+    ]
</ins><span class="cx"> 
</span><del>-  args = [
-    "gen",
-    rebase_path(commit_id_output_file, root_build_dir),
-  ]
</del><ins>+    args = [
+      "gen",
+      rebase_path(".", root_build_dir),
+      rebase_path(commit_id_output_file, root_build_dir),
+    ]
</ins><span class="cx"> 
</span><del>-  public_configs = [ ":commit_id_config" ]
</del><ins>+    public_configs = [ ":commit_id_config" ]
+  }
+} else {
+  copy("commit_id") {
+    sources = [
+      "src/commit.h",
+    ]
+    outputs = [
+      commit_id_output_file,
+    ]
+    public_configs = [ ":commit_id_config" ]
+  }
</ins><span class="cx"> }
</span><span class="cx"> 
</span><span class="cx"> angle_source_set("angle_version") {
</span><del>-  sources = [ "src/common/version.h" ]
-  public_deps = [ ":commit_id" ]
</del><ins>+  sources = [
+    "src/common/version.h",
+  ]
+  public_deps = [
+    ":commit_id",
+  ]
</ins><span class="cx"> }
</span><span class="cx"> 
</span><span class="cx"> config("angle_backend_config") {
</span><span class="lines">@@ -526,8 +571,7 @@
</span><span class="cx">   defines += [ "LIBANGLE_IMPLEMENTATION" ]
</span><span class="cx"> 
</span><span class="cx">   if (is_win) {
</span><del>-    cflags += [ "/wd4530" ]  # C++ exception handler used, but unwind semantics
-                             # are not enabled.
</del><ins>+    cflags += [ "/wd4530" ]  # C++ exception handler used, but unwind semantics are not enabled.
</ins><span class="cx">   }
</span><span class="cx"> 
</span><span class="cx">   if (is_android && (angle_enable_gl || angle_enable_vulkan)) {
</span><span class="lines">@@ -679,14 +723,12 @@
</span><span class="cx">       sources += libangle_gl_egl_dl_sources
</span><span class="cx">       sources += libangle_gl_egl_android_sources
</span><span class="cx">     }
</span><del>-    if (is_linux) {
-      sources += libangle_gl_egl_sources
-      sources += libangle_gl_egl_dl_sources
-    }
</del><span class="cx">     if (ozone_platform_gbm) {
</span><span class="cx">       configs += [ ":libdrm" ]
</span><span class="cx">       defines += [ "ANGLE_USE_OZONE" ]
</span><span class="cx">       deps += [ "//third_party/minigbm" ]
</span><ins>+      sources += libangle_gl_egl_sources
+      sources += libangle_gl_egl_dl_sources
</ins><span class="cx">       sources += libangle_gl_ozone_sources
</span><span class="cx">     }
</span><span class="cx">   }
</span><span class="lines">@@ -712,7 +754,9 @@
</span><span class="cx">   # Windows ARM64 is available since 10.0.16299 so no need to copy
</span><span class="cx">   # d3dcompiler_47.dll because this file is available as inbox.
</span><span class="cx">   if (_use_copy_compiler_dll) {
</span><del>-    data_deps = [ ":copy_compiler_dll" ]
</del><ins>+    data_deps = [
+      ":copy_compiler_dll",
+    ]
</ins><span class="cx">   }
</span><span class="cx"> }
</span><span class="cx"> 
</span><span class="lines">@@ -725,9 +769,13 @@
</span><span class="cx"> }
</span><span class="cx"> 
</span><span class="cx"> angle_source_set("libANGLE") {
</span><del>-  public_deps = [ ":libANGLE_base" ]
</del><ins>+  public_deps = [
+    ":libANGLE_base",
+  ]
</ins><span class="cx">   public_configs = [ ":angle_frame_capture_disabled" ]
</span><del>-  sources = [ "src/libANGLE/FrameCapture_mock.cpp" ]
</del><ins>+  sources = [
+    "src/libANGLE/FrameCapture_mock.cpp",
+  ]
</ins><span class="cx"> 
</span><span class="cx">   # gl_enum_utils defaults included in with_capture build
</span><span class="cx">   deps = []
</span><span class="lines">@@ -737,7 +785,9 @@
</span><span class="cx"> }
</span><span class="cx"> 
</span><span class="cx"> angle_source_set("angle_gl_enum_utils") {
</span><del>-  public_deps = [ ":libANGLE_base" ]
</del><ins>+  public_deps = [
+    ":libANGLE_base",
+  ]
</ins><span class="cx">   sources = [
</span><span class="cx">     "src/libANGLE/gl_enum_utils.cpp",
</span><span class="cx">     "src/libANGLE/gl_enum_utils_autogen.cpp",
</span><span class="lines">@@ -744,21 +794,10 @@
</span><span class="cx">   ]
</span><span class="cx"> }
</span><span class="cx"> 
</span><del>-config("angle_compression_config") {
-  include_dirs = [ "//third_party/zlib/google" ]
-}
-
-group("angle_compression") {
-  public_configs = [
-    ":angle_compression_config",
-    "//third_party/zlib:zlib_config",
</del><ins>+angle_source_set("libANGLE_with_capture") {
+  public_deps = [
+    ":libANGLE_base",
</ins><span class="cx">   ]
</span><del>-  public_deps = [ "//third_party/zlib/google:compression_utils_portable" ]
-}
-
-angle_source_set("libANGLE_with_capture") {
-  public_deps = [ ":libANGLE_base" ]
-  deps = [ ":angle_compression" ]
</del><span class="cx">   public_configs = [ ":angle_frame_capture_enabled" ]
</span><span class="cx">   sources = libangle_capture_sources
</span><span class="cx"> }
</span><span class="lines">@@ -771,16 +810,6 @@
</span><span class="cx">       "-rpath",
</span><span class="cx">       "@executable_path/",
</span><span class="cx">     ]
</span><del>-    if (build_with_chromium) {
-      ldflags += [
-        # Path for loading shared libraries for unbundled binaries.
-        # From //build/config/mac/BUILD.gn, this is only added for
-        # component builds. However, since ANGLE always dynamically
-        # links to libvulkan, it should be re-added for non-component
-        # builds. (anglebug.com/4455)
-        "-Wl,-rpath,@loader_path/.",
-      ]
-    }
</del><span class="cx">   }
</span><span class="cx"> 
</span><span class="cx">   if (angle_is_winuwp) {
</span><span class="lines">@@ -795,17 +824,10 @@
</span><span class="cx"> }
</span><span class="cx"> 
</span><span class="cx"> config("library_name_config") {
</span><del>-  if (is_component_build && is_android) {
-    defines = [
-      "ANGLE_EGL_LIBRARY_NAME=\"libEGL${angle_libs_suffix}.cr\"",
-      "ANGLE_GLESV2_LIBRARY_NAME=\"libGLESv2${angle_libs_suffix}.cr\"",
-    ]
-  } else {
-    defines = [
-      "ANGLE_EGL_LIBRARY_NAME=\"libEGL${angle_libs_suffix}\"",
-      "ANGLE_GLESV2_LIBRARY_NAME=\"libGLESv2${angle_libs_suffix}\"",
-    ]
-  }
</del><ins>+  defines = [
+    "ANGLE_EGL_LIBRARY_NAME=\"libEGL${angle_libs_suffix}\"",
+    "ANGLE_GLESV2_LIBRARY_NAME=\"libGLESv2${angle_libs_suffix}\"",
+  ]
</ins><span class="cx"> }
</span><span class="cx"> 
</span><span class="cx"> # This config controls export definitions on ANGLE API calls.
</span><span class="lines">@@ -844,15 +866,21 @@
</span><span class="cx"> 
</span><span class="cx">     deps = invoker.deps + [ ":includes" ]
</span><span class="cx"> 
</span><del>-    public_deps = [ ":angle_version" ]
</del><ins>+    public_deps = [
+      ":angle_version",
+    ]
</ins><span class="cx">   }
</span><span class="cx"> }
</span><span class="cx"> 
</span><span class="cx"> angle_libGLESv2("libGLESv2") {
</span><span class="cx">   if (angle_with_capture_by_default) {
</span><del>-    deps = [ ":libANGLE_with_capture" ]
</del><ins>+    deps = [
+      ":libANGLE_with_capture",
+    ]
</ins><span class="cx">   } else {
</span><del>-    deps = [ ":libANGLE" ]
</del><ins>+    deps = [
+      ":libANGLE",
+    ]
</ins><span class="cx">   }
</span><span class="cx"> }
</span><span class="cx"> 
</span><span class="lines">@@ -859,10 +887,14 @@
</span><span class="cx"> # Output capture lib when `angle_with_capture_by_default` disabled, vice versa.
</span><span class="cx"> angle_libGLESv2("libGLESv2_capture_complement") {
</span><span class="cx">   if (angle_with_capture_by_default) {
</span><del>-    deps = [ ":libANGLE" ]
</del><ins>+    deps = [
+      ":libANGLE",
+    ]
</ins><span class="cx">     output_name += "_no_capture"
</span><span class="cx">   } else {
</span><del>-    deps = [ ":libANGLE_with_capture" ]
</del><ins>+    deps = [
+      ":libANGLE_with_capture",
+    ]
</ins><span class="cx">     output_name += "_with_capture"
</span><span class="cx">   }
</span><span class="cx"> }
</span><span class="lines">@@ -890,7 +922,9 @@
</span><span class="cx">       ":libANGLE",
</span><span class="cx">     ]
</span><span class="cx"> 
</span><del>-    public_deps = [ ":angle_version" ]
</del><ins>+    public_deps = [
+      ":angle_version",
+    ]
</ins><span class="cx">   }
</span><span class="cx"> }
</span><span class="cx"> 
</span><span class="lines">@@ -898,8 +932,12 @@
</span><span class="cx">   sources = libglesv2_sources
</span><span class="cx">   configs += [ ":debug_annotations_config" ]
</span><span class="cx">   public_configs += [ ":angle_static" ]
</span><del>-  deps = [ ":includes" ]
-  public_deps = [ ":libANGLE" ]
</del><ins>+  deps = [
+    ":includes",
+  ]
+  public_deps = [
+    ":libANGLE",
+  ]
</ins><span class="cx"> }
</span><span class="cx"> 
</span><span class="cx"> angle_shared_library("libGLESv1_CM") {
</span><span class="lines">@@ -945,7 +983,9 @@
</span><span class="cx">     ":gl_prototypes",
</span><span class="cx">   ]
</span><span class="cx"> 
</span><del>-  deps = [ ":includes" ]
</del><ins>+  deps = [
+    ":includes",
+  ]
</ins><span class="cx"> }
</span><span class="cx"> 
</span><span class="cx"> angle_shared_library("libEGL") {
</span><span class="lines">@@ -975,9 +1015,13 @@
</span><span class="cx">     ":libEGL_egl_loader",
</span><span class="cx">   ]
</span><span class="cx"> 
</span><del>-  public_deps = [ ":includes" ]
</del><ins>+  public_deps = [
+    ":includes",
+  ]
</ins><span class="cx"> 
</span><del>-  data_deps = [ ":libGLESv2" ]
</del><ins>+  data_deps = [
+    ":libGLESv2",
+  ]
</ins><span class="cx"> }
</span><span class="cx"> 
</span><span class="cx"> angle_static_library("libEGL_static") {
</span><span class="lines">@@ -1001,9 +1045,13 @@
</span><span class="cx"> angle_executable("angle_shader_translator") {
</span><span class="cx">   testonly = true
</span><span class="cx"> 
</span><del>-  sources = [ "samples/shader_translator/shader_translator.cpp" ]
</del><ins>+  sources = [
+    "samples/shader_translator/shader_translator.cpp",
+  ]
</ins><span class="cx"> 
</span><del>-  deps = [ ":translator" ]
</del><ins>+  deps = [
+    ":translator",
+  ]
</ins><span class="cx"> }
</span><span class="cx"> 
</span><span class="cx"> if (angle_has_build) {
</span><span class="lines">@@ -1077,7 +1125,9 @@
</span><span class="cx">       }
</span><span class="cx">     }
</span><span class="cx"> 
</span><del>-    outputs = [ "$root_out_dir/lib.compressed/{{source_file_part}}" ]
</del><ins>+    outputs = [
+      "$root_out_dir/lib.compressed/{{source_file_part}}",
+    ]
</ins><span class="cx"> 
</span><span class="cx">     android_nm = "${android_tool_prefix}nm"
</span><span class="cx">     android_strip = "${android_tool_prefix}strip"
</span><span class="lines">@@ -1106,14 +1156,16 @@
</span><span class="cx">   }
</span><span class="cx"> 
</span><span class="cx">   group("angle_apks") {
</span><del>-    deps = [ ":angle_chromium_apk" ]
</del><ins>+    deps = [
+      ":angle_chromium_apk",
+    ]
</ins><span class="cx">   }
</span><span class="cx"> }
</span><span class="cx"> 
</span><span class="cx"> group("angle") {
</span><span class="cx">   data_deps = [
</span><del>-    ":libEGL",
</del><span class="cx">     ":libGLESv1_CM",
</span><span class="cx">     ":libGLESv2",
</span><ins>+    ":libEGL",
</ins><span class="cx">   ]
</span><span class="cx"> }
</span></span></pre></div>
<a id="branchessafari610111branchSourceThirdPartyANGLECONTRIBUTORS"></a>
<div class="modfile"><h4>Modified: branches/safari-610.1.11-branch/Source/ThirdParty/ANGLE/CONTRIBUTORS (260478 => 260479)</h4>
<pre class="diff"><span>
<span class="info">--- branches/safari-610.1.11-branch/Source/ThirdParty/ANGLE/CONTRIBUTORS     2020-04-22 00:51:48 UTC (rev 260478)
+++ branches/safari-610.1.11-branch/Source/ThirdParty/ANGLE/CONTRIBUTORS        2020-04-22 00:56:30 UTC (rev 260479)
</span><span class="lines">@@ -162,7 +162,6 @@
</span><span class="cx">  Kyeongmin Kim
</span><span class="cx">  Minkyu Jeong
</span><span class="cx">  Mohan Maiya
</span><del>- Peter Mowry
</del><span class="cx">  Sangwon Park
</span><span class="cx"> 
</span><span class="cx"> Arm Ltd.
</span><span class="lines">@@ -169,10 +168,6 @@
</span><span class="cx">  Fei Yang
</span><span class="cx">  Xinyi He
</span><span class="cx">  Sunny Sun
</span><del>- Xiaoxuan Liu
- Ancheng Qiao
- Amy Liu
- Jian Li
</del><span class="cx"> 
</span><span class="cx"> Broadcom Inc.
</span><span class="cx">  Gary Sweet
</span><span class="lines">@@ -179,6 +174,3 @@
</span><span class="cx"> 
</span><span class="cx"> Facebook, Inc.
</span><span class="cx">  Artem Bolgar
</span><del>-
-The Khronos Group, Inc.
- Alexey Knyazev
</del></span></pre></div>
<a id="branchessafari610111branchSourceThirdPartyANGLEChangeLog"></a>
<div class="modfile"><h4>Modified: branches/safari-610.1.11-branch/Source/ThirdParty/ANGLE/ChangeLog (260478 => 260479)</h4>
<pre class="diff"><span>
<span class="info">--- branches/safari-610.1.11-branch/Source/ThirdParty/ANGLE/ChangeLog        2020-04-22 00:51:48 UTC (rev 260478)
+++ branches/safari-610.1.11-branch/Source/ThirdParty/ANGLE/ChangeLog   2020-04-22 00:56:30 UTC (rev 260479)
</span><span class="lines">@@ -1,3 +1,7 @@
</span><ins>+2020-04-21  Kocsen Chung  <kocsen_chung@apple.com>
+
+        Revert r259589. rdar://problem/62141646
+
</ins><span class="cx"> 2020-04-08  Truitt Savell  <tsavell@apple.com>
</span><span class="cx"> 
</span><span class="cx">         Unreviewed, reverting r259708.
</span></span></pre></div>
<a id="branchessafari610111branchSourceThirdPartyANGLECompilercmake"></a>
<div class="modfile"><h4>Modified: branches/safari-610.1.11-branch/Source/ThirdParty/ANGLE/Compiler.cmake (260478 => 260479)</h4>
<pre class="diff"><span>
<span class="info">--- branches/safari-610.1.11-branch/Source/ThirdParty/ANGLE/Compiler.cmake   2020-04-22 00:51:48 UTC (rev 260478)
+++ branches/safari-610.1.11-branch/Source/ThirdParty/ANGLE/Compiler.cmake      2020-04-22 00:56:30 UTC (rev 260479)
</span><span class="lines">@@ -153,8 +153,6 @@
</span><span class="cx">     "src/compiler/translator/tree_ops/RegenerateStructNames.h"
</span><span class="cx">     "src/compiler/translator/tree_ops/RemoveArrayLengthMethod.cpp"
</span><span class="cx">     "src/compiler/translator/tree_ops/RemoveArrayLengthMethod.h"
</span><del>-    "src/compiler/translator/tree_ops/RemoveAtomicCounterBuiltins.cpp"
-    "src/compiler/translator/tree_ops/RemoveAtomicCounterBuiltins.h"
</del><span class="cx">     "src/compiler/translator/tree_ops/RemoveDynamicIndexing.cpp"
</span><span class="cx">     "src/compiler/translator/tree_ops/RemoveDynamicIndexing.h"
</span><span class="cx">     "src/compiler/translator/tree_ops/RemoveInactiveInterfaceVariables.cpp"
</span></span></pre></div>
<a id="branchessafari610111branchSourceThirdPartyANGLEDEPS"></a>
<div class="modfile"><h4>Modified: branches/safari-610.1.11-branch/Source/ThirdParty/ANGLE/DEPS (260478 => 260479)</h4>
<pre class="diff"><span>
<span class="info">--- branches/safari-610.1.11-branch/Source/ThirdParty/ANGLE/DEPS     2020-04-22 00:51:48 UTC (rev 260478)
+++ branches/safari-610.1.11-branch/Source/ThirdParty/ANGLE/DEPS        2020-04-22 00:56:30 UTC (rev 260479)
</span><span class="lines">@@ -19,13 +19,13 @@
</span><span class="cx">   'checkout_angle_internal': False,
</span><span class="cx"> 
</span><span class="cx">   # Version of Chromium our Chromium-based DEPS are mirrored from.
</span><del>-  'chromium_revision': 'fa9d5805c421133e9d13cf698c4502d13398b2ce',
</del><ins>+  'chromium_revision': '8ffb18d0b983532c6c2639de67b2efc93b4df2d3',
</ins><span class="cx"> 
</span><span class="cx">   # Current revision of VK-GL-CTS (a.k.a dEQP).
</span><del>-  'vk_gl_cts_revision': 'a6b249819f7177821d4b7eefff36af07fef71825',
</del><ins>+  'vk_gl_cts_revision': 'd99a765d38d35deeb3f27cf30d9d6fe4f183510e',
</ins><span class="cx"> 
</span><span class="cx">   # Current revision of glslang, the Khronos SPIRV compiler.
</span><del>-  'glslang_revision': '99508c1ce389e678a79b00159fe0c0d13f08f213',
</del><ins>+  'glslang_revision': '5e86b28ffb8124a5ee2a58c640245ee5b285110d',
</ins><span class="cx"> 
</span><span class="cx">   # Current revision of googletest.
</span><span class="cx">   # Note: this dep cannot be auto-rolled b/c of nesting.
</span><span class="lines">@@ -43,22 +43,22 @@
</span><span class="cx">   'spirv_cross_revision': 'fd5aa3ad51ece55a1b51fe6bfb271db6844ae291',
</span><span class="cx"> 
</span><span class="cx">   # Current revision fo the SPIRV-Headers Vulkan support library.
</span><del>-  'spirv_headers_revision': 'f8bf11a0253a32375c32cad92c841237b96696c0',
</del><ins>+  'spirv_headers_revision': 'dc77030acc9c6fe7ca21fff54c5a9d7b532d7da6',
</ins><span class="cx"> 
</span><span class="cx">   # Current revision of SPIRV-Tools for Vulkan.
</span><del>-  'spirv_tools_revision': 'fd773eb50d628c1981338addc093df879757c2cf',
</del><ins>+  'spirv_tools_revision': '7a2d408dea60aa1f8d53e123b01277c41b8f83b9',
</ins><span class="cx"> 
</span><span class="cx">   # Current revision of Khronos Vulkan-Headers.
</span><del>-  'vulkan_headers_revision': '0e78ffd1dcfc3e9f14a966b9660dbc59bd967c5c',
</del><ins>+  'vulkan_headers_revision': '7264358702061d3ed819d62d3d6fd66ab1da33c3',
</ins><span class="cx"> 
</span><span class="cx">   # Current revision of Khronos Vulkan-Loader.
</span><del>-  'vulkan_loader_revision': 'cc481ef276315d54db4381b2d5dffac2b5824cbf',
</del><ins>+  'vulkan_loader_revision': 'fb94ccddb725516243644206ab07f0b82e1f0a5e',
</ins><span class="cx"> 
</span><span class="cx">   # Current revision of Khronos Vulkan-Tools.
</span><del>-  'vulkan_tools_revision': 'bec7b6e29260caa9348b1fd42b5d65443d512748',
</del><ins>+  'vulkan_tools_revision': '260679605f9843ae2cf06cfc0e44dc0d25be71b9',
</ins><span class="cx"> 
</span><span class="cx">   # Current revision of Khronos Vulkan-ValidationLayers.
</span><del>-  'vulkan_validation_revision': '55f01953d6e9d6db625f57bebbbc7a36a132ad88',
</del><ins>+  'vulkan_validation_revision': 'e85fe4c3cc9f6c12d887d2ef912241241e0f5ffa',
</ins><span class="cx"> 
</span><span class="cx">   # Three lines of non-changing comments so that
</span><span class="cx">   # the commit queue can handle CLs rolling catapult
</span><span class="lines">@@ -69,17 +69,17 @@
</span><span class="cx"> deps = {
</span><span class="cx"> 
</span><span class="cx">   'build': {
</span><del>-    'url': '{chromium_git}/chromium/src/build.git@a1cbf6469a5400f2b455ffba2e95ea47a1b47c94',
</del><ins>+    'url': '{chromium_git}/chromium/src/build.git@e5293d8fa2889a240bf47428369caf0d9e2f3dc7',
</ins><span class="cx">     'condition': 'not build_with_chromium',
</span><span class="cx">   },
</span><span class="cx"> 
</span><span class="cx">   'buildtools': {
</span><del>-    'url': '{chromium_git}/chromium/src/buildtools.git@4164a305626786b1912d467003acf4c4995bec7d',
</del><ins>+    'url': '{chromium_git}/chromium/src/buildtools.git@afc5b798c72905e85f9991152be878714c579958',
</ins><span class="cx">     'condition': 'not build_with_chromium',
</span><span class="cx">   },
</span><span class="cx"> 
</span><span class="cx">   'testing': {
</span><del>-    'url': '{chromium_git}/chromium/src/testing@3e21eec53c1688302ebc26e975d0163256bd1a15',
</del><ins>+    'url': '{chromium_git}/chromium/src/testing@cf6ed46cffec37285fb5d8acc1cce59da967ceca',
</ins><span class="cx">     'condition': 'not build_with_chromium',
</span><span class="cx">   },
</span><span class="cx"> 
</span><span class="lines">@@ -115,7 +115,7 @@
</span><span class="cx">   },
</span><span class="cx"> 
</span><span class="cx">   'third_party/googletest': {
</span><del>-    'url': '{chromium_git}/chromium/src/third_party/googletest@c96dc321101e7c9f5ba16d957afd49ee4db30548',
</del><ins>+    'url': '{chromium_git}/chromium/src/third_party/googletest@c83f99e10cff7d90190a22a79f294ea9e340f4e6',
</ins><span class="cx">     'condition': 'not build_with_chromium',
</span><span class="cx">   },
</span><span class="cx"> 
</span><span class="lines">@@ -182,7 +182,7 @@
</span><span class="cx">   },
</span><span class="cx"> 
</span><span class="cx">   'third_party/SwiftShader': {
</span><del>-    'url': '{swiftshader_git}/SwiftShader@02e15b249b12fe4e1ca5e303a5a0de0668950536',
</del><ins>+    'url': '{swiftshader_git}/SwiftShader@41a7302e9c62c207e5ac5bcce40f16a1e418c42b',
</ins><span class="cx">     'condition': 'not build_with_chromium',
</span><span class="cx">   },
</span><span class="cx"> 
</span><span class="lines">@@ -203,17 +203,17 @@
</span><span class="cx">   },
</span><span class="cx"> 
</span><span class="cx">   'third_party/yasm': {
</span><del>-    'url': '{chromium_git}/chromium/src/third_party/yasm@8e4e548d0b199df58740336024c1b3baf7c0abd7',
</del><ins>+    'url': '{chromium_git}/chromium/src/third_party/yasm@0d0134789a7df47da9ec64fb937849571f58bdb4',
</ins><span class="cx">     'condition': 'not build_with_chromium',
</span><span class="cx">   },
</span><span class="cx"> 
</span><span class="cx">   'third_party/zlib': {
</span><del>-    'url': '{chromium_git}/chromium/src/third_party/zlib@156be8c52f80cde343088b4a69a80579101b6e67',
</del><ins>+    'url': '{chromium_git}/chromium/src/third_party/zlib@b9b9a5af7cca2e683e5f2aead8418e5bf9d5a7d5',
</ins><span class="cx">     'condition': 'not build_with_chromium',
</span><span class="cx">   },
</span><span class="cx"> 
</span><span class="cx">   'tools/clang': {
</span><del>-    'url': '{chromium_git}/chromium/src/tools/clang.git@d60a6a8084300eb8de99e56b559369dcde4cffa4',
</del><ins>+    'url': '{chromium_git}/chromium/src/tools/clang.git@953ea7aff8c12dbd015f193d52e5abf276d41e85',
</ins><span class="cx">     'condition': 'not build_with_chromium',
</span><span class="cx">   },
</span><span class="cx"> 
</span><span class="lines">@@ -422,7 +422,7 @@
</span><span class="cx">                 '--recursive',
</span><span class="cx">                 '--extract',
</span><span class="cx">                 '--bucket', 'chrome-angle-capture-binaries',
</span><del>-                'src/tests/perf_tests/restricted_traces',
</del><ins>+                './src/tests/perf_tests/restricted_traces',
</ins><span class="cx">     ]
</span><span class="cx">   }
</span><span class="cx"> ]
</span></span></pre></div>
<a id="branchessafari610111branchSourceThirdPartyANGLEGLESv2cmake"></a>
<div class="modfile"><h4>Modified: branches/safari-610.1.11-branch/Source/ThirdParty/ANGLE/GLESv2.cmake (260478 => 260479)</h4>
<pre class="diff"><span>
<span class="info">--- branches/safari-610.1.11-branch/Source/ThirdParty/ANGLE/GLESv2.cmake     2020-04-22 00:51:48 UTC (rev 260478)
+++ branches/safari-610.1.11-branch/Source/ThirdParty/ANGLE/GLESv2.cmake        2020-04-22 00:56:30 UTC (rev 260479)
</span><span class="lines">@@ -197,7 +197,6 @@
</span><span class="cx">     "include/platform/FeaturesVk.h"
</span><span class="cx">     "include/platform/FrontendFeatures.h"
</span><span class="cx">     "include/platform/Platform.h"
</span><del>-    "include/vulkan/vulkan_fuchsia_ext.h"
</del><span class="cx"> )
</span><span class="cx"> 
</span><span class="cx"> 
</span><span class="lines">@@ -251,10 +250,10 @@
</span><span class="cx">     "src/libANGLE/GLES1Shaders.inc"
</span><span class="cx">     "src/libANGLE/GLES1State.h"
</span><span class="cx">     "src/libANGLE/HandleAllocator.h"
</span><ins>+    "src/libANGLE/HandleRangeAllocator.h"
</ins><span class="cx">     "src/libANGLE/Image.h"
</span><span class="cx">     "src/libANGLE/ImageIndex.h"
</span><span class="cx">     "src/libANGLE/IndexRangeCache.h"
</span><del>-    "src/libANGLE/InfoLog.h"
</del><span class="cx">     "src/libANGLE/LoggingAnnotator.h"
</span><span class="cx">     "src/libANGLE/MemoryObject.h"
</span><span class="cx">     "src/libANGLE/MemoryProgramCache.h"
</span><span class="lines">@@ -266,8 +265,8 @@
</span><span class="cx">     "src/libANGLE/Overlay_autogen.cpp"
</span><span class="cx">     "src/libANGLE/Overlay_font_autogen.cpp"
</span><span class="cx">     "src/libANGLE/Overlay_font_autogen.h"
</span><ins>+    "src/libANGLE/Path.h"
</ins><span class="cx">     "src/libANGLE/Program.h"
</span><del>-    "src/libANGLE/ProgramExecutable.h"
</del><span class="cx">     "src/libANGLE/ProgramLinkedResources.h"
</span><span class="cx">     "src/libANGLE/ProgramPipeline.h"
</span><span class="cx">     "src/libANGLE/Query.h"
</span><span class="lines">@@ -320,6 +319,7 @@
</span><span class="cx">     "src/libANGLE/renderer/ImageImpl.h"
</span><span class="cx">     "src/libANGLE/renderer/MemoryObjectImpl.h"
</span><span class="cx">     "src/libANGLE/renderer/OverlayImpl.h"
</span><ins>+    "src/libANGLE/renderer/PathImpl.h"
</ins><span class="cx">     "src/libANGLE/renderer/ProgramImpl.h"
</span><span class="cx">     "src/libANGLE/renderer/ProgramPipelineImpl.h"
</span><span class="cx">     "src/libANGLE/renderer/QueryImpl.h"
</span><span class="lines">@@ -397,6 +397,7 @@
</span><span class="cx">     "src/libANGLE/GLES1Renderer.cpp"
</span><span class="cx">     "src/libANGLE/GLES1State.cpp"
</span><span class="cx">     "src/libANGLE/HandleAllocator.cpp"
</span><ins>+    "src/libANGLE/HandleRangeAllocator.cpp"
</ins><span class="cx">     "src/libANGLE/Image.cpp"
</span><span class="cx">     "src/libANGLE/ImageIndex.cpp"
</span><span class="cx">     "src/libANGLE/IndexRangeCache.cpp"
</span><span class="lines">@@ -404,9 +405,9 @@
</span><span class="cx">     "src/libANGLE/MemoryObject.cpp"
</span><span class="cx">     "src/libANGLE/MemoryProgramCache.cpp"
</span><span class="cx">     "src/libANGLE/Observer.cpp"
</span><ins>+    "src/libANGLE/Path.cpp"
</ins><span class="cx">     "src/libANGLE/Platform.cpp"
</span><span class="cx">     "src/libANGLE/Program.cpp"
</span><del>-    "src/libANGLE/ProgramExecutable.cpp"
</del><span class="cx">     "src/libANGLE/ProgramLinkedResources.cpp"
</span><span class="cx">     "src/libANGLE/ProgramPipeline.cpp"
</span><span class="cx">     "src/libANGLE/Query.cpp"
</span><span class="lines">@@ -435,6 +436,7 @@
</span><span class="cx">     "src/libANGLE/queryconversions.cpp"
</span><span class="cx">     "src/libANGLE/queryutils.cpp"
</span><span class="cx">     "src/libANGLE/renderer/ContextImpl.cpp"
</span><ins>+    "src/libANGLE/renderer/driver_utils.cpp"
</ins><span class="cx">     "src/libANGLE/renderer/DeviceImpl.cpp"
</span><span class="cx">     "src/libANGLE/renderer/DisplayImpl.cpp"
</span><span class="cx">     "src/libANGLE/renderer/Format_table_autogen.cpp"
</span><span class="lines">@@ -442,7 +444,6 @@
</span><span class="cx">     "src/libANGLE/renderer/ShaderImpl.cpp"
</span><span class="cx">     "src/libANGLE/renderer/SurfaceImpl.cpp"
</span><span class="cx">     "src/libANGLE/renderer/TextureImpl.cpp"
</span><del>-    "src/libANGLE/renderer/driver_utils.cpp"
</del><span class="cx">     "src/libANGLE/renderer/load_functions_table_autogen.cpp"
</span><span class="cx">     "src/libANGLE/renderer/renderer_utils.cpp"
</span><span class="cx">     "src/libANGLE/validationEGL.cpp"
</span><span class="lines">@@ -454,18 +455,18 @@
</span><span class="cx">     "src/libANGLE/validationES32.cpp"
</span><span class="cx">     "src/libANGLE/validationESEXT.cpp"
</span><span class="cx">     "src/libANGLE/validationGL1.cpp"
</span><ins>+    "src/libANGLE/validationGL2.cpp"
+    "src/libANGLE/validationGL3.cpp"
+    "src/libANGLE/validationGL4.cpp"
</ins><span class="cx">     "src/libANGLE/validationGL11.cpp"
</span><span class="cx">     "src/libANGLE/validationGL12.cpp"
</span><del>-    "src/libANGLE/validationGL13.cpp"
</del><span class="cx">     "src/libANGLE/validationGL14.cpp"
</span><span class="cx">     "src/libANGLE/validationGL15.cpp"
</span><del>-    "src/libANGLE/validationGL2.cpp"
</del><ins>+    "src/libANGLE/validationGL13.cpp"
</ins><span class="cx">     "src/libANGLE/validationGL21.cpp"
</span><del>-    "src/libANGLE/validationGL3.cpp"
</del><span class="cx">     "src/libANGLE/validationGL31.cpp"
</span><span class="cx">     "src/libANGLE/validationGL32.cpp"
</span><span class="cx">     "src/libANGLE/validationGL33.cpp"
</span><del>-    "src/libANGLE/validationGL4.cpp"
</del><span class="cx">     "src/libANGLE/validationGL41.cpp"
</span><span class="cx">     "src/libANGLE/validationGL42.cpp"
</span><span class="cx">     "src/libANGLE/validationGL43.cpp"
</span><span class="lines">@@ -491,6 +492,7 @@
</span><span class="cx">     "src/libANGLE/renderer/d3d/DynamicImage2DHLSL.h"
</span><span class="cx">     "src/libANGLE/renderer/d3d/EGLImageD3D.cpp"
</span><span class="cx">     "src/libANGLE/renderer/d3d/EGLImageD3D.h"
</span><ins>+    "src/libANGLE/renderer/d3d/formatutilsD3D.h"
</ins><span class="cx">     "src/libANGLE/renderer/d3d/FramebufferD3D.cpp"
</span><span class="cx">     "src/libANGLE/renderer/d3d/FramebufferD3D.h"
</span><span class="cx">     "src/libANGLE/renderer/d3d/HLSLCompiler.cpp"
</span><span class="lines">@@ -505,12 +507,12 @@
</span><span class="cx">     "src/libANGLE/renderer/d3d/NativeWindowD3D.h"
</span><span class="cx">     "src/libANGLE/renderer/d3d/ProgramD3D.cpp"
</span><span class="cx">     "src/libANGLE/renderer/d3d/ProgramD3D.h"
</span><del>-    "src/libANGLE/renderer/d3d/RenderTargetD3D.cpp"
-    "src/libANGLE/renderer/d3d/RenderTargetD3D.h"
</del><span class="cx">     "src/libANGLE/renderer/d3d/RenderbufferD3D.cpp"
</span><span class="cx">     "src/libANGLE/renderer/d3d/RenderbufferD3D.h"
</span><span class="cx">     "src/libANGLE/renderer/d3d/RendererD3D.cpp"
</span><span class="cx">     "src/libANGLE/renderer/d3d/RendererD3D.h"
</span><ins>+    "src/libANGLE/renderer/d3d/RenderTargetD3D.h"
+    "src/libANGLE/renderer/d3d/RenderTargetD3D.cpp"
</ins><span class="cx">     "src/libANGLE/renderer/d3d/SamplerD3D.h"
</span><span class="cx">     "src/libANGLE/renderer/d3d/ShaderD3D.cpp"
</span><span class="cx">     "src/libANGLE/renderer/d3d/ShaderD3D.h"
</span><span class="lines">@@ -527,7 +529,6 @@
</span><span class="cx">     "src/libANGLE/renderer/d3d/VertexBuffer.h"
</span><span class="cx">     "src/libANGLE/renderer/d3d/VertexDataManager.cpp"
</span><span class="cx">     "src/libANGLE/renderer/d3d/VertexDataManager.h"
</span><del>-    "src/libANGLE/renderer/d3d/formatutilsD3D.h"
</del><span class="cx"> )
</span><span class="cx"> 
</span><span class="cx"> 
</span><span class="lines">@@ -542,6 +543,8 @@
</span><span class="cx">     "src/libANGLE/renderer/d3d/d3d9/DebugAnnotator9.h"
</span><span class="cx">     "src/libANGLE/renderer/d3d/d3d9/Fence9.cpp"
</span><span class="cx">     "src/libANGLE/renderer/d3d/d3d9/Fence9.h"
</span><ins>+    "src/libANGLE/renderer/d3d/d3d9/formatutils9.cpp"
+    "src/libANGLE/renderer/d3d/d3d9/formatutils9.h"
</ins><span class="cx">     "src/libANGLE/renderer/d3d/d3d9/Framebuffer9.cpp"
</span><span class="cx">     "src/libANGLE/renderer/d3d/d3d9/Framebuffer9.h"
</span><span class="cx">     "src/libANGLE/renderer/d3d/d3d9/Image9.cpp"
</span><span class="lines">@@ -552,13 +555,23 @@
</span><span class="cx">     "src/libANGLE/renderer/d3d/d3d9/NativeWindow9.h"
</span><span class="cx">     "src/libANGLE/renderer/d3d/d3d9/Query9.cpp"
</span><span class="cx">     "src/libANGLE/renderer/d3d/d3d9/Query9.h"
</span><ins>+    "src/libANGLE/renderer/d3d/d3d9/Renderer9.cpp"
+    "src/libANGLE/renderer/d3d/d3d9/Renderer9.h"
+    "src/libANGLE/renderer/d3d/d3d9/renderer9_utils.cpp"
+    "src/libANGLE/renderer/d3d/d3d9/renderer9_utils.h"
</ins><span class="cx">     "src/libANGLE/renderer/d3d/d3d9/RenderTarget9.cpp"
</span><span class="cx">     "src/libANGLE/renderer/d3d/d3d9/RenderTarget9.h"
</span><del>-    "src/libANGLE/renderer/d3d/d3d9/Renderer9.cpp"
-    "src/libANGLE/renderer/d3d/d3d9/Renderer9.h"
</del><span class="cx">     "src/libANGLE/renderer/d3d/d3d9/ShaderCache.h"
</span><span class="cx">     "src/libANGLE/renderer/d3d/d3d9/ShaderExecutable9.cpp"
</span><span class="cx">     "src/libANGLE/renderer/d3d/d3d9/ShaderExecutable9.h"
</span><ins>+    "src/libANGLE/renderer/d3d/d3d9/shaders/compiled/componentmaskps.h"
+    "src/libANGLE/renderer/d3d/d3d9/shaders/compiled/componentmaskpremultps.h"
+    "src/libANGLE/renderer/d3d/d3d9/shaders/compiled/componentmaskunmultps.h"
+    "src/libANGLE/renderer/d3d/d3d9/shaders/compiled/luminanceps.h"
+    "src/libANGLE/renderer/d3d/d3d9/shaders/compiled/luminancepremultps.h"
+    "src/libANGLE/renderer/d3d/d3d9/shaders/compiled/luminanceunmultps.h"
+    "src/libANGLE/renderer/d3d/d3d9/shaders/compiled/passthroughps.h"
+    "src/libANGLE/renderer/d3d/d3d9/shaders/compiled/standardvs.h"
</ins><span class="cx">     "src/libANGLE/renderer/d3d/d3d9/StateManager9.cpp"
</span><span class="cx">     "src/libANGLE/renderer/d3d/d3d9/StateManager9.h"
</span><span class="cx">     "src/libANGLE/renderer/d3d/d3d9/SwapChain9.cpp"
</span><span class="lines">@@ -568,21 +581,9 @@
</span><span class="cx">     "src/libANGLE/renderer/d3d/d3d9/VertexArray9.h"
</span><span class="cx">     "src/libANGLE/renderer/d3d/d3d9/VertexBuffer9.cpp"
</span><span class="cx">     "src/libANGLE/renderer/d3d/d3d9/VertexBuffer9.h"
</span><ins>+    "src/libANGLE/renderer/d3d/d3d9/vertexconversion.h"
</ins><span class="cx">     "src/libANGLE/renderer/d3d/d3d9/VertexDeclarationCache.cpp"
</span><span class="cx">     "src/libANGLE/renderer/d3d/d3d9/VertexDeclarationCache.h"
</span><del>-    "src/libANGLE/renderer/d3d/d3d9/formatutils9.cpp"
-    "src/libANGLE/renderer/d3d/d3d9/formatutils9.h"
-    "src/libANGLE/renderer/d3d/d3d9/renderer9_utils.cpp"
-    "src/libANGLE/renderer/d3d/d3d9/renderer9_utils.h"
-    "src/libANGLE/renderer/d3d/d3d9/shaders/compiled/componentmaskpremultps.h"
-    "src/libANGLE/renderer/d3d/d3d9/shaders/compiled/componentmaskps.h"
-    "src/libANGLE/renderer/d3d/d3d9/shaders/compiled/componentmaskunmultps.h"
-    "src/libANGLE/renderer/d3d/d3d9/shaders/compiled/luminancepremultps.h"
-    "src/libANGLE/renderer/d3d/d3d9/shaders/compiled/luminanceps.h"
-    "src/libANGLE/renderer/d3d/d3d9/shaders/compiled/luminanceunmultps.h"
-    "src/libANGLE/renderer/d3d/d3d9/shaders/compiled/passthroughps.h"
-    "src/libANGLE/renderer/d3d/d3d9/shaders/compiled/standardvs.h"
-    "src/libANGLE/renderer/d3d/d3d9/vertexconversion.h"
</del><span class="cx"> )
</span><span class="cx"> 
</span><span class="cx"> 
</span><span class="lines">@@ -598,10 +599,15 @@
</span><span class="cx">     "src/libANGLE/renderer/d3d/d3d11/Context11.h"
</span><span class="cx">     "src/libANGLE/renderer/d3d/d3d11/DebugAnnotator11.cpp"
</span><span class="cx">     "src/libANGLE/renderer/d3d/d3d11/DebugAnnotator11.h"
</span><ins>+    "src/libANGLE/renderer/d3d/d3d11/dxgi_format_map_autogen.cpp"
+    "src/libANGLE/renderer/d3d/d3d11/dxgi_support_table_autogen.cpp"
+    "src/libANGLE/renderer/d3d/d3d11/dxgi_support_table.h"
</ins><span class="cx">     "src/libANGLE/renderer/d3d/d3d11/ExternalImageSiblingImpl11.cpp"
</span><span class="cx">     "src/libANGLE/renderer/d3d/d3d11/ExternalImageSiblingImpl11.h"
</span><span class="cx">     "src/libANGLE/renderer/d3d/d3d11/Fence11.cpp"
</span><span class="cx">     "src/libANGLE/renderer/d3d/d3d11/Fence11.h"
</span><ins>+    "src/libANGLE/renderer/d3d/d3d11/formatutils11.cpp"
+    "src/libANGLE/renderer/d3d/d3d11/formatutils11.h"
</ins><span class="cx">     "src/libANGLE/renderer/d3d/d3d11/Framebuffer11.cpp"
</span><span class="cx">     "src/libANGLE/renderer/d3d/d3d11/Framebuffer11.h"
</span><span class="cx">     "src/libANGLE/renderer/d3d/d3d11/Image11.cpp"
</span><span class="lines">@@ -610,9 +616,9 @@
</span><span class="cx">     "src/libANGLE/renderer/d3d/d3d11/IndexBuffer11.h"
</span><span class="cx">     "src/libANGLE/renderer/d3d/d3d11/InputLayoutCache.cpp"
</span><span class="cx">     "src/libANGLE/renderer/d3d/d3d11/InputLayoutCache.h"
</span><ins>+    "src/libANGLE/renderer/d3d/d3d11/NativeWindow11.h"
</ins><span class="cx">     "src/libANGLE/renderer/d3d/d3d11/MappedSubresourceVerifier11.cpp"
</span><span class="cx">     "src/libANGLE/renderer/d3d/d3d11/MappedSubresourceVerifier11.h"
</span><del>-    "src/libANGLE/renderer/d3d/d3d11/NativeWindow11.h"
</del><span class="cx">     "src/libANGLE/renderer/d3d/d3d11/PixelTransfer11.cpp"
</span><span class="cx">     "src/libANGLE/renderer/d3d/d3d11/PixelTransfer11.h"
</span><span class="cx">     "src/libANGLE/renderer/d3d/d3d11/Program11.cpp"
</span><span class="lines">@@ -621,39 +627,18 @@
</span><span class="cx">     "src/libANGLE/renderer/d3d/d3d11/ProgramPipeline11.h"
</span><span class="cx">     "src/libANGLE/renderer/d3d/d3d11/Query11.cpp"
</span><span class="cx">     "src/libANGLE/renderer/d3d/d3d11/Query11.h"
</span><ins>+    "src/libANGLE/renderer/d3d/d3d11/Renderer11.cpp"
+    "src/libANGLE/renderer/d3d/d3d11/Renderer11.h"
+    "src/libANGLE/renderer/d3d/d3d11/renderer11_utils.cpp"
+    "src/libANGLE/renderer/d3d/d3d11/renderer11_utils.h"
</ins><span class="cx">     "src/libANGLE/renderer/d3d/d3d11/RenderStateCache.cpp"
</span><span class="cx">     "src/libANGLE/renderer/d3d/d3d11/RenderStateCache.h"
</span><span class="cx">     "src/libANGLE/renderer/d3d/d3d11/RenderTarget11.cpp"
</span><span class="cx">     "src/libANGLE/renderer/d3d/d3d11/RenderTarget11.h"
</span><del>-    "src/libANGLE/renderer/d3d/d3d11/Renderer11.cpp"
-    "src/libANGLE/renderer/d3d/d3d11/Renderer11.h"
</del><span class="cx">     "src/libANGLE/renderer/d3d/d3d11/ResourceManager11.cpp"
</span><span class="cx">     "src/libANGLE/renderer/d3d/d3d11/ResourceManager11.h"
</span><span class="cx">     "src/libANGLE/renderer/d3d/d3d11/ShaderExecutable11.cpp"
</span><span class="cx">     "src/libANGLE/renderer/d3d/d3d11/ShaderExecutable11.h"
</span><del>-    "src/libANGLE/renderer/d3d/d3d11/StateManager11.cpp"
-    "src/libANGLE/renderer/d3d/d3d11/StateManager11.h"
-    "src/libANGLE/renderer/d3d/d3d11/StreamProducerD3DTexture.cpp"
-    "src/libANGLE/renderer/d3d/d3d11/StreamProducerD3DTexture.h"
-    "src/libANGLE/renderer/d3d/d3d11/SwapChain11.cpp"
-    "src/libANGLE/renderer/d3d/d3d11/SwapChain11.h"
-    "src/libANGLE/renderer/d3d/d3d11/TextureStorage11.cpp"
-    "src/libANGLE/renderer/d3d/d3d11/TextureStorage11.h"
-    "src/libANGLE/renderer/d3d/d3d11/TransformFeedback11.cpp"
-    "src/libANGLE/renderer/d3d/d3d11/TransformFeedback11.h"
-    "src/libANGLE/renderer/d3d/d3d11/Trim11.cpp"
-    "src/libANGLE/renderer/d3d/d3d11/Trim11.h"
-    "src/libANGLE/renderer/d3d/d3d11/VertexArray11.cpp"
-    "src/libANGLE/renderer/d3d/d3d11/VertexArray11.h"
-    "src/libANGLE/renderer/d3d/d3d11/VertexBuffer11.cpp"
-    "src/libANGLE/renderer/d3d/d3d11/VertexBuffer11.h"
-    "src/libANGLE/renderer/d3d/d3d11/dxgi_format_map_autogen.cpp"
-    "src/libANGLE/renderer/d3d/d3d11/dxgi_support_table.h"
-    "src/libANGLE/renderer/d3d/d3d11/dxgi_support_table_autogen.cpp"
-    "src/libANGLE/renderer/d3d/d3d11/formatutils11.cpp"
-    "src/libANGLE/renderer/d3d/d3d11/formatutils11.h"
-    "src/libANGLE/renderer/d3d/d3d11/renderer11_utils.cpp"
-    "src/libANGLE/renderer/d3d/d3d11/renderer11_utils.h"
</del><span class="cx">     "src/libANGLE/renderer/d3d/d3d11/shaders/compiled/buffertotexture11_gs.h"
</span><span class="cx">     "src/libANGLE/renderer/d3d/d3d11/shaders/compiled/buffertotexture11_ps_4f.h"
</span><span class="cx">     "src/libANGLE/renderer/d3d/d3d11/shaders/compiled/buffertotexture11_ps_4i.h"
</span><span class="lines">@@ -708,18 +693,34 @@
</span><span class="cx">     "src/libANGLE/renderer/d3d/d3d11/shaders/compiled/swizzleui2darrayps.h"
</span><span class="cx">     "src/libANGLE/renderer/d3d/d3d11/shaders/compiled/swizzleui2dps.h"
</span><span class="cx">     "src/libANGLE/renderer/d3d/d3d11/shaders/compiled/swizzleui3dps.h"
</span><ins>+    "src/libANGLE/renderer/d3d/d3d11/StateManager11.cpp"
+    "src/libANGLE/renderer/d3d/d3d11/StateManager11.h"
+    "src/libANGLE/renderer/d3d/d3d11/StreamProducerD3DTexture.cpp"
+    "src/libANGLE/renderer/d3d/d3d11/StreamProducerD3DTexture.h"
+    "src/libANGLE/renderer/d3d/d3d11/SwapChain11.cpp"
+    "src/libANGLE/renderer/d3d/d3d11/SwapChain11.h"
</ins><span class="cx">     "src/libANGLE/renderer/d3d/d3d11/texture_format_table.cpp"
</span><span class="cx">     "src/libANGLE/renderer/d3d/d3d11/texture_format_table.h"
</span><span class="cx">     "src/libANGLE/renderer/d3d/d3d11/texture_format_table_autogen.cpp"
</span><span class="cx">     "src/libANGLE/renderer/d3d/d3d11/texture_format_table_utils.h"
</span><ins>+    "src/libANGLE/renderer/d3d/d3d11/TextureStorage11.cpp"
+    "src/libANGLE/renderer/d3d/d3d11/TextureStorage11.h"
+    "src/libANGLE/renderer/d3d/d3d11/TransformFeedback11.cpp"
+    "src/libANGLE/renderer/d3d/d3d11/TransformFeedback11.h"
+    "src/libANGLE/renderer/d3d/d3d11/Trim11.cpp"
+    "src/libANGLE/renderer/d3d/d3d11/Trim11.h"
+    "src/libANGLE/renderer/d3d/d3d11/VertexArray11.cpp"
+    "src/libANGLE/renderer/d3d/d3d11/VertexArray11.h"
+    "src/libANGLE/renderer/d3d/d3d11/VertexBuffer11.cpp"
+    "src/libANGLE/renderer/d3d/d3d11/VertexBuffer11.h"
</ins><span class="cx"> )
</span><span class="cx"> 
</span><span class="cx"> 
</span><span class="cx"> set(libangle_d3d11_win32_sources
</span><ins>+    "src/libANGLE/renderer/d3d/d3d11/win32/NativeWindow11Win32.cpp"
+    "src/libANGLE/renderer/d3d/d3d11/win32/NativeWindow11Win32.h"
</ins><span class="cx">     "src/libANGLE/renderer/d3d/d3d11/converged/CompositorNativeWindow11.cpp"
</span><span class="cx">     "src/libANGLE/renderer/d3d/d3d11/converged/CompositorNativeWindow11.h"
</span><del>-    "src/libANGLE/renderer/d3d/d3d11/win32/NativeWindow11Win32.cpp"
-    "src/libANGLE/renderer/d3d/d3d11/win32/NativeWindow11Win32.h"
</del><span class="cx">     "src/third_party/systeminfo/SystemInfo.cpp"
</span><span class="cx">     "src/third_party/systeminfo/SystemInfo.h"
</span><span class="cx"> )
</span><span class="lines">@@ -762,6 +763,8 @@
</span><span class="cx">     "src/libANGLE/renderer/gl/ImageGL.h"
</span><span class="cx">     "src/libANGLE/renderer/gl/MemoryObjectGL.cpp"
</span><span class="cx">     "src/libANGLE/renderer/gl/MemoryObjectGL.h"
</span><ins>+    "src/libANGLE/renderer/gl/PathGL.h"
+    "src/libANGLE/renderer/gl/PathGL.cpp"
</ins><span class="cx">     "src/libANGLE/renderer/gl/ProgramGL.cpp"
</span><span class="cx">     "src/libANGLE/renderer/gl/ProgramGL.h"
</span><span class="cx">     "src/libANGLE/renderer/gl/ProgramPipelineGL.cpp"
</span><span class="lines">@@ -810,10 +813,10 @@
</span><span class="cx">     "src/libANGLE/renderer/gl/wgl/ContextWGL.h"
</span><span class="cx">     "src/libANGLE/renderer/gl/wgl/D3DTextureSurfaceWGL.cpp"
</span><span class="cx">     "src/libANGLE/renderer/gl/wgl/D3DTextureSurfaceWGL.h"
</span><ins>+    "src/libANGLE/renderer/gl/wgl/DisplayWGL.cpp"
+    "src/libANGLE/renderer/gl/wgl/DisplayWGL.h"
</ins><span class="cx">     "src/libANGLE/renderer/gl/wgl/DXGISwapChainWindowSurfaceWGL.cpp"
</span><span class="cx">     "src/libANGLE/renderer/gl/wgl/DXGISwapChainWindowSurfaceWGL.h"
</span><del>-    "src/libANGLE/renderer/gl/wgl/DisplayWGL.cpp"
-    "src/libANGLE/renderer/gl/wgl/DisplayWGL.h"
</del><span class="cx">     "src/libANGLE/renderer/gl/wgl/FunctionsWGL.cpp"
</span><span class="cx">     "src/libANGLE/renderer/gl/wgl/FunctionsWGL.h"
</span><span class="cx">     "src/libANGLE/renderer/gl/wgl/PbufferSurfaceWGL.cpp"
</span><span class="lines">@@ -835,10 +838,10 @@
</span><span class="cx">     "src/libANGLE/renderer/gl/glx/DisplayGLX.h"
</span><span class="cx">     "src/libANGLE/renderer/gl/glx/FunctionsGLX.cpp"
</span><span class="cx">     "src/libANGLE/renderer/gl/glx/FunctionsGLX.h"
</span><ins>+    "src/libANGLE/renderer/gl/glx/RendererGLX.h"
+    "src/libANGLE/renderer/gl/glx/RendererGLX.cpp"
</ins><span class="cx">     "src/libANGLE/renderer/gl/glx/PbufferSurfaceGLX.cpp"
</span><span class="cx">     "src/libANGLE/renderer/gl/glx/PbufferSurfaceGLX.h"
</span><del>-    "src/libANGLE/renderer/gl/glx/RendererGLX.cpp"
-    "src/libANGLE/renderer/gl/glx/RendererGLX.h"
</del><span class="cx">     "src/libANGLE/renderer/gl/glx/SurfaceGLX.h"
</span><span class="cx">     "src/libANGLE/renderer/gl/glx/WindowSurfaceGLX.cpp"
</span><span class="cx">     "src/libANGLE/renderer/gl/glx/WindowSurfaceGLX.h"
</span><span class="lines">@@ -853,10 +856,13 @@
</span><span class="cx">     "src/libANGLE/renderer/gl/egl/DisplayEGL.cpp"
</span><span class="cx">     "src/libANGLE/renderer/gl/egl/DisplayEGL.h"
</span><span class="cx">     "src/libANGLE/renderer/gl/egl/ExternalImageSiblingEGL.h"
</span><ins>+    "src/libANGLE/renderer/gl/egl/egl_utils.cpp"
+    "src/libANGLE/renderer/gl/egl/egl_utils.h"
</ins><span class="cx">     "src/libANGLE/renderer/gl/egl/FunctionsEGL.cpp"
</span><span class="cx">     "src/libANGLE/renderer/gl/egl/FunctionsEGL.h"
</span><span class="cx">     "src/libANGLE/renderer/gl/egl/ImageEGL.cpp"
</span><span class="cx">     "src/libANGLE/renderer/gl/egl/ImageEGL.h"
</span><ins>+    "src/libANGLE/renderer/gl/egl/functionsegl_typedefs.h"
</ins><span class="cx">     "src/libANGLE/renderer/gl/egl/PbufferSurfaceEGL.cpp"
</span><span class="cx">     "src/libANGLE/renderer/gl/egl/PbufferSurfaceEGL.h"
</span><span class="cx">     "src/libANGLE/renderer/gl/egl/RendererEGL.cpp"
</span><span class="lines">@@ -867,9 +873,6 @@
</span><span class="cx">     "src/libANGLE/renderer/gl/egl/SyncEGL.h"
</span><span class="cx">     "src/libANGLE/renderer/gl/egl/WindowSurfaceEGL.cpp"
</span><span class="cx">     "src/libANGLE/renderer/gl/egl/WindowSurfaceEGL.h"
</span><del>-    "src/libANGLE/renderer/gl/egl/egl_utils.cpp"
-    "src/libANGLE/renderer/gl/egl/egl_utils.h"
-    "src/libANGLE/renderer/gl/egl/functionsegl_typedefs.h"
</del><span class="cx"> )
</span><span class="cx"> set(libangle_gl_egl_dl_sources
</span><span class="cx">     "src/libANGLE/renderer/gl/egl/FunctionsEGLDL.cpp"
</span><span class="lines">@@ -898,16 +901,16 @@
</span><span class="cx">     "src/libANGLE/renderer/gl/cgl/ContextCGL.h"
</span><span class="cx">     "src/libANGLE/renderer/gl/cgl/DeviceCGL.cpp"
</span><span class="cx">     "src/libANGLE/renderer/gl/cgl/DeviceCGL.h"
</span><ins>+    "src/libANGLE/renderer/gl/cgl/DisplayCGL.mm"
</ins><span class="cx">     "src/libANGLE/renderer/gl/cgl/DisplayCGL.h"
</span><del>-    "src/libANGLE/renderer/gl/cgl/DisplayCGL.mm"
</del><span class="cx">     "src/libANGLE/renderer/gl/cgl/IOSurfaceSurfaceCGL.cpp"
</span><span class="cx">     "src/libANGLE/renderer/gl/cgl/IOSurfaceSurfaceCGL.h"
</span><ins>+    "src/libANGLE/renderer/gl/cgl/RendererCGL.cpp"
+    "src/libANGLE/renderer/gl/cgl/RendererCGL.h"
</ins><span class="cx">     "src/libANGLE/renderer/gl/cgl/PbufferSurfaceCGL.cpp"
</span><span class="cx">     "src/libANGLE/renderer/gl/cgl/PbufferSurfaceCGL.h"
</span><del>-    "src/libANGLE/renderer/gl/cgl/RendererCGL.cpp"
-    "src/libANGLE/renderer/gl/cgl/RendererCGL.h"
</del><ins>+    "src/libANGLE/renderer/gl/cgl/WindowSurfaceCGL.mm"
</ins><span class="cx">     "src/libANGLE/renderer/gl/cgl/WindowSurfaceCGL.h"
</span><del>-    "src/libANGLE/renderer/gl/cgl/WindowSurfaceCGL.mm"
</del><span class="cx"> )
</span><span class="cx"> 
</span><span class="cx"> 
</span><span class="lines">@@ -966,6 +969,8 @@
</span><span class="cx">     "src/libANGLE/renderer/null/FramebufferNULL.h"
</span><span class="cx">     "src/libANGLE/renderer/null/ImageNULL.cpp"
</span><span class="cx">     "src/libANGLE/renderer/null/ImageNULL.h"
</span><ins>+    "src/libANGLE/renderer/null/PathNULL.cpp"
+    "src/libANGLE/renderer/null/PathNULL.h"
</ins><span class="cx">     "src/libANGLE/renderer/null/ProgramNULL.cpp"
</span><span class="cx">     "src/libANGLE/renderer/null/ProgramNULL.h"
</span><span class="cx">     "src/libANGLE/renderer/null/ProgramPipelineNULL.cpp"
</span><span class="lines">@@ -1027,16 +1032,16 @@
</span><span class="cx">     "src/libGL/entry_points_gl_4_3_autogen.cpp"
</span><span class="cx">     "src/libGL/entry_points_gl_4_3_autogen.h"
</span><span class="cx">     "src/libGL/entry_points_gl_4_4_autogen.cpp"
</span><ins>+    "src/libGL/entry_points_gl_4_6_autogen.cpp"
</ins><span class="cx">     "src/libGL/entry_points_gl_4_4_autogen.h"
</span><span class="cx">     "src/libGL/entry_points_gl_4_5_autogen.cpp"
</span><span class="cx">     "src/libGL/entry_points_gl_4_5_autogen.h"
</span><del>-    "src/libGL/entry_points_gl_4_6_autogen.cpp"
</del><span class="cx">     "src/libGL/entry_points_gl_4_6_autogen.h"
</span><span class="cx">     "src/libGL/entry_points_wgl.cpp"
</span><span class="cx">     "src/libGL/entry_points_wgl.h"
</span><del>-    "src/libGL/libGL.rc"
</del><span class="cx">     "src/libGL/libGL_autogen.cpp"
</span><span class="cx">     "src/libGL/libGL_autogen.def"
</span><ins>+    "src/libGL/libGL.rc"
</ins><span class="cx">     "src/libGL/proc_table_wgl.h"
</span><span class="cx">     "src/libGL/proc_table_wgl_autogen.cpp"
</span><span class="cx">     "src/libGLESv2/global_state.cpp"
</span><span class="lines">@@ -1068,8 +1073,8 @@
</span><span class="cx">     "src/libGLESv2/entry_points_gles_ext_autogen.h"
</span><span class="cx">     "src/libGLESv2/global_state.cpp"
</span><span class="cx">     "src/libGLESv2/global_state.h"
</span><ins>+    "src/libGLESv2/libGLESv2_autogen.cpp"
</ins><span class="cx">     "src/libGLESv2/libGLESv2.rc"
</span><del>-    "src/libGLESv2/libGLESv2_autogen.cpp"
</del><span class="cx">     "src/libGLESv2/proc_table_egl.h"
</span><span class="cx">     "src/libGLESv2/proc_table_egl_autogen.cpp"
</span><span class="cx">     "src/libGLESv2/resource.h"
</span><span class="lines">@@ -1085,10 +1090,10 @@
</span><span class="cx"> 
</span><span class="cx"> 
</span><span class="cx"> set(libegl_sources
</span><del>-    "src/libEGL/egl_loader_autogen.h"
</del><span class="cx">     "src/libEGL/libEGL.cpp"
</span><span class="cx">     "src/libEGL/libEGL.rc"
</span><span class="cx">     "src/libEGL/resource.h"
</span><span class="cx">     "src/libGLESv2/entry_points_egl.h"
</span><span class="cx">     "src/libGLESv2/entry_points_egl_ext.h"
</span><ins>+    "src/libEGL/egl_loader_autogen.h"
</ins><span class="cx"> )
</span></span></pre></div>
<a id="branchessafari610111branchSourceThirdPartyANGLEOWNERS"></a>
<div class="modfile"><h4>Modified: branches/safari-610.1.11-branch/Source/ThirdParty/ANGLE/OWNERS (260478 => 260479)</h4>
<pre class="diff"><span>
<span class="info">--- branches/safari-610.1.11-branch/Source/ThirdParty/ANGLE/OWNERS   2020-04-22 00:51:48 UTC (rev 260478)
+++ branches/safari-610.1.11-branch/Source/ThirdParty/ANGLE/OWNERS      2020-04-22 00:56:30 UTC (rev 260479)
</span><span class="lines">@@ -1,18 +1,9 @@
</span><del>-# See https://chromium.googlesource.com/angle/angle/+/master/doc/ContributingCode.md#selecting-reviewers for more info
</del><ins>+# See https://chromium.googlesource.com/angle/angle/+/master/doc/ContributingCode.md#selecting-reviewers for per-file owners
+cwallez@chromium.org
</ins><span class="cx"> geofflang@chromium.org
</span><del>-geofflang@google.com
</del><span class="cx"> jmadill@chromium.org
</span><del>-jmadill@google.com
-jonahr@google.com
</del><span class="cx"> syoussefi@chromium.org
</span><del>-syoussefi@google.com
</del><span class="cx"> ynovikov@chromium.org
</span><del>-ynovikov@google.com
</del><span class="cx"> 
</span><del>-per-file AUTHORS=*
-per-file CONTRIBUTORS=*
-per-file DEPS=*
-per-file WATCHLISTS=*
-
</del><span class="cx"> # COMPONENT: Internals>GPU>ANGLE
</span><span class="cx"> # TEAM: angleproject@googlegroups.com
</span></span></pre></div>
<a id="branchessafari610111branchSourceThirdPartyANGLEPRESUBMITpy"></a>
<div class="modfile"><h4>Modified: branches/safari-610.1.11-branch/Source/ThirdParty/ANGLE/PRESUBMIT.py (260478 => 260479)</h4>
<pre class="diff"><span>
<span class="info">--- branches/safari-610.1.11-branch/Source/ThirdParty/ANGLE/PRESUBMIT.py     2020-04-22 00:51:48 UTC (rev 260478)
+++ branches/safari-610.1.11-branch/Source/ThirdParty/ANGLE/PRESUBMIT.py        2020-04-22 00:56:30 UTC (rev 260479)
</span><span class="lines">@@ -43,7 +43,7 @@
</span><span class="cx">     if len(bugs) == 1 and bugs[0] == 'None':
</span><span class="cx">         return []
</span><span class="cx"> 
</span><del>-    projects = ['angleproject', 'chromium', 'dawn', 'fuchsia', 'skia', 'swiftshader', 'b']
</del><ins>+    projects = ['angleproject', 'chromium', 'dawn', 'fuchsia', 'skia', 'swiftshader']
</ins><span class="cx">     bug_regex = re.compile(r"([a-z]+):(\d+)")
</span><span class="cx">     errors = []
</span><span class="cx">     extra_help = None
</span></span></pre></div>
<a id="branchessafari610111branchSourceThirdPartyANGLEREADMEmd"></a>
<div class="modfile"><h4>Modified: branches/safari-610.1.11-branch/Source/ThirdParty/ANGLE/README.md (260478 => 260479)</h4>
<pre class="diff"><span>
<span class="info">--- branches/safari-610.1.11-branch/Source/ThirdParty/ANGLE/README.md        2020-04-22 00:51:48 UTC (rev 260478)
+++ branches/safari-610.1.11-branch/Source/ThirdParty/ANGLE/README.md   2020-04-22 00:56:30 UTC (rev 260479)
</span><span class="lines">@@ -2,18 +2,18 @@
</span><span class="cx"> 
</span><span class="cx"> The goal of ANGLE is to allow users of multiple operating systems to seamlessly run WebGL and other
</span><span class="cx"> OpenGL ES content by translating OpenGL ES API calls to one of the hardware-supported APIs available
</span><del>-for that platform. ANGLE currently provides translation from OpenGL ES 2.0, 3.0 and 3.1 to Vulkan,
-desktop OpenGL, OpenGL ES, Direct3D 9, and Direct3D 11. Future plans include ES 3.2, translation to
-Metal and MacOS, Chrome OS, and Fuchsia support.
</del><ins>+for that platform. ANGLE currently provides translation from OpenGL ES 2.0 and 3.0 to desktop
+OpenGL, OpenGL ES, Direct3D 9, and Direct3D 11. Support for translation from OpenGL ES to Vulkan is
+underway, and future plans include compute shader support (ES 3.1) and MacOS support.
</ins><span class="cx"> 
</span><span class="cx"> ### Level of OpenGL ES support via backing renderers
</span><span class="cx"> 
</span><span class="cx"> |                |  Direct3D 9   |  Direct3D 11     |   Desktop GL   |    GL ES      |    Vulkan     |    Metal      |
</span><span class="cx"> |----------------|:-------------:|:----------------:|:--------------:|:-------------:|:-------------:|:-------------:|
</span><del>-| OpenGL ES 2.0  |    complete   |    complete      |    complete    |    complete   |    complete   |  in progress  |
-| OpenGL ES 3.0  |               |    complete      |    complete    |    complete   |    complete   |               |
-| OpenGL ES 3.1  |               |   in progress    |    complete    |    complete   |  in progress  |               |
-| OpenGL ES 3.2  |               |                  |  in progress   |  in progress  |  in progress  |               |
</del><ins>+| OpenGL ES 2.0  |    complete   |    complete      |    complete    |   complete    |    complete   |  in progress  |
+| OpenGL ES 3.0  |               |    complete      |    complete    |   complete    |  in progress  |               |
+| OpenGL ES 3.1  |               |   in progress    |    complete    |   complete    |  in progress  |               |
+| OpenGL ES 3.2  |               |                  |    planned     |    planned    |    planned    |               |
</ins><span class="cx"> 
</span><span class="cx"> ### Platform support via backing renderers
</span><span class="cx"> 
</span><span class="lines">@@ -28,8 +28,6 @@
</span><span class="cx"> | Fuchsia     |                |                |               |             | in progress |             |
</span><span class="cx"> 
</span><span class="cx"> ANGLE v1.0.772 was certified compliant by passing the ES 2.0.3 conformance tests in October 2011.
</span><del>-With the Vulkan backend, ANGLE 2.1.0.d46e2fb1e341 was certified compliant to ES 2.0 in Nov 2019, and
-ANGLE 2.1.0.f18ff947360d to ES 3.0 in Feb 2020.
</del><span class="cx"> ANGLE also provides an implementation of the EGL 1.4 specification.
</span><span class="cx"> 
</span><span class="cx"> ANGLE is used as the default WebGL backend for both Google Chrome and Mozilla Firefox on Windows
</span><span class="lines">@@ -41,8 +39,8 @@
</span><span class="cx"> the browsers. Having one shader validator helps to ensure that a consistent set of GLSL ES shaders
</span><span class="cx"> are accepted across browsers and platforms. The shader translator can be used to translate shaders
</span><span class="cx"> to other shading languages, and to optionally apply shader modifications to work around bugs or
</span><del>-quirks in the native graphics drivers. The translator targets Desktop GLSL, Vulkan GLSL, Direct3D
-HLSL, and even ESSL for native GLES2 platforms.
</del><ins>+quirks in the native graphics drivers. The translator targets Desktop GLSL, Direct3D HLSL, and even
+ESSL for native GLES2 platforms.
</ins><span class="cx"> 
</span><span class="cx"> ## Sources
</span><span class="cx"> 
</span><span class="lines">@@ -81,5 +79,4 @@
</span><span class="cx"> * Watch a [short presentation](https://youtu.be/QrIKdjmpmaA) on the Vulkan back-end.
</span><span class="cx"> * Track the [dEQP test conformance](doc/dEQP-Charts.md)
</span><span class="cx"> * Read design docs on the [Vulkan back-end](src/libANGLE/renderer/vulkan/README.md)
</span><del>-* Read about ANGLE's [testing infrastructure](infra/README.md)
</del><span class="cx"> * If you use ANGLE in your own project, we'd love to hear about it!
</span></span></pre></div>
<a id="branchessafari610111branchSourceThirdPartyANGLEandroidangle_apkgni"></a>
<div class="modfile"><h4>Modified: branches/safari-610.1.11-branch/Source/ThirdParty/ANGLE/android/angle_apk.gni (260478 => 260479)</h4>
<pre class="diff"><span>
<span class="info">--- branches/safari-610.1.11-branch/Source/ThirdParty/ANGLE/android/angle_apk.gni    2020-04-22 00:51:48 UTC (rev 260478)
+++ branches/safari-610.1.11-branch/Source/ThirdParty/ANGLE/android/angle_apk.gni       2020-04-22 00:56:30 UTC (rev 260479)
</span><span class="lines">@@ -31,7 +31,9 @@
</span><span class="cx"> 
</span><span class="cx">     android_assets("${invoker.package_name}_assets") {
</span><span class="cx">       disable_compression = true
</span><del>-      sources = [ "src/feature_support_util/a4a_rules.json" ]
</del><ins>+      sources = [
+        "src/feature_support_util/a4a_rules.json",
+      ]
</ins><span class="cx">     }
</span><span class="cx"> 
</span><span class="cx">     android_apk(target_name) {
</span><span class="lines">@@ -40,7 +42,9 @@
</span><span class="cx">       android_manifest_dep = ":$manifest_target_name"
</span><span class="cx">       min_sdk_version = 26
</span><span class="cx">       target_sdk_version = 28
</span><del>-      deps = [ ":${invoker.package_name}_assets" ]
</del><ins>+      deps = [
+        ":${invoker.package_name}_assets",
+      ]
</ins><span class="cx">       if (symbol_level != 0) {
</span><span class="cx">         deps += [ ":compressed_symbols" ]
</span><span class="cx">         if (android_64bit_target_cpu) {
</span></span></pre></div>
<a id="branchessafari610111branchSourceThirdPartyANGLEchangesdiff"></a>
<div class="modfile"><h4>Modified: branches/safari-610.1.11-branch/Source/ThirdParty/ANGLE/changes.diff (260478 => 260479)</h4>
<pre class="diff"><span>
<span class="info">--- branches/safari-610.1.11-branch/Source/ThirdParty/ANGLE/changes.diff     2020-04-22 00:51:48 UTC (rev 260478)
+++ branches/safari-610.1.11-branch/Source/ThirdParty/ANGLE/changes.diff        2020-04-22 00:56:30 UTC (rev 260479)
</span><span class="lines">@@ -1,34 +1,5 @@
</span><del>-diff --git a/include/platform/FeaturesGL.h b/include/platform/FeaturesGL.h
-index 5b36f271f..85947e40f 100644
---- a/include/platform/FeaturesGL.h
-+++ b/include/platform/FeaturesGL.h
-@@ -412,6 +412,12 @@ struct FeaturesGL : FeatureSetBase
-         "Rewrite row major matrices in shaders as column major as a driver bug workaround",
-         &members, "http://anglebug.com/2273"};

-+    // Flush before glBindFramebuffer as a driver bug workaround if necessary.
-+    Feature flushBeforeBindFramebuffer = {
-+        "flush_before_bindframebuffer", FeatureCategory::OpenGLWorkarounds,
-+        "Flush before glBindFramebuffer as a driver bug workaround",
-+        &members, "https://bugs.webkit.org/show_bug.cgi?id=206625"};
-+
-     // Bugs exist in various OpenGL Intel drivers on Windows that produce incorrect
-     // values for GL_COMPRESSED_SRGB_S3TC_DXT1_EXT format. Replace it with
-     // GL_COMPRESSED_SRGB_ALPHA_S3TC_DXT1_EXT as it's the closest option allowed by
-diff --git a/include/platform/Platform.h b/include/platform/Platform.h
-index 131674008..d065c3a9f 100644
---- a/include/platform/Platform.h
-+++ b/include/platform/Platform.h
-@@ -9,6 +9,7 @@
- #ifndef ANGLE_PLATFORM_H
- #define ANGLE_PLATFORM_H

-+#include <stdlib.h>
- #include <stdint.h>
- #include <stdlib.h>
- #include <array>
</del><span class="cx"> diff --git a/src/common/utilities.cpp b/src/common/utilities.cpp
</span><del>-index 0ca967c17..0a6dcc248 100644
</del><ins>+index 87932a53f..83ea168e2 100644
</ins><span class="cx"> --- a/src/common/utilities.cpp
</span><span class="cx"> +++ b/src/common/utilities.cpp
</span><span class="cx"> @@ -6,6 +6,11 @@
</span><span class="lines">@@ -80,7 +51,7 @@
</span><span class="cx">  
</span><span class="cx">     Copyright (C) 1984, 1989-1990, 2000-2015, 2018-2019 Free Software Foundation,
</span><span class="cx"> diff --git a/src/libANGLE/State.cpp b/src/libANGLE/State.cpp
</span><del>-index 452a695c0..10ab5fc17 100644
</del><ins>+index 207bc3997..fa1bd2f16 100644
</ins><span class="cx"> --- a/src/libANGLE/State.cpp
</span><span class="cx"> +++ b/src/libANGLE/State.cpp
</span><span class="cx"> @@ -6,6 +6,9 @@
</span><span class="lines">@@ -93,25 +64,11 @@
</span><span class="cx">  #include "libANGLE/State.h"
</span><span class="cx">  
</span><span class="cx">  #include <string.h>
</span><del>-diff --git a/src/libANGLE/renderer/gl/StateManagerGL.cpp b/src/libANGLE/renderer/gl/StateManagerGL.cpp
-index 5ac1fa648..3f9bc0166 100644
---- a/src/libANGLE/renderer/gl/StateManagerGL.cpp
-+++ b/src/libANGLE/renderer/gl/StateManagerGL.cpp
-@@ -580,6 +580,9 @@ void StateManagerGL::setPixelPackBuffer(const gl::Buffer *pixelBuffer)

- void StateManagerGL::bindFramebuffer(GLenum type, GLuint framebuffer)
- {
-+    if (mFeatures.flushBeforeBindFramebuffer.enabled)
-+        mFunctions->flush();
-+
-     switch (type)
-     {
-         case GL_FRAMEBUFFER:
</del><span class="cx"> diff --git a/src/libANGLE/renderer/gl/cgl/DisplayCGL.mm b/src/libANGLE/renderer/gl/cgl/DisplayCGL.mm
</span><del>-index 226269909..ae90776da 100644
</del><ins>+index 148213933..cd8a6ca6b 100644
</ins><span class="cx"> --- a/src/libANGLE/renderer/gl/cgl/DisplayCGL.mm
</span><span class="cx"> +++ b/src/libANGLE/renderer/gl/cgl/DisplayCGL.mm
</span><del>-@@ -294,7 +294,7 @@ egl::Error DisplayCGL::restoreLostDevice(const egl::Display *display)
</del><ins>+@@ -292,7 +292,7 @@ egl::Error DisplayCGL::restoreLostDevice(const egl::Display *display)
</ins><span class="cx">  
</span><span class="cx">  bool DisplayCGL::isValidNativeWindow(EGLNativeWindowType window) const
</span><span class="cx">  {
</span><span class="lines">@@ -134,7 +91,7 @@
</span><span class="cx">        mFunctions(renderer->getFunctions()),
</span><span class="cx">        mStateManager(renderer->getStateManager()),
</span><span class="cx"> diff --git a/src/libANGLE/renderer/gl/eagl/DisplayEAGL.mm b/src/libANGLE/renderer/gl/eagl/DisplayEAGL.mm
</span><del>-index 29e83871c..85804411d 100644
</del><ins>+index 552285160..797d3b75c 100644
</ins><span class="cx"> --- a/src/libANGLE/renderer/gl/eagl/DisplayEAGL.mm
</span><span class="cx"> +++ b/src/libANGLE/renderer/gl/eagl/DisplayEAGL.mm
</span><span class="cx"> @@ -107,6 +107,7 @@ void DisplayEAGL::terminate()
</span><span class="lines">@@ -145,7 +102,7 @@
</span><span class="cx">          mContext = nullptr;
</span><span class="cx">      }
</span><span class="cx">  }
</span><del>-@@ -243,7 +244,7 @@ egl::Error DisplayEAGL::restoreLostDevice(const egl::Display *display)
</del><ins>+@@ -237,7 +238,7 @@ egl::Error DisplayEAGL::restoreLostDevice(const egl::Display *display)
</ins><span class="cx">  
</span><span class="cx">  bool DisplayEAGL::isValidNativeWindow(EGLNativeWindowType window) const
</span><span class="cx">  {
</span><span class="lines">@@ -154,7 +111,7 @@
</span><span class="cx">      return [layer isKindOfClass:[CALayer class]];
</span><span class="cx">  }
</span><span class="cx">  
</span><del>-@@ -334,6 +335,7 @@ WorkerContextEAGL::WorkerContextEAGL(EAGLContextObj context) : mContext(context)
</del><ins>+@@ -328,6 +329,7 @@ WorkerContextEAGL::WorkerContextEAGL(EAGLContextObj context) : mContext(context)
</ins><span class="cx">  WorkerContextEAGL::~WorkerContextEAGL()
</span><span class="cx">  {
</span><span class="cx">      [EAGLContext setCurrentContext:nil];
</span><span class="lines">@@ -183,2609 +140,9801 @@
</span><span class="cx">          mSwapLayer = nil;
</span><span class="cx">      }
</span><span class="cx">  
</span><del>-diff --git a/src/libANGLE/renderer/gl/renderergl_utils.cpp b/src/libANGLE/renderer/gl/renderergl_utils.cpp
-index 4ec99bcea..6a250db85 100644
---- a/src/libANGLE/renderer/gl/renderergl_utils.cpp
-+++ b/src/libANGLE/renderer/gl/renderergl_utils.cpp
-@@ -1615,7 +1615,9 @@ void InitializeFeatures(const FunctionsGL *functions, angle::FeaturesGL *feature
-     bool limitMaxTextureSize = isIntel && IsLinux() && GetLinuxOSVersion() < OSVersion(5, 0, 0);
-     ANGLE_FEATURE_CONDITION(features, limitMaxTextureSizeTo4096,
-                             IsAndroid() || limitMaxTextureSize);
--    ANGLE_FEATURE_CONDITION(features, limitMaxMSAASamplesTo4, IsAndroid());
-+    // On Apple switchable graphics, GL_MAX_SAMPLES may differ between the GPUs.
-+    // 4 is a lowest common denominator that is always supported.
-+    ANGLE_FEATURE_CONDITION(features, limitMaxMSAASamplesTo4, IsAndroid() || (IsApple() && (isIntel || isAMD || isNvidia)));
-     ANGLE_FEATURE_CONDITION(features, limitMax3dArrayTextureSizeTo1024, limitMaxTextureSize);
</del><ins>+diff --git a/Source/ThirdParty/ANGLE/src/tests/perf_tests/glmark2Benchmark.cpp b/Source/ThirdParty/ANGLE/src/tests/perf_tests/glmark2Benchmark.cpp
+deleted file mode 100644
+index 174fcc6735a..00000000000
+--- a/Source/ThirdParty/ANGLE/src/tests/perf_tests/glmark2Benchmark.cpp
++++ /dev/null
+@@ -1,285 +0,0 @@
+-//
+-// Copyright 2019 The ANGLE Project Authors. All rights reserved.
+-// Use of this source code is governed by a BSD-style license that can be
+-// found in the LICENSE file.
+-//
+-// glmark2Benchmark:
+-//   Runs the glmark2 benchmark.
+-//
+-
+-#include <gtest/gtest.h>
+-
+-#include <stdio.h>
+-#include <sstream>
+-
+-#include "../perf_tests/third_party/perf/perf_result_reporter.h"
+-#include "ANGLEPerfTestArgs.h"
+-#include "common/platform.h"
+-#include "common/system_utils.h"
+-#include "test_utils/angle_test_configs.h"
+-#include "test_utils/angle_test_instantiate.h"
+-#include "util/test_utils.h"
+-
+-using namespace angle;
+-
+-namespace
+-{
+-
+-struct BenchmarkInfo
+-{
+-    const char *glmark2Config;
+-    const char *name;
+-};
+-
+-// Each glmark2 scene is individually benchmarked.  If glmark2 is run without a specific benchmark,
+-// it can produce an aggregate score, which is not interesting at the moment.  Adding an empty
+-// string ("") to this list will enable a test where glmark2 is run with the default scenes and the
+-// score for each test as well as the overall score is output.
+-constexpr BenchmarkInfo kBenchmarks[] = {
+-    {"build:use-vbo=false", "build"},
+-    {"build:use-vbo=true", "build_vbo"},
+-    {"texture:texture-filter=nearest", "texture_nearest"},
+-    {"texture:texture-filter=linear", "texture_linear"},
+-    {"texture:texture-filter=mipmap", "texture_mipmap"},
+-    {"shading:shading=gouraud", "shading_gouraud"},
+-    {"shading:shading=blinn-phong-inf", "shading_blinn_phong"},
+-    {"shading:shading=phong", "shading_phong"},
+-    {"shading:shading=cel", "shading_cel"},
+-    {"bump:bump-render=high-poly", "bump_high_poly"},
+-    {"bump:bump-render=normals", "bump_normals"},
+-    {"bump:bump-render=height", "bump_height"},
+-    {"effect2d:kernel=0,1,0;1,-4,1;0,1,0;", "effect2d_edge"},
+-    {"effect2d:kernel=1,1,1,1,1;1,1,1,1,1;1,1,1,1,1;", "effect2d_blur"},
+-    {"pulsar:light=false:quads=5:texture=false", "pulsar"},
+-    {"desktop:blur-radius=5:effect=blur:passes=1:separable=true:windows=4", "desktop_blur"},
+-    {"desktop:effect=shadow:windows=4", "desktop_shadow"},
+-    {"buffer:columns=200:interleave=false:update-dispersion=0.9:update-fraction=0.5:update-method="
+-     "map",
+-     "buffer_map"},
+-    {"buffer:columns=200:interleave=false:update-dispersion=0.9:update-fraction=0.5:update-method="
+-     "subdata",
+-     "buffer_subdata"},
+-    {"buffer:columns=200:interleave=true:update-dispersion=0.9:update-fraction=0.5:update-method="
+-     "map",
+-     "buffer_map_interleave"},
+-    {"ideas:speed=duration", "ideas"},
+-    {"jellyfish", "jellyfish"},
+-    {"terrain", "terrain"},
+-    {"shadow", "shadow"},
+-    {"refract", "refract"},
+-    {"conditionals:fragment-steps=0:vertex-steps=0", "conditionals"},
+-    {"conditionals:fragment-steps=5:vertex-steps=0", "conditionals_fragment"},
+-    {"conditionals:fragment-steps=0:vertex-steps=5", "conditionals_vertex"},
+-    {"function:fragment-complexity=low:fragment-steps=5", "function"},
+-    {"function:fragment-complexity=medium:fragment-steps=5", "function_complex"},
+-    {"loop:fragment-loop=false:fragment-steps=5:vertex-steps=5", "loop_no_fsloop"},
+-    {"loop:fragment-steps=5:fragment-uniform=false:vertex-steps=5", "loop_no_uniform"},
+-    {"loop:fragment-steps=5:fragment-uniform=true:vertex-steps=5", "loop"},
+-};
+-
+-using GLMark2BenchmarkTestParams = std::tuple<PlatformParameters, size_t>;
+-std::string GLMark2BenchmarkPrint(
+-    const ::testing::TestParamInfo<GLMark2BenchmarkTestParams> &paramsInfo)
+-{
+-    const GLMark2BenchmarkTestParams &params = paramsInfo.param;
+-    std::ostringstream out;
+-
+-    out << std::get<0>(params) << '_';
+-    out << kBenchmarks[std::get<1>(params)].name;
+-
+-    return out.str();
+-}
+-
+-class GLMark2Benchmark : public testing::TestWithParam<GLMark2BenchmarkTestParams>
+-{
+-  public:
+-    GLMark2Benchmark()
+-    {
+-        switch (std::get<0>(GetParam()).getRenderer())
+-        {
+-            case EGL_PLATFORM_ANGLE_TYPE_D3D11_ANGLE:
+-                mBackend = "d3d11";
+-                break;
+-            case EGL_PLATFORM_ANGLE_TYPE_OPENGLES_ANGLE:
+-                mBackend = "gl";
+-                break;
+-            case EGL_PLATFORM_ANGLE_TYPE_VULKAN_ANGLE:
+-                mBackend = "vulkan";
+-                break;
+-            default:
+-                break;
+-        }
+-        std::string story = kBenchmarks[std::get<1>(GetParam())].name;
+-        mReporter = std::make_unique<perf_test::PerfResultReporter>("glmark2_" + mBackend, story);
+-        mReporter->RegisterImportantMetric(".fps", "fps");
+-        mReporter->RegisterImportantMetric(".score", "score");
+-    }
+-
+-    void run()
+-    {
+-        // Only supported on Linux and Windows at the moment.
+-        if (!IsLinux() && !IsWindows())
+-        {
+-            return;
+-        }
+-
+-        const BenchmarkInfo benchmarkInfo = kBenchmarks[std::get<1>(GetParam())];
+-        const char *benchmark             = benchmarkInfo.glmark2Config;
+-        const char *benchmarkName         = benchmarkInfo.name;
+-        bool completeRun                  = benchmark == nullptr || benchmark[0] == '\0';
+-
+-        Optional<std::string> cwd = GetCWD();
+-
+-        // Set the current working directory to the executable's, as the data path of glmark2 is
+-        // set relative to that path.
+-        std::string executableDir = GetExecutableDirectory();
+-        SetCWD(executableDir.c_str());
+-        SetEnvironmentVar("ANGLE_DEFAULT_PLATFORM", mBackend.c_str());
+-
+-        std::vector<const char *> args = {
+-            "glmark2_angle",
+-        };
+-        if (OneFrame())
+-        {
+-            args.push_back("--validate");
+-        }
+-        if (!completeRun)
+-        {
+-            args.push_back("--benchmark");
+-            args.push_back(benchmark);
+-            fprintf(stderr, "Running benchmark: %s\n", benchmark);
+-        }
+-        args.push_back(nullptr);
+-
+-        ProcessHandle process(args, true, false);
+-        ASSERT_TRUE(process && process->started());
+-        ASSERT_TRUE(process->finish());
+-
+-        // Restore the current working directory for the next tests.
+-        if (cwd.valid())
+-        {
+-            SetCWD(cwd.value().c_str());
+-        }
+-
+-        ASSERT_EQ(EXIT_SUCCESS, process->getExitCode());
+-
+-        if (!OneFrame())
+-        {
+-            std::string output = process->getStdout();
+-            parseOutput(output, benchmarkName, completeRun);
+-        }
+-    }
+-
+-  private:
+-    void parseOutput(const std::string &output, const char *benchmarkName, bool completeRun)
+-    {
+-        // Output is in the following format:
+-        //
+-        // =======================================================
+-        //     glmark2 2017.07
+-        // =======================================================
+-        //     OpenGL Information
+-        //     GL_VENDOR:     ...
+-        //     GL_RENDERER:   ...
+-        //     GL_VERSION:    ...
+-        // =======================================================
+-        // [test] config: FPS: uint FrameTime: float ms
+-        // [test] config: Not Supported
+-        // ...
+-        // =======================================================
+-        //                                   glmark2 Score: uint
+-        // =======================================================
+-        //
+-        // This function skips the header, prints one line for each test/config line where there's
+-        // an FPS value, and finally prints the overall score.
+-        std::istringstream glmark2Output(output);
+-        std::string line;
+-
+-        // Expect ==== at the top of the header
+-        std::getline(glmark2Output, line);
+-        ASSERT_EQ('=', line[0]);
+-
+-        // Skip one line
+-        std::getline(glmark2Output, line);
+-
+-        // Expect ==== in the middle of the header
+-        std::getline(glmark2Output, line);
+-        ASSERT_EQ('=', line[0]);
+-
+-        // Skip four lines
+-        std::getline(glmark2Output, line);
+-        std::getline(glmark2Output, line);
+-        std::getline(glmark2Output, line);
+-        std::getline(glmark2Output, line);
+-
+-        // The fourth line is the GL_VERSION.  Expect it to include ANGLE, otherwise we are not
+-        // running against ANGLE.
+-        ASSERT_NE(line.find("ANGLE"), std::string::npos);
+-
+-        // Expect ==== at the bottom of the header
+-        std::getline(glmark2Output, line);
+-        ASSERT_EQ('=', line[0]);
+-
+-        // Read configs until the top of the footer is reached
+-        while (std::getline(glmark2Output, line) && line[0] != '=')
+-        {
+-            // Parse the line
+-            std::istringstream lin(line);
+-
+-            std::string testName, testConfig;
+-            lin >> testName >> testConfig;
+-            EXPECT_TRUE(lin);
+-
+-            std::string fpsTag, frametimeTag;
+-            size_t fps;
+-            float frametime;
+-
+-            lin >> fpsTag >> fps >> frametimeTag >> frametime;
+-
+-            // If the line is not in `FPS: uint FrameTime: Float ms` format, the test is not
+-            // supported.  It will be skipped.
+-            if (!lin)
+-            {
+-                continue;
+-            }
+-
+-            EXPECT_EQ("FPS:", fpsTag);
+-            EXPECT_EQ("FrameTime:", frametimeTag);
+-
+-            if (!completeRun)
+-            {
+-                mReporter->AddResult(".fps", fps);
+-            }
+-        }
+-
+-        // Get the score line: `glmark2 Score: uint`
+-        std::string glmark2Tag, scoreTag;
+-        size_t score;
+-        glmark2Output >> glmark2Tag >> scoreTag >> score;
+-        EXPECT_TRUE(glmark2Output);
+-        EXPECT_EQ("glmark2", glmark2Tag);
+-        EXPECT_EQ("Score:", scoreTag);
+-
+-        if (completeRun)
+-        {
+-            mReporter->AddResult(".score", score);
+-        }
+-    }
+-
+-    std::string mBackend = "invalid";
+-    std::unique_ptr<perf_test::PerfResultReporter> mReporter;
+-};
+-
+-TEST_P(GLMark2Benchmark, Run)
+-{
+-    run();
+-}
+-
+-ANGLE_INSTANTIATE_TEST_COMBINE_1(GLMark2Benchmark,
+-                                 GLMark2BenchmarkPrint,
+-                                 testing::Range(static_cast<size_t>(0), ArraySize(kBenchmarks)),
+-                                 ES2_D3D11(),
+-                                 ES2_OPENGLES(),
+-                                 ES2_VULKAN());
+-
+-}  // namespace
+diff --git a/Source/ThirdParty/ANGLE/third_party/glmark2/BUILD.gn b/Source/ThirdParty/ANGLE/third_party/glmark2/BUILD.gn
+deleted file mode 100644
+index 25ae133986a..00000000000
+--- a/Source/ThirdParty/ANGLE/third_party/glmark2/BUILD.gn
++++ /dev/null
+@@ -1,423 +0,0 @@
+-# Copyright 2019 The ANGLE Project Authors. All rights reserved.
+-# Use of this source code is governed by a BSD-style license that can be
+-# found in the LICENSE file.
+-#
+-# Build integration for glmark2.
+-
+-import("../../gni/angle.gni")
+-
+-_glmark2_glad_common_sources = [
+-  "src/src/glad/include/glad/egl.h",
+-  "src/src/glad/include/glad/wgl.h",
+-  "src/src/glad/src/egl.c",
+-]
+-
+-if (is_win) {
+-  _glmark2_glad_common_sources += [ "src/src/glad/src/wgl.c" ]
+-}
+-
+-config("glmark2_glad_config") {
+-  include_dirs = [ "src/src/glad/include" ]
+-}
+-
+-source_set("glmark2_glad_gles") {
+-  sources = _glmark2_glad_common_sources + [
+-              "src/src/glad/include/glad/gles2.h",
+-              "src/src/glad/src/gles2.c",
+-            ]
+-  public_configs = [ ":glmark2_glad_config" ]
+-}
+-
+-source_set("glmark2_glad_gl") {
+-  sources = _glmark2_glad_common_sources + [
+-              "src/src/glad/include/glad/gl.h",
+-              "src/src/glad/src/gl.c",
+-            ]
+-  public_configs = [ ":glmark2_glad_config" ]
+-}
+-
+-glmark_data_path = "${angle_root}/third_party/glmark2/src/data"
+-raw_glmark_data_path = rebase_path(glmark_data_path, root_build_dir)
+-
+-config("glmark2_common_config") {
+-  defines = [ "GLMARK_DATA_PATH=\"${raw_glmark_data_path}\"" ]
+-  include_dirs = [ "src/src" ]
+-  if (is_win) {
+-    include_dirs += [ "src/src/include" ]
+-
+-    # M_PI is nonstandard.
+-    defines += [ "_USE_MATH_DEFINES" ]
+-
+-    if (!is_clang) {
+-      cflags = [
+-        # MSVC warns about the copyright character being illegal.
+-        "/wd4828",
+-
+-        # A warning generated in scene-effect-2d in vec2::calc_offset
+-        "/wd4146",
+-      ]
+-    }
+-  }
+-}
+-
+-config("glmark2_gles_config") {
+-  defines = [ "GLMARK2_USE_GLESv2" ]
+-}
+-
+-config("glmark2_gl_config") {
+-  defines = [ "GLMARK2_USE_GL" ]
+-}
+-
+-group("glmark2_gles") {
+-  public_configs = [
+-    ":glmark2_common_config",
+-    ":glmark2_gles_config",
+-  ]
+-  public_deps = [
+-    ":glmark2_glad_gles",
+-  ]
+-}
+-
+-group("glmark2_gl") {
+-  public_configs = [
+-    ":glmark2_common_config",
+-    ":glmark2_gl_config",
+-  ]
+-  public_deps = [
+-    ":glmark2_glad_gl",
+-  ]
+-}
+-
+-# Supplies compatible headers on Win32.
+-config("glmark2_headers_config") {
+-  if (is_win) {
+-    if (is_clang) {
+-      cflags = [
+-        "-Wno-unused-function",
+-        "-Wno-writable-strings",
+-        "-Wno-extra-tokens",
+-      ]
+-    }
+-  }
+-}
+-
+-source_set("glmark2_headers") {
+-  sources = [
+-    "src/src/canvas.h",
+-    "src/src/gl-headers.h",
+-    "src/src/gl-state-egl.h",
+-    "src/src/gl-state.h",
+-    "src/src/gl-visual-config.h",
+-    "src/src/mesh.h",
+-    "src/src/options.h",
+-    "src/src/scene.h",
+-    "src/src/shared-library.h",
+-    "src/src/texture.h",
+-  ]
+-
+-  if (is_linux) {
+-    sources += [ "src/src/gl-state-glx.h" ]
+-  }
+-  if (is_win) {
+-    sources += [
+-      "src/src/gl-state-wgl.h",
+-      "src/src/include/dirent.h",
+-      "src/src/include/getopt.h",
+-      "src/src/include/sys/time.h",
+-    ]
+-  }
+-  public_configs = [ ":glmark2_headers_config" ]
+-  include_dirs = [ "src/src" ]
+-}
+-
+-config("glmark2_libmatrix_config") {
+-  include_dirs = [ "src/src/libmatrix" ]
+-}
+-
+-template("glmark2_libmatrix") {
+-  source_set(target_name) {
+-    forward_variables_from(invoker, "*")
+-    sources = [
+-      "src/src/libmatrix/gl-if.h",
+-      "src/src/libmatrix/log.cc",
+-      "src/src/libmatrix/log.h",
+-      "src/src/libmatrix/mat.cc",
+-      "src/src/libmatrix/mat.h",
+-      "src/src/libmatrix/program.cc",
+-      "src/src/libmatrix/program.h",
+-      "src/src/libmatrix/shader-source.cc",
+-      "src/src/libmatrix/shader-source.h",
+-      "src/src/libmatrix/stack.h",
+-      "src/src/libmatrix/util.cc",
+-      "src/src/libmatrix/util.h",
+-      "src/src/libmatrix/vec.h",
+-    ]
+-
+-    if (is_clang) {
+-      cflags_cc = [ "-Wno-implicit-fallthrough" ]
+-    }
+-    public_deps = [
+-      ":glmark2_headers",
+-    ]
+-    public_configs = [ ":glmark2_libmatrix_config" ]
+-  }
+-}
+-
+-glmark2_libmatrix("glmark2_libmatrix_gles") {
+-  deps = [
+-    ":glmark2_gles",
+-  ]
+-}
+-
+-glmark2_libmatrix("glmark2_libmatrix_gl") {
+-  deps = [
+-    ":glmark2_gl",
+-  ]
+-}
+-
+-config("glmark2_scene_ideas_config") {
+-  include_dirs = [ "src/src/scene-ideas" ]
+-}
+-
+-template("glmark2_scene_ideas") {
+-  source_set(target_name) {
+-    forward_variables_from(invoker, "*")
+-    sources = [
+-      "src/src/scene-ideas/a.cc",
+-      "src/src/scene-ideas/characters.h",
+-      "src/src/scene-ideas/d.cc",
+-      "src/src/scene-ideas/e.cc",
+-      "src/src/scene-ideas/i.cc",
+-      "src/src/scene-ideas/lamp.cc",
+-      "src/src/scene-ideas/lamp.h",
+-      "src/src/scene-ideas/logo.cc",
+-      "src/src/scene-ideas/logo.h",
+-      "src/src/scene-ideas/m.cc",
+-      "src/src/scene-ideas/n.cc",
+-      "src/src/scene-ideas/o.cc",
+-      "src/src/scene-ideas/s.cc",
+-      "src/src/scene-ideas/splines.cc",
+-      "src/src/scene-ideas/splines.h",
+-      "src/src/scene-ideas/t.cc",
+-      "src/src/scene-ideas/table.cc",
+-      "src/src/scene-ideas/table.h",
+-    ]
+-    public_configs = [ ":glmark2_scene_ideas_config" ]
+-  }
+-}
+-
+-glmark2_scene_ideas("glmark2_scene_ideas_gles") {
+-  deps = [
+-    ":glmark2_gles",
+-    ":glmark2_libmatrix_gles",
+-  ]
+-}
+-
+-glmark2_scene_ideas("glmark2_scene_ideas_gl") {
+-  deps = [
+-    ":glmark2_gl",
+-    ":glmark2_libmatrix_gl",
+-  ]
+-}
+-
+-config("glmark2_scene_terrain_config") {
+-  include_dirs = [ "src/src/scene-terrain" ]
+-}
+-
+-template("glmark2_scene_terrain") {
+-  source_set(target_name) {
+-    forward_variables_from(invoker, "*")
+-    sources = [
+-      "src/src/scene-terrain/base-renderer.cpp",
+-      "src/src/scene-terrain/blur-renderer.cpp",
+-      "src/src/scene-terrain/copy-renderer.cpp",
+-      "src/src/scene-terrain/luminance-renderer.cpp",
+-      "src/src/scene-terrain/normal-from-height-renderer.cpp",
+-      "src/src/scene-terrain/overlay-renderer.cpp",
+-      "src/src/scene-terrain/renderer-chain.cpp",
+-      "src/src/scene-terrain/renderer.h",
+-      "src/src/scene-terrain/simplex-noise-renderer.cpp",
+-      "src/src/scene-terrain/terrain-renderer.cpp",
+-      "src/src/scene-terrain/texture-renderer.cpp",
+-    ]
+-
+-    public_configs = [ ":glmark2_scene_terrain_config" ]
+-  }
+-}
+-
+-glmark2_scene_terrain("glmark2_scene_terrain_gles") {
+-  deps = [
+-    ":glmark2_gles",
+-    ":glmark2_libmatrix_gles",
+-  ]
+-}
+-
+-glmark2_scene_terrain("glmark2_scene_terrain_gl") {
+-  deps = [
+-    ":glmark2_gl",
+-    ":glmark2_libmatrix_gl",
+-  ]
+-}
+-
+-template("glmark2_common") {
+-  source_set(target_name) {
+-    forward_variables_from(invoker, "*")
+-    sources = [
+-      "src/src/benchmark-collection.cpp",
+-      "src/src/benchmark-collection.h",
+-      "src/src/benchmark.cpp",
+-      "src/src/benchmark.h",
+-      "src/src/default-benchmarks.h",
+-      "src/src/gl-headers.cpp",
+-      "src/src/gl-visual-config.cpp",
+-      "src/src/gl-visual-config.h",
+-      "src/src/image-reader.cpp",
+-      "src/src/image-reader.h",
+-      "src/src/main-loop.cpp",
+-      "src/src/main-loop.h",
+-      "src/src/mesh.cpp",
+-      "src/src/model.cpp",
+-      "src/src/model.h",
+-      "src/src/native-state.h",
+-      "src/src/options.cpp",
+-      "src/src/scene-buffer.cpp",
+-      "src/src/scene-build.cpp",
+-      "src/src/scene-bump.cpp",
+-      "src/src/scene-clear.cpp",
+-      "src/src/scene-collection.h",
+-      "src/src/scene-conditionals.cpp",
+-      "src/src/scene-default-options.cpp",
+-      "src/src/scene-desktop.cpp",
+-      "src/src/scene-effect-2d.cpp",
+-      "src/src/scene-function.cpp",
+-      "src/src/scene-grid.cpp",
+-      "src/src/scene-ideas.cpp",
+-      "src/src/scene-jellyfish.cpp",
+-      "src/src/scene-jellyfish.h",
+-      "src/src/scene-loop.cpp",
+-      "src/src/scene-pulsar.cpp",
+-      "src/src/scene-refract.cpp",
+-      "src/src/scene-refract.h",
+-      "src/src/scene-shading.cpp",
+-      "src/src/scene-shadow.cpp",
+-      "src/src/scene-terrain.cpp",
+-      "src/src/scene-texture.cpp",
+-      "src/src/scene.cpp",
+-      "src/src/shared-library.cpp",
+-      "src/src/text-renderer.cpp",
+-      "src/src/text-renderer.h",
+-      "src/src/texture.cpp",
+-    ]
+-
+-    public_deps += [
+-      ":glmark2_headers",
+-      "${angle_libpng_dir}:libpng",
+-      "${angle_root}/third_party:jpeg",
+-    ]
+-  }
+-}
+-
+-glmark2_common("glmark2_common_gles") {
+-  public_deps = [
+-    ":glmark2_gles",
+-    ":glmark2_libmatrix_gles",
+-    ":glmark2_scene_ideas_gles",
+-    ":glmark2_scene_terrain_gles",
+-  ]
+-}
+-
+-glmark2_common("glmark2_common_gl") {
+-  public_deps = [
+-    ":glmark2_gl",
+-    ":glmark2_libmatrix_gl",
+-    ":glmark2_scene_ideas_gl",
+-    ":glmark2_scene_terrain_gl",
+-  ]
+-}
+-
+-glmark2_version = "2017.07"
+-
+-template("glmark2_exe") {
+-  executable(target_name) {
+-    forward_variables_from(invoker, "*")
+-    sources += [
+-      "src/src/canvas-generic.cpp",
+-      "src/src/canvas-generic.h",
+-      "src/src/main.cpp",
+-    ]
+-    data = [
+-      "src/data/",
+-    ]
+-
+-    defines += [ "GLMARK_VERSION=\"${glmark2_version}\"" ]
+-
+-    if (is_win) {
+-      defines += [ "GLMARK2_USE_WIN32" ]
+-      sources += [
+-        "src/src/native-state-win32.cpp",
+-        "src/src/native-state-win32.h",
+-      ]
+-    }
+-    if (is_linux) {
+-      defines += [ "GLMARK2_USE_X11" ]
+-      sources += [
+-        "src/src/native-state-x11.cpp",
+-        "src/src/native-state-x11.h",
+-      ]
+-      libs = [ "X11" ]
+-    }
+-  }
+-}
+-
+-glmark2_exe("glmark2_angle") {
+-  sources = [
+-    "src/src/gl-state-egl.cpp",
+-  ]
+-  deps = [
+-    ":glmark2_common_gles",
+-  ]
+-  data_deps = [
+-    "${angle_root}:libEGL",
+-    "${angle_root}:libGLESv2",
+-  ]
+-
+-  defines = [
+-    "EGL_EGL_PROTOTYPES=1",
+-    "GLMARK2_USE_EGL",
+-  ]
+-
+-  if (is_linux && !is_component_build) {
+-    # Set rpath to find shared libs in a non-component build.
+-    public_configs = [ "//build/config/gcc:rpath_for_built_shared_libraries" ]
+-  }
+-}
+-
+-if (is_linux) {
+-  glmark2_exe("glmark2_glx") {
+-    sources = [
+-      "src/src/gl-state-glx.cpp",
+-      "src/src/glad/include/glad/glx.h",
+-      "src/src/glad/src/glx.c",
+-    ]
+-    deps = [
+-      ":glmark2_common_gl",
+-    ]
+-
+-    defines = [ "GLMARK2_USE_GLX" ]
+-  }
+-}
+-
+-# opengl32.lib/opengl32.dll are not available on Windows ARM64.
+-if (is_win && target_cpu != "arm64") {
+-  glmark2_exe("glmark2_wgl") {
+-    sources = [
+-      "src/src/gl-state-wgl.cpp",
+-    ]
+-    deps = [
+-      ":glmark2_common_gl",
+-    ]
+-
+-    libs = [ "opengl32.lib" ]
+-    defines = [ "GLMARK2_USE_WGL" ]
+-  }
+-}
+diff --git a/Source/ThirdParty/ANGLE/third_party/glmark2/README.angle b/Source/ThirdParty/ANGLE/third_party/glmark2/README.angle
+deleted file mode 100644
+index a2b6371fed8..00000000000
+--- a/Source/ThirdParty/ANGLE/third_party/glmark2/README.angle
++++ /dev/null
+@@ -1,12 +0,0 @@
+-Name: glmark2
+-Short Name: glmark2
+-URL: https://github.com/glmark2/glmark2
+-Security Critical: no
+-License: GPL v3
+-License File: NOT_SHIPPED
+-
+-Description:
+-glmark2 is an OpenGL 2.0 and ES 2.0 benchmark.
+-
+-glmark2 is developed by Alexandros Frantzis and Jesse Barker based on the
+-original glmark benchmark by Ben Smith.
+diff --git a/Source/ThirdParty/ANGLE/tools/flex-bison/README.md b/Source/ThirdParty/ANGLE/tools/flex-bison/README.md
+deleted file mode 100644
+index 8dfe1262660..00000000000
+--- a/Source/ThirdParty/ANGLE/tools/flex-bison/README.md
++++ /dev/null
+@@ -1,129 +0,0 @@
+-# flex and bison binaries
+-
+-This folder contains the flex and bison binaries. We use these binaries to
+-generate the ANGLE translator's lexer and parser.
+-
+-Use the script [`update_flex_bison_binaries.py`](update_flex_bison_binaries.py)
+-to update the versions of these binaries in cloud storage. It must be run on
+-Linux or Windows. It will update the SHAs for your platform. After running the
+-script run `git commit` and then `git cl upload` to code review using the normal
+-review process. You will also want to run
+-[`scripts/run_code_generation.py`](../../scripts/run_code_generation.py) to
+-update the generated files.
+-
+-Please update both Windows and Linux binaries at the same time. Use two CLs. One
+-for each platform. Note that we don't currently support Mac for generating the
+-lexer and parser files. If we do we should add a flex/bison download for Mac as
+-well.
+-
+-Contact jmadill or syoussefi for any help with updating the binaries.
+-
+-## Updating flex and bison binaries
+-
+-This is expected to be a rare operation, and is currently done based on the
+-following instructions.  Note: get the binaries first on windows, as only a
+-single option is available, then build the binaries for the same version on
+-Linux.
+-
+-### On Windows
+-
+-Install MSys2 (x86_64) from http://www.msys2.org/ on Windows.  `flex` should
+-already be installed.  Install bison:
+-
+-```
+-$ pacman -S bison
+-```
+-
+-Note the versions of flex and bison so the same versions can be build on Linux.
+-For example:
+-
+-```
+-$ flex --version
+-flex 2.6.4
+-
+-$ bison --version
+-bison (GNU Bison) 3.3.2
+-```
+-
+-The only dependencies from MSys2 should be the following:
+-
+-```
+-msys-intl-8.dll
+-msys-iconv-2.dll
+-msys-2.0.dll
+-```
+-
+-This can be verified with:
+-
+-```
+-$ ldd /usr/bin/flex
+-$ ldd /usr/bin/bison
+-```
+-
+-Additionally, we need the binary for m4 at `/usr/bin/m4`.
+-
+-Copy all these 5 files to this directory:
+-
+-```
+-$ cd angle/
+-$ cp /usr/bin/flex.exe \
+-     /usr/bin/bison.exe \
+-     /usr/bin/m4.exe \
+-     /usr/bin/msys-intl-8.dll \
+-     /usr/bin/msys-iconv-2.dll \
+-     /usr/bin/msys-2.0.dll \
+-     tools/flex-bison/windows/
+-```
+-
+-Upload the binaries:
+-
+-```
+-$ cd angle/
+-$ python tools/flex-bison/update_flex_bison_binaries.py
+-```
+-
+-### On Linux
+-
+-```
+-# Get the source of flex
+-$ git clone https://github.com/westes/flex.git
+-$ cd flex/
+-# Checkout the same version as msys2 on windows
+-$ git checkout v2.6.4
+-# Build
+-$ autoreconf -i
+-$ mkdir build && cd build
+-$ ../configure CFLAGS="-O2 -D_GNU_SOURCE"
+-$ make -j
+-```
+-
+-```
+-# Get the source of bison
+-$ curl http://ftp.gnu.org/gnu/bison/bison-3.3.2.tar.xz | tar -xJ
+-$ cd bison-3.3.2
+-# Build
+-$ mkdir build && cd build
+-$ ../configure CFLAGS="-O2"
+-$ make -j
+-```
+-
+-Note: Bison's [home page][Bison] lists ftp server and other mirrors.  If the
+-above link is broken, replace with a mirror.
+-
+-Copy the 2 executables to this directory:
+-
+-```
+-$ cd angle/
+-$ cp /path/to/flex/build/src/flex \
+-     /path/to/bison/build/src/bison \
+-     tools/flex-bison/linux/
+-```
+-
+-Upload the binaries:
+-
+-```
+-$ cd angle/
+-$ python tools/flex-bison/update_flex_bison_binaries.py
+-```
+-
+-[Bison]: https://www.gnu.org/software/bison/
+diff --git a/Source/ThirdParty/ANGLE/tools/flex-bison/linux/bison.sha1 b/Source/ThirdParty/ANGLE/tools/flex-bison/linux/bison.sha1
+deleted file mode 100644
+index c93d92de419..00000000000
+--- a/Source/ThirdParty/ANGLE/tools/flex-bison/linux/bison.sha1
++++ /dev/null
+@@ -1 +0,0 @@
+-e628b73cd0a767d93e1f94b5a86ce51ca83c99d5
+\ No newline at end of file
+diff --git a/Source/ThirdParty/ANGLE/tools/flex-bison/linux/flex.sha1 b/Source/ThirdParty/ANGLE/tools/flex-bison/linux/flex.sha1
+deleted file mode 100644
+index d340047ca12..00000000000
+--- a/Source/ThirdParty/ANGLE/tools/flex-bison/linux/flex.sha1
++++ /dev/null
+@@ -1 +0,0 @@
+-e830e6c0508d9685876e77304bbe7c4a122c08e8
+\ No newline at end of file
+diff --git a/Source/ThirdParty/ANGLE/tools/flex-bison/third_party/.gitattributes b/Source/ThirdParty/ANGLE/tools/flex-bison/third_party/.gitattributes
+deleted file mode 100644
+index 0688c8a1491..00000000000
+--- a/Source/ThirdParty/ANGLE/tools/flex-bison/third_party/.gitattributes
++++ /dev/null
+@@ -1 +0,0 @@
+-*                    eol=lf
+diff --git a/Source/ThirdParty/ANGLE/tools/flex-bison/third_party/m4sugar/LICENSE b/Source/ThirdParty/ANGLE/tools/flex-bison/third_party/m4sugar/LICENSE
+deleted file mode 100644
+index d511905c164..00000000000
+--- a/Source/ThirdParty/ANGLE/tools/flex-bison/third_party/m4sugar/LICENSE
++++ /dev/null
+@@ -1,339 +0,0 @@
+-                  GNU GENERAL PUBLIC LICENSE
+-                     Version 2, June 1991
+-
+- Copyright (C) 1989, 1991 Free Software Foundation, Inc.,
+- 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+- Everyone is permitted to copy and distribute verbatim copies
+- of this license document, but changing it is not allowed.
+-
+-                          Preamble
+-
+-  The licenses for most software are designed to take away your
+-freedom to share and change it.  By contrast, the GNU General Public
+-License is intended to guarantee your freedom to share and change free
+-software--to make sure the software is free for all its users.  This
+-General Public License applies to most of the Free Software
+-Foundation's software and to any other program whose authors commit to
+-using it.  (Some other Free Software Foundation software is covered by
+-the GNU Lesser General Public License instead.)  You can apply it to
+-your programs, too.
+-
+-  When we speak of free software, we are referring to freedom, not
+-price.  Our General Public Licenses are designed to make sure that you
+-have the freedom to distribute copies of free software (and charge for
+-this service if you wish), that you receive source code or can get it
+-if you want it, that you can change the software or use pieces of it
+-in new free programs; and that you know you can do these things.
+-
+-  To protect your rights, we need to make restrictions that forbid
+-anyone to deny you these rights or to ask you to surrender the rights.
+-These restrictions translate to certain responsibilities for you if you
+-distribute copies of the software, or if you modify it.
+-
+-  For example, if you distribute copies of such a program, whether
+-gratis or for a fee, you must give the recipients all the rights that
+-you have.  You must make sure that they, too, receive or can get the
+-source code.  And you must show them these terms so they know their
+-rights.
+-
+-  We protect your rights with two steps: (1) copyright the software, and
+-(2) offer you this license which gives you legal permission to copy,
+-distribute and/or modify the software.
+-
+-  Also, for each author's protection and ours, we want to make certain
+-that everyone understands that there is no warranty for this free
+-software.  If the software is modified by someone else and passed on, we
+-want its recipients to know that what they have is not the original, so
+-that any problems introduced by others will not reflect on the original
+-authors' reputations.
+-
+-  Finally, any free program is threatened constantly by software
+-patents.  We wish to avoid the danger that redistributors of a free
+-program will individually obtain patent licenses, in effect making the
+-program proprietary.  To prevent this, we have made it clear that any
+-patent must be licensed for everyone's free use or not licensed at all.
+-
+-  The precise terms and conditions for copying, distribution and
+-modification follow.
+-
+-                  GNU GENERAL PUBLIC LICENSE
+-   TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
+-
+-  0. This License applies to any program or other work which contains
+-a notice placed by the copyright holder saying it may be distributed
+-under the terms of this General Public License.  The "Program", below,
+-refers to any such program or work, and a "work based on the Program"
+-means either the Program or any derivative work under copyright law:
+-that is to say, a work containing the Program or a portion of it,
+-either verbatim or with modifications and/or translated into another
+-language.  (Hereinafter, translation is included without limitation in
+-the term "modification".)  Each licensee is addressed as "you".
+-
+-Activities other than copying, distribution and modification are not
+-covered by this License; they are outside its scope.  The act of
+-running the Program is not restricted, and the output from the Program
+-is covered only if its contents constitute a work based on the
+-Program (independent of having been made by running the Program).
+-Whether that is true depends on what the Program does.
+-
+-  1. You may copy and distribute verbatim copies of the Program's
+-source code as you receive it, in any medium, provided that you
+-conspicuously and appropriately publish on each copy an appropriate
+-copyright notice and disclaimer of warranty; keep intact all the
+-notices that refer to this License and to the absence of any warranty;
+-and give any other recipients of the Program a copy of this License
+-along with the Program.
+-
+-You may charge a fee for the physical act of transferring a copy, and
+-you may at your option offer warranty protection in exchange for a fee.
+-
+-  2. You may modify your copy or copies of the Program or any portion
+-of it, thus forming a work based on the Program, and copy and
+-distribute such modifications or work under the terms of Section 1
+-above, provided that you also meet all of these conditions:
+-
+-    a) You must cause the modified files to carry prominent notices
+-    stating that you changed the files and the date of any change.
+-
+-    b) You must cause any work that you distribute or publish, that in
+-    whole or in part contains or is derived from the Program or any
+-    part thereof, to be licensed as a whole at no charge to all third
+-    parties under the terms of this License.
+-
+-    c) If the modified program normally reads commands interactively
+-    when run, you must cause it, when started running for such
+-    interactive use in the most ordinary way, to print or display an
+-    announcement including an appropriate copyright notice and a
+-    notice that there is no warranty (or else, saying that you provide
+-    a warranty) and that users may redistribute the program under
+-    these conditions, and telling the user how to view a copy of this
+-    License.  (Exception: if the Program itself is interactive but
+-    does not normally print such an announcement, your work based on
+-    the Program is not required to print an announcement.)
+-
+-These requirements apply to the modified work as a whole.  If
+-identifiable sections of that work are not derived from the Program,
+-and can be reasonably considered independent and separate works in
+-themselves, then this License, and its terms, do not apply to those
+-sections when you distribute them as separate works.  But when you
+-distribute the same sections as part of a whole which is a work based
+-on the Program, the distribution of the whole must be on the terms of
+-this License, whose permissions for other licensees extend to the
+-entire whole, and thus to each and every part regardless of who wrote it.
+-
+-Thus, it is not the intent of this section to claim rights or contest
+-your rights to work written entirely by you; rather, the intent is to
+-exercise the right to control the distribution of derivative or
+-collective works based on the Program.
+-
+-In addition, mere aggregation of another work not based on the Program
+-with the Program (or with a work based on the Program) on a volume of
+-a storage or distribution medium does not bring the other work under
+-the scope of this License.
+-
+-  3. You may copy and distribute the Program (or a work based on it,
+-under Section 2) in object code or executable form under the terms of
+-Sections 1 and 2 above provided that you also do one of the following:
+-
+-    a) Accompany it with the complete corresponding machine-readable
+-    source code, which must be distributed under the terms of Sections
+-    1 and 2 above on a medium customarily used for software interchange; or,
+-
+-    b) Accompany it with a written offer, valid for at least three
+-    years, to give any third party, for a charge no more than your
+-    cost of physically performing source distribution, a complete
+-    machine-readable copy of the corresponding source code, to be
+-    distributed under the terms of Sections 1 and 2 above on a medium
+-    customarily used for software interchange; or,
+-
+-    c) Accompany it with the information you received as to the offer
+-    to distribute corresponding source code.  (This alternative is
+-    allowed only for noncommercial distribution and only if you
+-    received the program in object code or executable form with such
+-    an offer, in accord with Subsection b above.)
+-
+-The source code for a work means the preferred form of the work for
+-making modifications to it.  For an executable work, complete source
+-code means all the source code for all modules it contains, plus any
+-associated interface definition files, plus the scripts used to
+-control compilation and installation of the executable.  However, as a
+-special exception, the source code distributed need not include
+-anything that is normally distributed (in either source or binary
+-form) with the major components (compiler, kernel, and so on) of the
+-operating system on which the executable runs, unless that component
+-itself accompanies the executable.
+-
+-If distribution of executable or object code is made by offering
+-access to copy from a designated place, then offering equivalent
+-access to copy the source code from the same place counts as
+-distribution of the source code, even though third parties are not
+-compelled to copy the source along with the object code.
+-
+-  4. You may not copy, modify, sublicense, or distribute the Program
+-except as expressly provided under this License.  Any attempt
+-otherwise to copy, modify, sublicense or distribute the Program is
+-void, and will automatically terminate your rights under this License.
+-However, parties who have received copies, or rights, from you under
+-this License will not have their licenses terminated so long as such
+-parties remain in full compliance.
+-
+-  5. You are not required to accept this License, since you have not
+-signed it.  However, nothing else grants you permission to modify or
+-distribute the Program or its derivative works.  These actions are
+-prohibited by law if you do not accept this License.  Therefore, by
+-modifying or distributing the Program (or any work based on the
+-Program), you indicate your acceptance of this License to do so, and
+-all its terms and conditions for copying, distributing or modifying
+-the Program or works based on it.
+-
+-  6. Each time you redistribute the Program (or any work based on the
+-Program), the recipient automatically receives a license from the
+-original licensor to copy, distribute or modify the Program subject to
+-these terms and conditions.  You may not impose any further
+-restrictions on the recipients' exercise of the rights granted herein.
+-You are not responsible for enforcing compliance by third parties to
+-this License.
+-
+-  7. If, as a consequence of a court judgment or allegation of patent
+-infringement or for any other reason (not limited to patent issues),
+-conditions are imposed on you (whether by court order, agreement or
+-otherwise) that contradict the conditions of this License, they do not
+-excuse you from the conditions of this License.  If you cannot
+-distribute so as to satisfy simultaneously your obligations under this
+-License and any other pertinent obligations, then as a consequence you
+-may not distribute the Program at all.  For example, if a patent
+-license would not permit royalty-free redistribution of the Program by
+-all those who receive copies directly or indirectly through you, then
+-the only way you could satisfy both it and this License would be to
+-refrain entirely from distribution of the Program.
+-
+-If any portion of this section is held invalid or unenforceable under
+-any particular circumstance, the balance of the section is intended to
+-apply and the section as a whole is intended to apply in other
+-circumstances.
+-
+-It is not the purpose of this section to induce you to infringe any
+-patents or other property right claims or to contest validity of any
+-such claims; this section has the sole purpose of protecting the
+-integrity of the free software distribution system, which is
+-implemented by public license practices.  Many people have made
+-generous contributions to the wide range of software distributed
+-through that system in reliance on consistent application of that
+-system; it is up to the author/donor to decide if he or she is willing
+-to distribute software through any other system and a licensee cannot
+-impose that choice.
+-
+-This section is intended to make thoroughly clear what is believed to
+-be a consequence of the rest of this License.
+-
+-  8. If the distribution and/or use of the Program is restricted in
+-certain countries either by patents or by copyrighted interfaces, the
+-original copyright holder who places the Program under this License
+-may add an explicit geographical distribution limitation excluding
+-those countries, so that distribution is permitted only in or among
+-countries not thus excluded.  In such case, this License incorporates
+-the limitation as if written in the body of this License.
+-
+-  9. The Free Software Foundation may publish revised and/or new versions
+-of the General Public License from time to time.  Such new versions will
+-be similar in spirit to the present version, but may differ in detail to
+-address new problems or concerns.
+-
+-Each version is given a distinguishing version number.  If the Program
+-specifies a version number of this License which applies to it and "any
+-later version", you have the option of following the terms and conditions
+-either of that version or of any later version published by the Free
+-Software Foundation.  If the Program does not specify a version number of
+-this License, you may choose any version ever published by the Free Software
+-Foundation.
+-
+-  10. If you wish to incorporate parts of the Program into other free
+-programs whose distribution conditions are different, write to the author
+-to ask for permission.  For software which is copyrighted by the Free
+-Software Foundation, write to the Free Software Foundation; we sometimes
+-make exceptions for this.  Our decision will be guided by the two goals
+-of preserving the free status of all derivatives of our free software and
+-of promoting the sharing and reuse of software generally.
+-
+-                          NO WARRANTY
+-
+-  11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY
+-FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW.  EXCEPT WHEN
+-OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES
+-PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED
+-OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+-MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.  THE ENTIRE RISK AS
+-TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU.  SHOULD THE
+-PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING,
+-REPAIR OR CORRECTION.
+-
+-  12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
+-WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR
+-REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES,
+-INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING
+-OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED
+-TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY
+-YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER
+-PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE
+-POSSIBILITY OF SUCH DAMAGES.
+-
+-                   END OF TERMS AND CONDITIONS
+-
+-          How to Apply These Terms to Your New Programs
+-
+-  If you develop a new program, and you want it to be of the greatest
+-possible use to the public, the best way to achieve this is to make it
+-free software which everyone can redistribute and change under these terms.
+-
+-  To do so, attach the following notices to the program.  It is safest
+-to attach them to the start of each source file to most effectively
+-convey the exclusion of warranty; and each file should have at least
+-the "copyright" line and a pointer to where the full notice is found.
+-
+-    <one line to give the program's name and a brief idea of what it does.>
+-    Copyright (C) <year>  <name of author>
+-
+-    This program is free software; you can redistribute it and/or modify
+-    it under the terms of the GNU General Public License as published by
+-    the Free Software Foundation; either version 2 of the License, or
+-    (at your option) any later version.
+-
+-    This program is distributed in the hope that it will be useful,
+-    but WITHOUT ANY WARRANTY; without even the implied warranty of
+-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+-    GNU General Public License for more details.
+-
+-    You should have received a copy of the GNU General Public License along
+-    with this program; if not, write to the Free Software Foundation, Inc.,
+-    51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+-
+-Also add information on how to contact you by electronic and paper mail.
+-
+-If the program is interactive, make it output a short notice like this
+-when it starts in an interactive mode:
+-
+-    Gnomovision version 69, Copyright (C) year name of author
+-    Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+-    This is free software, and you are welcome to redistribute it
+-    under certain conditions; type `show c' for details.
+-
+-The hypothetical commands `show w' and `show c' should show the appropriate
+-parts of the General Public License.  Of course, the commands you use may
+-be called something other than `show w' and `show c'; they could even be
+-mouse-clicks or menu items--whatever suits your program.
+-
+-You should also get your employer (if you work as a programmer) or your
+-school, if any, to sign a "copyright disclaimer" for the program, if
+-necessary.  Here is a sample; alter the names:
+-
+-  Yoyodyne, Inc., hereby disclaims all copyright interest in the program
+-  `Gnomovision' (which makes passes at compilers) written by James Hacker.
+-
+-  <signature of Ty Coon>, 1 April 1989
+-  Ty Coon, President of Vice
+-
+-This General Public License does not permit incorporating your program into
+-proprietary programs.  If your program is a subroutine library, you may
+-consider it more useful to permit linking proprietary applications with the
+-library.  If this is what you want to do, use the GNU Lesser General
+-Public License instead of this License.
+diff --git a/Source/ThirdParty/ANGLE/tools/flex-bison/third_party/m4sugar/README.chromium b/Source/ThirdParty/ANGLE/tools/flex-bison/third_party/m4sugar/README.chromium
+deleted file mode 100644
+index c60a5fd4fdc..00000000000
+--- a/Source/ThirdParty/ANGLE/tools/flex-bison/third_party/m4sugar/README.chromium
++++ /dev/null
+@@ -1,11 +0,0 @@
+-Name: Autoconf M4 macros used by Bison
+-Short Name: m4sugar
+-URL: https://www.gnu.org/software/autoconf/
+-Version: unknown
+-License: GPL
+-License File: LICENSE
+-Security critical: no
+-
+-Description:
+-Bison uses M4 to generate its output, and uses the utility M4 macros in this
+-directory.
+diff --git a/Source/ThirdParty/ANGLE/tools/flex-bison/third_party/m4sugar/foreach.m4 b/Source/ThirdParty/ANGLE/tools/flex-bison/third_party/m4sugar/foreach.m4
+deleted file mode 100644
+index 7093d0fcc4e..00000000000
+--- a/Source/ThirdParty/ANGLE/tools/flex-bison/third_party/m4sugar/foreach.m4
++++ /dev/null
+@@ -1,362 +0,0 @@
+-#                                                  -*- Autoconf -*-
+-# This file is part of Autoconf.
+-# foreach-based replacements for recursive functions.
+-# Speeds up GNU M4 1.4.x by avoiding quadratic $@ recursion, but penalizes
+-# GNU M4 1.6 by requiring more memory and macro expansions.
+-#
+-# Copyright (C) 2008-2017 Free Software Foundation, Inc.
+-
+-# This file is part of Autoconf.  This program is free
+-# software; you can redistribute it and/or modify it under the
+-# terms of the GNU General Public License as published by the
+-# Free Software Foundation, either version 3 of the License, or
+-# (at your option) any later version.
+-#
+-# This program is distributed in the hope that it will be useful,
+-# but WITHOUT ANY WARRANTY; without even the implied warranty of
+-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+-# GNU General Public License for more details.
+-#
+-# Under Section 7 of GPL version 3, you are granted additional
+-# permissions described in the Autoconf Configure Script Exception,
+-# version 3.0, as published by the Free Software Foundation.
+-#
+-# You should have received a copy of the GNU General Public License
+-# and a copy of the Autoconf Configure Script Exception along with
+-# this program; see the files COPYINGv3 and COPYING.EXCEPTION
+-# respectively.  If not, see <https://www.gnu.org/licenses/>.
+-
+-# Written by Eric Blake.
+-
+-# In M4 1.4.x, every byte of $@ is rescanned.  This means that an
+-# algorithm on n arguments that recurses with one less argument each
+-# iteration will scan n * (n + 1) / 2 arguments, for O(n^2) time.  In
+-# M4 1.6, this was fixed so that $@ is only scanned once, then
+-# back-references are made to information stored about the scan.
+-# Thus, n iterations need only scan n arguments, for O(n) time.
+-# Additionally, in M4 1.4.x, recursive algorithms did not clean up
+-# memory very well, requiring O(n^2) memory rather than O(n) for n
+-# iterations.
+-#
+-# This file is designed to overcome the quadratic nature of $@
+-# recursion by writing a variant of m4_foreach that uses m4_for rather
+-# than $@ recursion to operate on the list.  This involves more macro
+-# expansions, but avoids the need to rescan a quadratic number of
+-# arguments, making these replacements very attractive for M4 1.4.x.
+-# On the other hand, in any version of M4, expanding additional macros
+-# costs additional time; therefore, in M4 1.6, where $@ recursion uses
+-# fewer macros, these replacements actually pessimize performance.
+-# Additionally, the use of $10 to mean the tenth argument violates
+-# POSIX; although all versions of m4 1.4.x support this meaning, a
+-# future m4 version may switch to take it as the first argument
+-# concatenated with a literal 0, so the implementations in this file
+-# are not future-proof.  Thus, this file is conditionally included as
+-# part of m4_init(), only when it is detected that M4 probably has
+-# quadratic behavior (ie. it lacks the macro __m4_version__).
+-#
+-# Please keep this file in sync with m4sugar.m4.
+-
+-# _m4_foreach(PRE, POST, IGNORED, ARG...)
+-# ---------------------------------------
+-# Form the common basis of the m4_foreach and m4_map macros.  For each
+-# ARG, expand PRE[ARG]POST[].  The IGNORED argument makes recursion
+-# easier, and must be supplied rather than implicit.
+-#
+-# This version minimizes the number of times that $@ is evaluated by
+-# using m4_for to generate a boilerplate into _m4_f then passing $@ to
+-# that temporary macro.  Thus, the recursion is done in m4_for without
+-# reparsing any user input, and is not quadratic.  For an idea of how
+-# this works, note that m4_foreach(i,[1,2],[i]) calls
+-#   _m4_foreach([m4_define([i],],[)i],[],[1],[2])
+-# which defines _m4_f:
+-#   $1[$4]$2[]$1[$5]$2[]_m4_popdef([_m4_f])
+-# then calls _m4_f([m4_define([i],],[)i],[],[1],[2]) for a net result:
+-#   m4_define([i],[1])i[]m4_define([i],[2])i[]_m4_popdef([_m4_f]).
+-m4_define([_m4_foreach],
+-[m4_if([$#], [3], [],
+-       [m4_pushdef([_m4_f], _m4_for([4], [$#], [1],
+-   [$0_([1], [2],], [)])[_m4_popdef([_m4_f])])_m4_f($@)])])
+-
+-m4_define([_m4_foreach_],
+-[[$$1[$$3]$$2[]]])
+-
+-# m4_case(SWITCH, VAL1, IF-VAL1, VAL2, IF-VAL2, ..., DEFAULT)
+-# -----------------------------------------------------------
+-# Find the first VAL that SWITCH matches, and expand the corresponding
+-# IF-VAL.  If there are no matches, expand DEFAULT.
+-#
+-# Use m4_for to create a temporary macro in terms of a boilerplate
+-# m4_if with final cleanup.  If $# is even, we have DEFAULT; if it is
+-# odd, then rounding the last $# up in the temporary macro is
+-# harmless.  For example, both m4_case(1,2,3,4,5) and
+-# m4_case(1,2,3,4,5,6) result in the intermediate _m4_case being
+-#   m4_if([$1],[$2],[$3],[$1],[$4],[$5],_m4_popdef([_m4_case])[$6])
+-m4_define([m4_case],
+-[m4_if(m4_eval([$# <= 2]), [1], [$2],
+-[m4_pushdef([_$0], [m4_if(]_m4_for([2], m4_eval([($# - 1) / 2 * 2]), [2],
+-     [_$0_(], [)])[_m4_popdef(
+-       [_$0])]m4_dquote($m4_eval([($# + 1) & ~1]))[)])_$0($@)])])
+-
+-m4_define([_m4_case_],
+-[$0_([1], [$1], m4_incr([$1]))])
+-
+-m4_define([_m4_case__],
+-[[[$$1],[$$2],[$$3],]])
+-
+-# m4_bmatch(SWITCH, RE1, VAL1, RE2, VAL2, ..., DEFAULT)
+-# -----------------------------------------------------
+-# m4 equivalent of
+-#
+-# if (SWITCH =~ RE1)
+-#   VAL1;
+-# elif (SWITCH =~ RE2)
+-#   VAL2;
+-# elif ...
+-#   ...
+-# else
+-#   DEFAULT
+-#
+-# We build the temporary macro _m4_b:
+-#   m4_define([_m4_b], _m4_defn([_m4_bmatch]))_m4_b([$1], [$2], [$3])...
+-#   _m4_b([$1], [$m-1], [$m])_m4_b([], [], [$m+1]_m4_popdef([_m4_b]))
+-# then invoke m4_unquote(_m4_b($@)), for concatenation with later text.
+-m4_define([m4_bmatch],
+-[m4_if([$#], 0, [m4_fatal([$0: too few arguments: $#])],
+-       [$#], 1, [m4_fatal([$0: too few arguments: $#: $1])],
+-       [$#], 2, [$2],
+-       [m4_pushdef([_m4_b], [m4_define([_m4_b],
+-  _m4_defn([_$0]))]_m4_for([3], m4_eval([($# + 1) / 2 * 2 - 1]),
+-  [2], [_$0_(], [)])[_m4_b([], [],]m4_dquote([$]m4_eval(
+-  [($# + 1) / 2 * 2]))[_m4_popdef([_m4_b]))])m4_unquote(_m4_b($@))])])
+-
+-m4_define([_m4_bmatch],
+-[m4_if(m4_bregexp([$1], [$2]), [-1], [], [[$3]m4_define([$0])])])
+-
+-m4_define([_m4_bmatch_],
+-[$0_([1], m4_decr([$1]), [$1])])
+-
+-m4_define([_m4_bmatch__],
+-[[_m4_b([$$1], [$$2], [$$3])]])
+-
+-
+-# m4_cond(TEST1, VAL1, IF-VAL1, TEST2, VAL2, IF-VAL2, ..., [DEFAULT])
+-# -------------------------------------------------------------------
+-# Similar to m4_if, except that each TEST is expanded when encountered.
+-# If the expansion of TESTn matches the string VALn, the result is IF-VALn.
+-# The result is DEFAULT if no tests passed.  This macro allows
+-# short-circuiting of expensive tests, where it pays to arrange quick
+-# filter tests to run first.
+-#
+-# m4_cond already guarantees either 3*n or 3*n + 1 arguments, 1 <= n.
+-# We only have to speed up _m4_cond, by building the temporary _m4_c:
+-#   m4_define([_m4_c], _m4_defn([m4_unquote]))_m4_c([m4_if(($1), [($2)],
+-#   [[$3]m4_define([_m4_c])])])_m4_c([m4_if(($4), [($5)],
+-#   [[$6]m4_define([_m4_c])])])..._m4_c([m4_if(($m-2), [($m-1)],
+-#   [[$m]m4_define([_m4_c])])])_m4_c([[$m+1]]_m4_popdef([_m4_c]))
+-# We invoke m4_unquote(_m4_c($@)), for concatenation with later text.
+-m4_define([_m4_cond],
+-[m4_pushdef([_m4_c], [m4_define([_m4_c],
+-  _m4_defn([m4_unquote]))]_m4_for([2], m4_eval([$# / 3 * 3 - 1]), [3],
+-  [$0_(], [)])[_m4_c(]m4_dquote(m4_dquote(
+-  [$]m4_eval([$# / 3 * 3 + 1])))[_m4_popdef([_m4_c]))])m4_unquote(_m4_c($@))])
+-
+-m4_define([_m4_cond_],
+-[$0_(m4_decr([$1]), [$1], m4_incr([$1]))])
+-
+-m4_define([_m4_cond__],
+-[[_m4_c([m4_if(($$1), [($$2)], [[$$3]m4_define([_m4_c])])])]])
+-
+-# m4_bpatsubsts(STRING, RE1, SUBST1, RE2, SUBST2, ...)
+-# ----------------------------------------------------
+-# m4 equivalent of
+-#
+-#   $_ = STRING;
+-#   s/RE1/SUBST1/g;
+-#   s/RE2/SUBST2/g;
+-#   ...
+-#
+-# m4_bpatsubsts already validated an odd number of arguments; we only
+-# need to speed up _m4_bpatsubsts.  To avoid nesting, we build the
+-# temporary _m4_p:
+-#   m4_define([_m4_p], [$1])m4_define([_m4_p],
+-#   m4_bpatsubst(m4_dquote(_m4_defn([_m4_p])), [$2], [$3]))m4_define([_m4_p],
+-#   m4_bpatsubst(m4_dquote(_m4_defn([_m4_p])), [$4], [$5]))m4_define([_m4_p],...
+-#   m4_bpatsubst(m4_dquote(_m4_defn([_m4_p])), [$m-1], [$m]))m4_unquote(
+-#   _m4_defn([_m4_p])_m4_popdef([_m4_p]))
+-m4_define([_m4_bpatsubsts],
+-[m4_pushdef([_m4_p], [m4_define([_m4_p],
+-  ]m4_dquote([$]1)[)]_m4_for([3], [$#], [2], [$0_(],
+-  [)])[m4_unquote(_m4_defn([_m4_p])_m4_popdef([_m4_p]))])_m4_p($@)])
+-
+-m4_define([_m4_bpatsubsts_],
+-[$0_(m4_decr([$1]), [$1])])
+-
+-m4_define([_m4_bpatsubsts__],
+-[[m4_define([_m4_p],
+-m4_bpatsubst(m4_dquote(_m4_defn([_m4_p])), [$$1], [$$2]))]])
+-
+-# m4_shiftn(N, ...)
+-# -----------------
+-# Returns ... shifted N times.  Useful for recursive "varargs" constructs.
+-#
+-# m4_shiftn already validated arguments; we only need to speed up
+-# _m4_shiftn.  If N is 3, then we build the temporary _m4_s, defined as
+-#   ,[$5],[$6],...,[$m]_m4_popdef([_m4_s])
+-# before calling m4_shift(_m4_s($@)).
+-m4_define([_m4_shiftn],
+-[m4_if(m4_incr([$1]), [$#], [], [m4_pushdef([_m4_s],
+-  _m4_for(m4_eval([$1 + 2]), [$#], [1],
+-  [[,]m4_dquote($], [)])[_m4_popdef([_m4_s])])m4_shift(_m4_s($@))])])
+-
+-# m4_do(STRING, ...)
+-# ------------------
+-# This macro invokes all its arguments (in sequence, of course).  It is
+-# useful for making your macros more structured and readable by dropping
+-# unnecessary dnl's and have the macros indented properly.
+-#
+-# Here, we use the temporary macro _m4_do, defined as
+-#   $1[]$2[]...[]$n[]_m4_popdef([_m4_do])
+-m4_define([m4_do],
+-[m4_if([$#], [0], [],
+-       [m4_pushdef([_$0], _m4_for([1], [$#], [1],
+-                 [$], [[[]]])[_m4_popdef([_$0])])_$0($@)])])
+-
+-# m4_dquote_elt(ARGS)
+-# -------------------
+-# Return ARGS as an unquoted list of double-quoted arguments.
+-#
+-# _m4_foreach to the rescue.
+-m4_define([m4_dquote_elt],
+-[m4_if([$#], [0], [], [[[$1]]_m4_foreach([,m4_dquote(], [)], $@)])])
+-
+-# m4_reverse(ARGS)
+-# ----------------
+-# Output ARGS in reverse order.
+-#
+-# Invoke _m4_r($@) with the temporary _m4_r built as
+-#   [$m], [$m-1], ..., [$2], [$1]_m4_popdef([_m4_r])
+-m4_define([m4_reverse],
+-[m4_if([$#], [0], [], [$#], [1], [[$1]],
+-[m4_pushdef([_m4_r], [[$$#]]_m4_for(m4_decr([$#]), [1], [-1],
+-    [[, ]m4_dquote($], [)])[_m4_popdef([_m4_r])])_m4_r($@)])])
+-
+-
+-# m4_map_args_pair(EXPRESSION, [END-EXPR = EXPRESSION], ARG...)
+-# -------------------------------------------------------------
+-# Perform a pairwise grouping of consecutive ARGs, by expanding
+-# EXPRESSION([ARG1], [ARG2]).  If there are an odd number of ARGs, the
+-# final argument is expanded with END-EXPR([ARGn]).
+-#
+-# Build the temporary macro _m4_map_args_pair, with the $2([$m+1])
+-# only output if $# is odd:
+-#   $1([$3], [$4])[]$1([$5], [$6])[]...$1([$m-1],
+-#   [$m])[]m4_default([$2], [$1])([$m+1])[]_m4_popdef([_m4_map_args_pair])
+-m4_define([m4_map_args_pair],
+-[m4_if([$#], [0], [m4_fatal([$0: too few arguments: $#])],
+-       [$#], [1], [m4_fatal([$0: too few arguments: $#: $1])],
+-       [$#], [2], [],
+-       [$#], [3], [m4_default([$2], [$1])([$3])[]],
+-       [m4_pushdef([_$0], _m4_for([3],
+-   m4_eval([$# / 2 * 2 - 1]), [2], [_$0_(], [)])_$0_end(
+-   [1], [2], [$#])[_m4_popdef([_$0])])_$0($@)])])
+-
+-m4_define([_m4_map_args_pair_],
+-[$0_([1], [$1], m4_incr([$1]))])
+-
+-m4_define([_m4_map_args_pair__],
+-[[$$1([$$2], [$$3])[]]])
+-
+-m4_define([_m4_map_args_pair_end],
+-[m4_if(m4_eval([$3 & 1]), [1], [[m4_default([$$2], [$$1])([$$3])[]]])])
+-
+-# m4_join(SEP, ARG1, ARG2...)
+-# ---------------------------
+-# Produce ARG1SEPARG2...SEPARGn.  Avoid back-to-back SEP when a given ARG
+-# is the empty string.  No expansion is performed on SEP or ARGs.
+-#
+-# Use a self-modifying separator, since we don't know how many
+-# arguments might be skipped before a separator is first printed, but
+-# be careful if the separator contains $.  _m4_foreach to the rescue.
+-m4_define([m4_join],
+-[m4_pushdef([_m4_sep], [m4_define([_m4_sep], _m4_defn([m4_echo]))])]dnl
+-[_m4_foreach([_$0([$1],], [)], $@)_m4_popdef([_m4_sep])])
+-
+-m4_define([_m4_join],
+-[m4_if([$2], [], [], [_m4_sep([$1])[$2]])])
+-
+-# m4_joinall(SEP, ARG1, ARG2...)
+-# ------------------------------
+-# Produce ARG1SEPARG2...SEPARGn.  An empty ARG results in back-to-back SEP.
+-# No expansion is performed on SEP or ARGs.
+-#
+-# A bit easier than m4_join.  _m4_foreach to the rescue.
+-m4_define([m4_joinall],
+-[[$2]m4_if(m4_eval([$# <= 2]), [1], [],
+-         [_m4_foreach([$1], [], m4_shift($@))])])
+-
+-# m4_list_cmp(A, B)
+-# -----------------
+-# Compare the two lists of integer expressions A and B.
+-#
+-# m4_list_cmp takes care of any side effects; we only override
+-# _m4_list_cmp_raw, where we can safely expand lists multiple times.
+-# First, insert padding so that both lists are the same length; the
+-# trailing +0 is necessary to handle a missing list.  Next, create a
+-# temporary macro to perform pairwise comparisons until an inequality
+-# is found.  For example, m4_list_cmp([1], [1,2]) creates _m4_cmp as
+-#   m4_if(m4_eval([($1) != ($3)]), [1], [m4_cmp([$1], [$3])],
+-#         m4_eval([($2) != ($4)]), [1], [m4_cmp([$2], [$4])],
+-#         [0]_m4_popdef([_m4_cmp]))
+-# then calls _m4_cmp([1+0], [0*2], [1], [2+0])
+-m4_define([_m4_list_cmp_raw],
+-[m4_if([$1], [$2], 0,
+-       [_m4_list_cmp($1+0_m4_list_pad(m4_count($1), m4_count($2)),
+-                   $2+0_m4_list_pad(m4_count($2), m4_count($1)))])])
+-
+-m4_define([_m4_list_pad],
+-[m4_if(m4_eval($1 < $2), [1],
+-       [_m4_for(m4_incr([$1]), [$2], [1], [,0*])])])
+-
+-m4_define([_m4_list_cmp],
+-[m4_pushdef([_m4_cmp], [m4_if(]_m4_for(
+-   [1], m4_eval([$# >> 1]), [1], [$0_(], [,]m4_eval([$# >> 1])[)])[
+-      [0]_m4_popdef([_m4_cmp]))])_m4_cmp($@)])
+-
+-m4_define([_m4_list_cmp_],
+-[$0_([$1], m4_eval([$1 + $2]))])
+-
+-m4_define([_m4_list_cmp__],
+-[[m4_eval([($$1) != ($$2)]), [1], [m4_cmp([$$1], [$$2])],
+-]])
+-
+-# m4_max(EXPR, ...)
+-# m4_min(EXPR, ...)
+-# -----------------
+-# Return the decimal value of the maximum (or minimum) in a series of
+-# integer expressions.
+-#
+-# _m4_foreach to the rescue; we only need to replace _m4_minmax.  Here,
+-# we need a temporary macro to track the best answer so far, so that
+-# the foreach expression is tractable.
+-m4_define([_m4_minmax],
+-[m4_pushdef([_m4_best], m4_eval([$2]))_m4_foreach(
+-  [m4_define([_m4_best], $1(_m4_best,], [))], m4_shift($@))]dnl
+-[_m4_best[]_m4_popdef([_m4_best])])
+-
+-# m4_set_add_all(SET, VALUE...)
+-# -----------------------------
+-# Add each VALUE into SET.  This is O(n) in the number of VALUEs, and
+-# can be faster than calling m4_set_add for each VALUE.
+-#
+-# _m4_foreach to the rescue.  If no deletions have occurred, then
+-# avoid the speed penalty of m4_set_add.
+-m4_define([m4_set_add_all],
+-[m4_if([$#], [0], [], [$#], [1], [],
+-       [m4_define([_m4_set_size($1)], m4_eval(m4_set_size([$1])
+-        + m4_len(_m4_foreach(m4_ifdef([_m4_set_cleanup($1)],
+-  [[m4_set_add]], [[_$0]])[([$1],], [)], $@))))])])
+-
+-m4_define([_m4_set_add_all],
+-[m4_ifdef([_m4_set([$1],$2)], [],
+-        [m4_define([_m4_set([$1],$2)],
+-                   [1])m4_pushdef([_m4_set([$1])], [$2])-])])
+diff --git a/Source/ThirdParty/ANGLE/tools/flex-bison/third_party/m4sugar/m4sugar.m4 b/Source/ThirdParty/ANGLE/tools/flex-bison/third_party/m4sugar/m4sugar.m4
+deleted file mode 100644
+index bbd695836a2..00000000000
+--- a/Source/ThirdParty/ANGLE/tools/flex-bison/third_party/m4sugar/m4sugar.m4
++++ /dev/null
+@@ -1,3308 +0,0 @@
+-divert(-1)#                                                  -*- Autoconf -*-
+-# This file is part of Autoconf.
+-# Base M4 layer.
+-# Requires GNU M4.
+-#
+-# Copyright (C) 1999-2017 Free Software Foundation, Inc.
+-
+-# This file is part of Autoconf.  This program is free
+-# software; you can redistribute it and/or modify it under the
+-# terms of the GNU General Public License as published by the
+-# Free Software Foundation, either version 3 of the License, or
+-# (at your option) any later version.
+-#
+-# This program is distributed in the hope that it will be useful,
+-# but WITHOUT ANY WARRANTY; without even the implied warranty of
+-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+-# GNU General Public License for more details.
+-#
+-# Under Section 7 of GPL version 3, you are granted additional
+-# permissions described in the Autoconf Configure Script Exception,
+-# version 3.0, as published by the Free Software Foundation.
+-#
+-# You should have received a copy of the GNU General Public License
+-# and a copy of the Autoconf Configure Script Exception along with
+-# this program; see the files COPYINGv3 and COPYING.EXCEPTION
+-# respectively.  If not, see <https://www.gnu.org/licenses/>.
+-
+-# Written by Akim Demaille.
+-
+-# Set the quotes, whatever the current quoting system.
+-changequote()
+-changequote([, ])
+-
+-# Some old m4's don't support m4exit.  But they provide
+-# equivalent functionality by core dumping because of the
+-# long macros we define.
+-ifdef([__gnu__], ,
+-[errprint(M4sugar requires GNU M4. Install it before installing M4sugar or
+-set the M4 environment variable to its absolute file name.)
+-m4exit(2)])
+-
+-
+-## ------------------------------- ##
+-## 1. Simulate --prefix-builtins.  ##
+-## ------------------------------- ##
+-
+-# m4_define
+-# m4_defn
+-# m4_undefine
+-define([m4_define],   defn([define]))
+-define([m4_defn],     defn([defn]))
+-define([m4_undefine], defn([undefine]))
+-
+-m4_undefine([define])
+-m4_undefine([defn])
+-m4_undefine([undefine])
+-
+-
+-# m4_copy(SRC, DST)
+-# -----------------
+-# Define DST as the definition of SRC.
+-# What's the difference between:
+-# 1. m4_copy([from], [to])
+-# 2. m4_define([to], [from($@)])
+-# Well, obviously 1 is more expensive in space.  Maybe 2 is more expensive
+-# in time, but because of the space cost of 1, it's not that obvious.
+-# Nevertheless, one huge difference is the handling of `$0'.  If `from'
+-# uses `$0', then with 1, `to''s `$0' is `to', while it is `from' in 2.
+-# The user would certainly prefer to see `to'.
+-#
+-# This definition is in effect during m4sugar initialization, when
+-# there are no pushdef stacks; later on, we redefine it to something
+-# more powerful for all other clients to use.
+-m4_define([m4_copy],
+-[m4_define([$2], m4_defn([$1]))])
+-
+-
+-# m4_rename(SRC, DST)
+-# -------------------
+-# Rename the macro SRC to DST.
+-m4_define([m4_rename],
+-[m4_copy([$1], [$2])m4_undefine([$1])])
+-
+-
+-# m4_rename_m4(MACRO-NAME)
+-# ------------------------
+-# Rename MACRO-NAME to m4_MACRO-NAME.
+-m4_define([m4_rename_m4],
+-[m4_rename([$1], [m4_$1])])
+-
+-
+-# m4_copy_unm4(m4_MACRO-NAME)
+-# ---------------------------
+-# Copy m4_MACRO-NAME to MACRO-NAME.
+-m4_define([m4_copy_unm4],
+-[m4_copy([$1], m4_bpatsubst([$1], [^m4_\(.*\)], [[\1]]))])
+-
+-
+-# Some m4 internals have names colliding with tokens we might use.
+-# Rename them a` la `m4 --prefix-builtins'.  Conditionals first, since
+-# some subsequent renames are conditional.
+-m4_rename_m4([ifdef])
+-m4_rename([ifelse], [m4_if])
+-
+-m4_rename_m4([builtin])
+-m4_rename_m4([changecom])
+-m4_rename_m4([changequote])
+-m4_ifdef([changeword],dnl conditionally available in 1.4.x
+-[m4_undefine([changeword])])
+-m4_rename_m4([debugfile])
+-m4_rename_m4([debugmode])
+-m4_rename_m4([decr])
+-m4_rename_m4([divnum])
+-m4_rename_m4([dumpdef])
+-m4_rename_m4([errprint])
+-m4_rename_m4([esyscmd])
+-m4_rename_m4([eval])
+-m4_rename_m4([format])
+-m4_undefine([include])
+-m4_rename_m4([incr])
+-m4_rename_m4([index])
+-m4_rename_m4([indir])
+-m4_rename_m4([len])
+-m4_rename([m4exit], [m4_exit])
+-m4_undefine([m4wrap])
+-m4_ifdef([mkstemp],dnl added in M4 1.4.8
+-[m4_rename_m4([mkstemp])
+-m4_copy([m4_mkstemp], [m4_maketemp])
+-m4_undefine([maketemp])],
+-[m4_rename_m4([maketemp])
+-m4_copy([m4_maketemp], [m4_mkstemp])])
+-m4_rename([patsubst], [m4_bpatsubst])
+-m4_rename_m4([popdef])
+-m4_rename_m4([pushdef])
+-m4_rename([regexp], [m4_bregexp])
+-m4_rename_m4([shift])
+-m4_undefine([sinclude])
+-m4_rename_m4([substr])
+-m4_ifdef([symbols],dnl present only in alpha-quality 1.4o
+-[m4_rename_m4([symbols])])
+-m4_rename_m4([syscmd])
+-m4_rename_m4([sysval])
+-m4_rename_m4([traceoff])
+-m4_rename_m4([traceon])
+-m4_rename_m4([translit])
+-
+-# _m4_defn(ARG)
+-# -------------
+-# _m4_defn is for internal use only - it bypasses the wrapper, so it
+-# must only be used on one argument at a time, and only on macros
+-# known to be defined.  Make sure this still works if the user renames
+-# m4_defn but not _m4_defn.
+-m4_copy([m4_defn], [_m4_defn])
+-
+-# _m4_divert_raw(NUM)
+-# -------------------
+-# _m4_divert_raw is for internal use only.  Use this instead of
+-# m4_builtin([divert], NUM), so that tracing diversion flow is easier.
+-m4_rename([divert], [_m4_divert_raw])
+-
+-# _m4_popdef(ARG...)
+-# ------------------
+-# _m4_popdef is for internal use only - it bypasses the wrapper, so it
+-# must only be used on macros known to be defined.  Make sure this
+-# still works if the user renames m4_popdef but not _m4_popdef.
+-m4_copy([m4_popdef], [_m4_popdef])
+-
+-# _m4_undefine(ARG...)
+-# --------------------
+-# _m4_undefine is for internal use only - it bypasses the wrapper, so
+-# it must only be used on macros known to be defined.  Make sure this
+-# still works if the user renames m4_undefine but not _m4_undefine.
+-m4_copy([m4_undefine], [_m4_undefine])
+-
+-# _m4_undivert(NUM...)
+-# --------------------
+-# _m4_undivert is for internal use only, and should always be given
+-# arguments.  Use this instead of m4_builtin([undivert], NUM...), so
+-# that tracing diversion flow is easier.
+-m4_rename([undivert], [_m4_undivert])
+-
+-
+-## ------------------- ##
+-## 2. Error messages.  ##
+-## ------------------- ##
+-
+-
+-# m4_location
+-# -----------
+-# Output the current file, colon, and the current line number.
+-m4_define([m4_location],
+-[__file__:__line__])
+-
+-
+-# m4_errprintn(MSG)
+-# -----------------
+-# Same as `errprint', but with the missing end of line.
+-m4_define([m4_errprintn],
+-[m4_errprint([$1
+-])])
+-
+-
+-# m4_warning(MSG)
+-# ---------------
+-# Warn the user.
+-m4_define([m4_warning],
+-[m4_errprintn(m4_location[: warning: $1])])
+-
+-
+-# m4_fatal(MSG, [EXIT-STATUS])
+-# ----------------------------
+-# Fatal the user.                                                      :)
+-m4_define([m4_fatal],
+-[m4_errprintn(m4_location[: error: $1]
+-m4_expansion_stack)m4_exit(m4_if([$2],, 1, [$2]))])
+-
+-
+-# m4_assert(EXPRESSION, [EXIT-STATUS = 1])
+-# ----------------------------------------
+-# This macro ensures that EXPRESSION evaluates to true, and exits if
+-# EXPRESSION evaluates to false.
+-m4_define([m4_assert],
+-[m4_if(m4_eval([$1]), 0,
+-       [m4_fatal([assert failed: $1], [$2])])])
+-
+-
+-
+-## ------------- ##
+-## 3. Warnings.  ##
+-## ------------- ##
+-
+-
+-# _m4_warn(CATEGORY, MESSAGE, [STACK-TRACE])
+-# ------------------------------------------
+-# Report a MESSAGE to the user if the CATEGORY of warnings is enabled.
+-# This is for traces only.
+-# If present, STACK-TRACE is a \n-separated list of "LOCATION: MESSAGE",
+-# where the last line (and no other) ends with "the top level".
+-#
+-# Within m4, the macro is a no-op.  This macro really matters
+-# when autom4te post-processes the trace output.
+-m4_define([_m4_warn], [])
+-
+-
+-# m4_warn(CATEGORY, MESSAGE)
+-# --------------------------
+-# Report a MESSAGE to the user if the CATEGORY of warnings is enabled.
+-m4_define([m4_warn],
+-[_m4_warn([$1], [$2],
+-m4_ifdef([_m4_expansion_stack], [m4_expansion_stack]))])
+-
+-
+-
+-## ------------------- ##
+-## 4. File inclusion.  ##
+-## ------------------- ##
+-
+-
+-# We also want to neutralize include (and sinclude for symmetry),
+-# but we want to extend them slightly: warn when a file is included
+-# several times.  This is, in general, a dangerous operation, because
+-# too many people forget to quote the first argument of m4_define.
+-#
+-# For instance in the following case:
+-#   m4_define(foo, [bar])
+-# then a second reading will turn into
+-#   m4_define(bar, [bar])
+-# which is certainly not what was meant.
+-
+-# m4_include_unique(FILE)
+-# -----------------------
+-# Declare that the FILE was loading; and warn if it has already
+-# been included.
+-m4_define([m4_include_unique],
+-[m4_ifdef([m4_include($1)],
+-        [m4_warn([syntax], [file `$1' included several times])])dnl
+-m4_define([m4_include($1)])])
+-
+-
+-# m4_include(FILE)
+-# ----------------
+-# Like the builtin include, but warns against multiple inclusions.
+-m4_define([m4_include],
+-[m4_include_unique([$1])dnl
+-m4_builtin([include], [$1])])
+-
+-
+-# m4_sinclude(FILE)
+-# -----------------
+-# Like the builtin sinclude, but warns against multiple inclusions.
+-m4_define([m4_sinclude],
+-[m4_include_unique([$1])dnl
+-m4_builtin([sinclude], [$1])])
+-
+-
+-
+-## ------------------------------------ ##
+-## 5. Additional branching constructs.  ##
+-## ------------------------------------ ##
+-
+-# Both `m4_ifval' and `m4_ifset' tests against the empty string.  The
+-# difference is that `m4_ifset' is specialized on macros.
+-#
+-# In case of arguments of macros, eg. $1, it makes little difference.
+-# In the case of a macro `FOO', you don't want to check `m4_ifval(FOO,
+-# TRUE)', because if `FOO' expands with commas, there is a shifting of
+-# the arguments.  So you want to run `m4_ifval([FOO])', but then you just
+-# compare the *string* `FOO' against `', which, of course fails.
+-#
+-# So you want the variation `m4_ifset' that expects a macro name as $1.
+-# If this macro is both defined and defined to a non empty value, then
+-# it runs TRUE, etc.
+-
+-
+-# m4_ifblank(COND, [IF-BLANK], [IF-TEXT])
+-# m4_ifnblank(COND, [IF-TEXT], [IF-BLANK])
+-# ----------------------------------------
+-# If COND is empty, or consists only of blanks (space, tab, newline),
+-# then expand IF-BLANK, otherwise expand IF-TEXT.  This differs from
+-# m4_ifval only if COND has just whitespace, but it helps optimize in
+-# spite of users who mistakenly leave trailing space after what they
+-# thought was an empty argument:
+-#   macro(
+-#         []
+-#        )
+-#
+-# Writing one macro in terms of the other causes extra overhead, so
+-# we inline both definitions.
+-m4_define([m4_ifblank],
+-[m4_if(m4_translit([[$1]],  [ ][      ][
+-]), [], [$2], [$3])])
+-
+-m4_define([m4_ifnblank],
+-[m4_if(m4_translit([[$1]],  [ ][      ][
+-]), [], [$3], [$2])])
+-
+-
+-# m4_ifval(COND, [IF-TRUE], [IF-FALSE])
+-# -------------------------------------
+-# If COND is not the empty string, expand IF-TRUE, otherwise IF-FALSE.
+-# Comparable to m4_ifdef.
+-m4_define([m4_ifval],
+-[m4_if([$1], [], [$3], [$2])])
+-
+-
+-# m4_n(TEXT)
+-# ----------
+-# If TEXT is not empty, return TEXT and a new line, otherwise nothing.
+-m4_define([m4_n],
+-[m4_if([$1],
+-       [], [],
+-         [$1
+-])])
+-
+-
+-# m4_ifvaln(COND, [IF-TRUE], [IF-FALSE])
+-# --------------------------------------
+-# Same as `m4_ifval', but add an extra newline to IF-TRUE or IF-FALSE
+-# unless that argument is empty.
+-m4_define([m4_ifvaln],
+-[m4_if([$1],
+-       [],   [m4_n([$3])],
+-           [m4_n([$2])])])
+-
+-
+-# m4_ifset(MACRO, [IF-TRUE], [IF-FALSE])
+-# --------------------------------------
+-# If MACRO has no definition, or of its definition is the empty string,
+-# expand IF-FALSE, otherwise IF-TRUE.
+-m4_define([m4_ifset],
+-[m4_ifdef([$1],
+-        [m4_ifval(_m4_defn([$1]), [$2], [$3])],
+-        [$3])])
+-
+-
+-# m4_ifndef(NAME, [IF-NOT-DEFINED], [IF-DEFINED])
+-# -----------------------------------------------
+-m4_define([m4_ifndef],
+-[m4_ifdef([$1], [$3], [$2])])
+-
+-
+-# m4_case(SWITCH, VAL1, IF-VAL1, VAL2, IF-VAL2, ..., DEFAULT)
+-# -----------------------------------------------------------
+-# m4 equivalent of
+-# switch (SWITCH)
+-# {
+-#   case VAL1:
+-#     IF-VAL1;
+-#     break;
+-#   case VAL2:
+-#     IF-VAL2;
+-#     break;
+-#   ...
+-#   default:
+-#     DEFAULT;
+-#     break;
+-# }.
+-# All the values are optional, and the macro is robust to active
+-# symbols properly quoted.
+-#
+-# Please keep foreach.m4 in sync with any adjustments made here.
+-m4_define([m4_case],
+-[m4_if([$#], 0, [],
+-       [$#], 1, [],
+-       [$#], 2, [$2],
+-       [$1], [$2], [$3],
+-       [$0([$1], m4_shift3($@))])])
+-
+-
+-# m4_bmatch(SWITCH, RE1, VAL1, RE2, VAL2, ..., DEFAULT)
+-# -----------------------------------------------------
+-# m4 equivalent of
+-#
+-# if (SWITCH =~ RE1)
+-#   VAL1;
+-# elif (SWITCH =~ RE2)
+-#   VAL2;
+-# elif ...
+-#   ...
+-# else
+-#   DEFAULT
+-#
+-# All the values are optional, and the macro is robust to active symbols
+-# properly quoted.
+-#
+-# Please keep foreach.m4 in sync with any adjustments made here.
+-m4_define([m4_bmatch],
+-[m4_if([$#], 0, [m4_fatal([$0: too few arguments: $#])],
+-       [$#], 1, [m4_fatal([$0: too few arguments: $#: $1])],
+-       [$#], 2, [$2],
+-       [m4_if(m4_bregexp([$1], [$2]), -1, [$0([$1], m4_shift3($@))],
+-            [$3])])])
+-
+-# m4_argn(N, ARGS...)
+-# -------------------
+-# Extract argument N (greater than 0) from ARGS.  Example:
+-#   m4_define([b], [B])
+-#   m4_argn([2], [a], [b], [c]) => b
+-#
+-# Rather than using m4_car(m4_shiftn([$1], $@)), we exploit the fact that
+-# GNU m4 can directly reference any argument, through an indirect macro.
+-m4_define([m4_argn],
+-[m4_assert([0 < $1])]dnl
+-[m4_pushdef([_$0], [_m4_popdef([_$0])]m4_dquote([$]m4_incr([$1])))_$0($@)])
+-
+-
+-# m4_car(ARGS...)
+-# m4_cdr(ARGS...)
+-# ---------------
+-# Manipulate m4 lists.  m4_car returns the first argument.  m4_cdr
+-# bundles all but the first argument into a quoted list.  These two
+-# macros are generally used with list arguments, with quoting removed
+-# to break the list into multiple m4 ARGS.
+-m4_define([m4_car], [[$1]])
+-m4_define([m4_cdr],
+-[m4_if([$#], 0, [m4_fatal([$0: cannot be called without arguments])],
+-       [$#], 1, [],
+-       [m4_dquote(m4_shift($@))])])
+-
+-# _m4_cdr(ARGS...)
+-# ----------------
+-# Like m4_cdr, except include a leading comma unless only one argument
+-# remains.  Why?  Because comparing a large list against [] is more
+-# expensive in expansion time than comparing the number of arguments; so
+-# _m4_cdr can be used to reduce the number of arguments when it is time
+-# to end recursion.
+-m4_define([_m4_cdr],
+-[m4_if([$#], 1, [],
+-       [, m4_dquote(m4_shift($@))])])
+-
+-
+-
+-# m4_cond(TEST1, VAL1, IF-VAL1, TEST2, VAL2, IF-VAL2, ..., [DEFAULT])
+-# -------------------------------------------------------------------
+-# Similar to m4_if, except that each TEST is expanded when encountered.
+-# If the expansion of TESTn matches the string VALn, the result is IF-VALn.
+-# The result is DEFAULT if no tests passed.  This macro allows
+-# short-circuiting of expensive tests, where it pays to arrange quick
+-# filter tests to run first.
+-#
+-# For an example, consider a previous implementation of _AS_QUOTE_IFELSE:
+-#
+-#    m4_if(m4_index([$1], [\]), [-1], [$2],
+-#          m4_eval(m4_index([$1], [\\]) >= 0), [1], [$2],
+-#          m4_eval(m4_index([$1], [\$]) >= 0), [1], [$2],
+-#          m4_eval(m4_index([$1], [\`]) >= 0), [1], [$3],
+-#          m4_eval(m4_index([$1], [\"]) >= 0), [1], [$3],
+-#          [$2])
+-#
+-# Here, m4_index is computed 5 times, and m4_eval 4, even if $1 contains
+-# no backslash.  It is more efficient to do:
+-#
+-#    m4_cond([m4_index([$1], [\])], [-1], [$2],
+-#            [m4_eval(m4_index([$1], [\\]) >= 0)], [1], [$2],
+-#            [m4_eval(m4_index([$1], [\$]) >= 0)], [1], [$2],
+-#            [m4_eval(m4_index([$1], [\`]) >= 0)], [1], [$3],
+-#            [m4_eval(m4_index([$1], [\"]) >= 0)], [1], [$3],
+-#            [$2])
+-#
+-# In the common case of $1 with no backslash, only one m4_index expansion
+-# occurs, and m4_eval is avoided altogether.
+-#
+-# Please keep foreach.m4 in sync with any adjustments made here.
+-m4_define([m4_cond],
+-[m4_if([$#], [0], [m4_fatal([$0: cannot be called without arguments])],
+-       [$#], [1], [$1],
+-       m4_eval([$# % 3]), [2], [m4_fatal([$0: missing an argument])],
+-       [_$0($@)])])
+-
+-m4_define([_m4_cond],
+-[m4_if(($1), [($2)], [$3],
+-       [$#], [3], [],
+-       [$#], [4], [$4],
+-       [$0(m4_shift3($@))])])
+-
+-
+-## ---------------------------------------- ##
+-## 6. Enhanced version of some primitives.  ##
+-## ---------------------------------------- ##
+-
+-# m4_bpatsubsts(STRING, RE1, SUBST1, RE2, SUBST2, ...)
+-# ----------------------------------------------------
+-# m4 equivalent of
+-#
+-#   $_ = STRING;
+-#   s/RE1/SUBST1/g;
+-#   s/RE2/SUBST2/g;
+-#   ...
+-#
+-# All the values are optional, and the macro is robust to active symbols
+-# properly quoted.
+-#
+-# I would have liked to name this macro `m4_bpatsubst', unfortunately,
+-# due to quotation problems, I need to double quote $1 below, therefore
+-# the anchors are broken :(  I can't let users be trapped by that.
+-#
+-# Recall that m4_shift3 always results in an argument.  Hence, we need
+-# to distinguish between a final deletion vs. ending recursion.
+-#
+-# Please keep foreach.m4 in sync with any adjustments made here.
+-m4_define([m4_bpatsubsts],
+-[m4_if([$#], 0, [m4_fatal([$0: too few arguments: $#])],
+-       [$#], 1, [m4_fatal([$0: too few arguments: $#: $1])],
+-       [$#], 2, [m4_unquote(m4_builtin([patsubst], [[$1]], [$2]))],
+-       [$#], 3, [m4_unquote(m4_builtin([patsubst], [[$1]], [$2], [$3]))],
+-       [_$0($@m4_if(m4_eval($# & 1), 0, [,]))])])
+-m4_define([_m4_bpatsubsts],
+-[m4_if([$#], 2, [$1],
+-       [$0(m4_builtin([patsubst], [[$1]], [$2], [$3]),
+-         m4_shift3($@))])])
+-
+-
+-# m4_copy(SRC, DST)
+-# -----------------
+-# Define the pushdef stack DST as a copy of the pushdef stack SRC;
+-# give an error if DST is already defined.  This is particularly nice
+-# for copying self-modifying pushdef stacks, where the top definition
+-# includes one-shot initialization that is later popped to the normal
+-# definition.  This version intentionally does nothing if SRC is
+-# undefined.
+-#
+-# Some macros simply can't be renamed with this method: namely, anything
+-# involved in the implementation of m4_stack_foreach_sep.
+-m4_define([m4_copy],
+-[m4_ifdef([$2], [m4_fatal([$0: won't overwrite defined macro: $2])],
+-        [m4_stack_foreach_sep([$1], [m4_pushdef([$2],], [)])])]dnl
+-[m4_ifdef([m4_location($1)], [m4_define([m4_location($2)], m4_location)])])
+-
+-
+-# m4_copy_force(SRC, DST)
+-# m4_rename_force(SRC, DST)
+-# -------------------------
+-# Like m4_copy/m4_rename, except blindly overwrite any existing DST.
+-# Note that m4_copy_force tolerates undefined SRC, while m4_rename_force
+-# does not.
+-m4_define([m4_copy_force],
+-[m4_ifdef([$2], [_m4_undefine([$2])])m4_copy($@)])
+-
+-m4_define([m4_rename_force],
+-[m4_ifdef([$2], [_m4_undefine([$2])])m4_rename($@)])
+-
+-
+-# m4_define_default(MACRO, VALUE)
+-# -------------------------------
+-# If MACRO is undefined, set it to VALUE.
+-m4_define([m4_define_default],
+-[m4_ifndef([$1], [m4_define($@)])])
+-
+-
+-# m4_default(EXP1, EXP2)
+-# m4_default_nblank(EXP1, EXP2)
+-# -----------------------------
+-# Returns EXP1 if not empty/blank, otherwise EXP2.  Expand the result.
+-#
+-# m4_default is called on hot paths, so inline the contents of m4_ifval,
+-# for one less round of expansion.
+-m4_define([m4_default],
+-[m4_if([$1], [], [$2], [$1])])
+-
+-m4_define([m4_default_nblank],
+-[m4_ifblank([$1], [$2], [$1])])
+-
+-
+-# m4_default_quoted(EXP1, EXP2)
+-# m4_default_nblank_quoted(EXP1, EXP2)
+-# ------------------------------------
+-# Returns EXP1 if non empty/blank, otherwise EXP2.  Leave the result quoted.
+-#
+-# For comparison:
+-#   m4_define([active], [ACTIVE])
+-#   m4_default([active], [default]) => ACTIVE
+-#   m4_default([], [active]) => ACTIVE
+-#   -m4_default([ ], [active])- => - -
+-#   -m4_default_nblank([ ], [active])- => -ACTIVE-
+-#   m4_default_quoted([active], [default]) => active
+-#   m4_default_quoted([], [active]) => active
+-#   -m4_default_quoted([ ], [active])- => - -
+-#   -m4_default_nblank_quoted([ ], [active])- => -active-
+-#
+-# m4_default macro is called on hot paths, so inline the contents of m4_ifval,
+-# for one less round of expansion.
+-m4_define([m4_default_quoted],
+-[m4_if([$1], [], [[$2]], [[$1]])])
+-
+-m4_define([m4_default_nblank_quoted],
+-[m4_ifblank([$1], [[$2]], [[$1]])])
+-
+-
+-# m4_defn(NAME)
+-# -------------
+-# Like the original, except guarantee a warning when using something which is
+-# undefined (unlike M4 1.4.x).  This replacement is not a full-featured
+-# replacement: if any of the defined macros contain unbalanced quoting, but
+-# when pasted together result in a well-quoted string, then only native m4
+-# support is able to get it correct.  But that's where quadrigraphs come in
+-# handy, if you really need unbalanced quotes inside your macros.
+-#
+-# This macro is called frequently, so minimize the amount of additional
+-# expansions by skipping m4_ifndef.  Better yet, if __m4_version__ exists,
+-# (added in M4 1.6), then let m4 do the job for us (see m4_init).
+-m4_define([m4_defn],
+-[m4_if([$#], [0], [[$0]],
+-       [$#], [1], [m4_ifdef([$1], [_m4_defn([$1])],
+-                          [m4_fatal([$0: undefined macro: $1])])],
+-       [m4_map_args([$0], $@)])])
+-
+-
+-# m4_dumpdef(NAME...)
+-# -------------------
+-# In m4 1.4.x, dumpdef writes to the current debugfile, rather than
+-# stderr.  This in turn royally confuses autom4te; so we follow the
+-# lead of newer m4 and always dump to stderr.  Unlike the original,
+-# this version requires an argument, since there is no convenient way
+-# in m4 1.4.x to grab the names of all defined macros.  Newer m4
+-# always dumps to stderr, regardless of the current debugfile; it also
+-# provides m4symbols as a way to grab all current macro names.  But
+-# dumpdefs is not frequently called, so we don't need to worry about
+-# conditionally using these newer features.  Also, this version
+-# doesn't sort multiple arguments.
+-#
+-# If we detect m4 1.6 or newer, then provide an alternate definition,
+-# installed during m4_init, that allows builtins through.
+-# Unfortunately, there is no nice way in m4 1.4.x to dump builtins.
+-m4_define([m4_dumpdef],
+-[m4_if([$#], [0], [m4_fatal([$0: missing argument])],
+-       [$#], [1], [m4_ifdef([$1], [m4_errprintn(
+-  [$1:        ]m4_dquote(_m4_defn([$1])))], [m4_fatal([$0: undefined macro: $1])])],
+-       [m4_map_args([$0], $@)])])
+-
+-m4_define([_m4_dumpdef],
+-[m4_if([$#], [0], [m4_fatal([$0: missing argument])],
+-       [$#], [1], [m4_builtin([dumpdef], [$1])],
+-       [m4_map_args_sep([m4_builtin([dumpdef],], [)], [], $@)])])
+-
+-
+-# m4_dumpdefs(NAME...)
+-# --------------------
+-# Similar to `m4_dumpdef(NAME)', but if NAME was m4_pushdef'ed, display its
+-# value stack (most recent displayed first).  Also, this version silently
+-# ignores undefined macros, rather than erroring out.
+-#
+-# This macro cheats, because it relies on the current definition of NAME
+-# while the second argument of m4_stack_foreach_lifo is evaluated (which
+-# would be undefined according to the API).
+-m4_define([m4_dumpdefs],
+-[m4_if([$#], [0], [m4_fatal([$0: missing argument])],
+-       [$#], [1], [m4_stack_foreach_lifo([$1], [m4_dumpdef([$1])m4_ignore])],
+-       [m4_map_args([$0], $@)])])
+-
+-# m4_esyscmd_s(COMMAND)
+-# ---------------------
+-# Like m4_esyscmd, except strip any trailing newlines, thus behaving
+-# more like shell command substitution.
+-m4_define([m4_esyscmd_s],
+-[m4_chomp_all(m4_esyscmd([$1]))])
+-
+-
+-# m4_popdef(NAME)
+-# ---------------
+-# Like the original, except guarantee a warning when using something which is
+-# undefined (unlike M4 1.4.x).
+-#
+-# This macro is called frequently, so minimize the amount of additional
+-# expansions by skipping m4_ifndef.  Better yet, if __m4_version__ exists,
+-# (added in M4 1.6), then let m4 do the job for us (see m4_init).
+-m4_define([m4_popdef],
+-[m4_if([$#], [0], [[$0]],
+-       [$#], [1], [m4_ifdef([$1], [_m4_popdef([$1])],
+-                          [m4_fatal([$0: undefined macro: $1])])],
+-       [m4_map_args([$0], $@)])])
+-
+-
+-# m4_shiftn(N, ...)
+-# -----------------
+-# Returns ... shifted N times.  Useful for recursive "varargs" constructs.
+-#
+-# Autoconf does not use this macro, because it is inherently slower than
+-# calling the common cases of m4_shift2 or m4_shift3 directly.  But it
+-# might as well be fast for other clients, such as Libtool.  One way to
+-# do this is to expand $@ only once in _m4_shiftn (otherwise, for long
+-# lists, the expansion of m4_if takes twice as much memory as what the
+-# list itself occupies, only to throw away the unused branch).  The end
+-# result is strictly equivalent to
+-#   m4_if([$1], 1, [m4_shift(,m4_shift(m4_shift($@)))],
+-#         [_m4_shiftn(m4_decr([$1]), m4_shift(m4_shift($@)))])
+-# but with the final `m4_shift(m4_shift($@)))' shared between the two
+-# paths.  The first leg uses a no-op m4_shift(,$@) to balance out the ().
+-#
+-# Please keep foreach.m4 in sync with any adjustments made here.
+-m4_define([m4_shiftn],
+-[m4_assert(0 < $1 && $1 < $#)_$0($@)])
+-
+-m4_define([_m4_shiftn],
+-[m4_if([$1], 1, [m4_shift(],
+-       [$0(m4_decr([$1])]), m4_shift(m4_shift($@)))])
+-
+-# m4_shift2(...)
+-# m4_shift3(...)
+-# --------------
+-# Returns ... shifted twice, and three times.  Faster than m4_shiftn.
+-m4_define([m4_shift2], [m4_shift(m4_shift($@))])
+-m4_define([m4_shift3], [m4_shift(m4_shift(m4_shift($@)))])
+-
+-# _m4_shift2(...)
+-# _m4_shift3(...)
+-# ---------------
+-# Like m4_shift2 or m4_shift3, except include a leading comma unless shifting
+-# consumes all arguments.  Why?  Because in recursion, it is nice to
+-# distinguish between 1 element left and 0 elements left, based on how many
+-# arguments this shift expands to.
+-m4_define([_m4_shift2],
+-[m4_if([$#], [2], [],
+-       [, m4_shift(m4_shift($@))])])
+-m4_define([_m4_shift3],
+-[m4_if([$#], [3], [],
+-       [, m4_shift(m4_shift(m4_shift($@)))])])
+-
+-
+-# m4_undefine(NAME)
+-# -----------------
+-# Like the original, except guarantee a warning when using something which is
+-# undefined (unlike M4 1.4.x).
+-#
+-# This macro is called frequently, so minimize the amount of additional
+-# expansions by skipping m4_ifndef.  Better yet, if __m4_version__ exists,
+-# (added in M4 1.6), then let m4 do the job for us (see m4_init).
+-m4_define([m4_undefine],
+-[m4_if([$#], [0], [[$0]],
+-       [$#], [1], [m4_ifdef([$1], [_m4_undefine([$1])],
+-                          [m4_fatal([$0: undefined macro: $1])])],
+-       [m4_map_args([$0], $@)])])
+-
+-# _m4_wrap(PRE, POST)
+-# -------------------
+-# Helper macro for m4_wrap and m4_wrap_lifo.  Allows nested calls to
+-# m4_wrap within wrapped text.  Use _m4_defn and _m4_popdef for speed.
+-m4_define([_m4_wrap],
+-[m4_ifdef([$0_text],
+-        [m4_define([$0_text], [$1]_m4_defn([$0_text])[$2])],
+-        [m4_builtin([m4wrap], [m4_unquote(
+-  _m4_defn([$0_text])_m4_popdef([$0_text]))])m4_define([$0_text], [$1$2])])])
+-
+-# m4_wrap(TEXT)
+-# -------------
+-# Append TEXT to the list of hooks to be executed at the end of input.
+-# Whereas the order of the original may be LIFO in the underlying m4,
+-# this version is always FIFO.
+-m4_define([m4_wrap],
+-[_m4_wrap([], [$1[]])])
+-
+-# m4_wrap_lifo(TEXT)
+-# ------------------
+-# Prepend TEXT to the list of hooks to be executed at the end of input.
+-# Whereas the order of m4_wrap may be FIFO in the underlying m4, this
+-# version is always LIFO.
+-m4_define([m4_wrap_lifo],
+-[_m4_wrap([$1[]])])
+-
+-## ------------------------- ##
+-## 7. Quoting manipulation.  ##
+-## ------------------------- ##
+-
+-
+-# m4_apply(MACRO, LIST)
+-# ---------------------
+-# Invoke MACRO, with arguments provided from the quoted list of
+-# comma-separated quoted arguments.  If LIST is empty, invoke MACRO
+-# without arguments.  The expansion will not be concatenated with
+-# subsequent text.
+-m4_define([m4_apply],
+-[m4_if([$2], [], [$1], [$1($2)])[]])
+-
+-# _m4_apply(MACRO, LIST)
+-# ----------------------
+-# Like m4_apply, except do nothing if LIST is empty.
+-m4_define([_m4_apply],
+-[m4_if([$2], [], [], [$1($2)[]])])
+-
+-
+-# m4_count(ARGS)
+-# --------------
+-# Return a count of how many ARGS are present.
+-m4_define([m4_count], [$#])
+-
+-
+-# m4_curry(MACRO, ARG...)
+-# -----------------------
+-# Perform argument currying.  The expansion of this macro is another
+-# macro that takes exactly one argument, appends it to the end of the
+-# original ARG list, then invokes MACRO.  For example:
+-#   m4_curry([m4_curry], [m4_reverse], [1])([2])([3]) => 3, 2, 1
+-# Not quite as practical as m4_incr, but you could also do:
+-#   m4_define([add], [m4_eval(([$1]) + ([$2]))])
+-#   m4_define([add_one], [m4_curry([add], [1])])
+-#   add_one()([2]) => 3
+-m4_define([m4_curry], [$1(m4_shift($@,)_$0])
+-m4_define([_m4_curry],               [[$1])])
+-
+-
+-# m4_do(STRING, ...)
+-# ------------------
+-# This macro invokes all its arguments (in sequence, of course).  It is
+-# useful for making your macros more structured and readable by dropping
+-# unnecessary dnl's and have the macros indented properly.  No concatenation
+-# occurs after a STRING; use m4_unquote(m4_join(,STRING)) for that.
+-#
+-# Please keep foreach.m4 in sync with any adjustments made here.
+-m4_define([m4_do],
+-[m4_if([$#], 0, [],
+-       [$#], 1, [$1[]],
+-       [$1[]$0(m4_shift($@))])])
+-
+-
+-# m4_dquote(ARGS)
+-# ---------------
+-# Return ARGS as a quoted list of quoted arguments.
+-m4_define([m4_dquote],  [[$@]])
+-
+-
+-# m4_dquote_elt(ARGS)
+-# -------------------
+-# Return ARGS as an unquoted list of double-quoted arguments.
+-#
+-# Please keep foreach.m4 in sync with any adjustments made here.
+-m4_define([m4_dquote_elt],
+-[m4_if([$#], [0], [],
+-       [$#], [1], [[[$1]]],
+-       [[[$1]],$0(m4_shift($@))])])
+-
+-
+-# m4_echo(ARGS)
+-# -------------
+-# Return the ARGS, with the same level of quoting.  Whitespace after
+-# unquoted commas are consumed.
+-m4_define([m4_echo], [$@])
+-
+-
+-# m4_expand(ARG)
+-# _m4_expand(ARG)
+-# ---------------
+-# Return the expansion of ARG as a single string.  Unlike
+-# m4_quote($1), this preserves whitespace following single-quoted
+-# commas that appear within ARG.  It also deals with shell case
+-# statements.
+-#
+-#   m4_define([active], [ACT, IVE])
+-#   m4_define([active2], [[ACT, IVE]])
+-#   m4_quote(active, active2)
+-#   => ACT,IVE,ACT, IVE
+-#   m4_expand([active, active2])
+-#   => ACT, IVE, ACT, IVE
+-#
+-# Unfortunately, due to limitations in m4, ARG must expand to
+-# something with balanced quotes (use quadrigraphs to get around
+-# this), and should not contain the unlikely delimiters -=<{( or
+-# )}>=-.  It is possible to have unbalanced quoted `(' or `)', as well
+-# as unbalanced unquoted `)'.  m4_expand can handle unterminated
+-# comments or dnl on the final line, at the expense of speed; it also
+-# aids in detecting attempts to incorrectly change the current
+-# diversion inside ARG.  Meanwhile, _m4_expand is faster but must be
+-# given a terminated expansion, and has no safety checks for
+-# mis-diverted text.
+-#
+-# Exploit that extra unquoted () will group unquoted commas and the
+-# following whitespace.  m4_bpatsubst can't handle newlines inside $1,
+-# and m4_substr strips quoting.  So we (ab)use m4_changequote, using
+-# temporary quotes to remove the delimiters that conveniently included
+-# the unquoted () that were added prior to the changequote.
+-#
+-# Thanks to shell case statements, too many people are prone to pass
+-# underquoted `)', so we try to detect that by passing a marker as a
+-# fourth argument; if the marker is not present, then we assume that
+-# we encountered an early `)', and re-expand the first argument, but
+-# this time with one more `(' in the second argument and in the
+-# open-quote delimiter.  We must also ignore the slop from the
+-# previous try.  The final macro is thus half line-noise, half art.
+-m4_define([m4_expand],
+-[m4_pushdef([m4_divert], _m4_defn([_m4_divert_unsafe]))]dnl
+-[m4_pushdef([m4_divert_push], _m4_defn([_m4_divert_unsafe]))]dnl
+-[m4_chomp(_$0([$1
+-]))_m4_popdef([m4_divert], [m4_divert_push])])
+-
+-m4_define([_m4_expand], [$0_([$1], [(], -=<{($1)}>=-, [}>=-])])
+-
+-m4_define([_m4_expand_],
+-[m4_if([$4], [}>=-],
+-       [m4_changequote([-=<{$2], [)}>=-])$3m4_changequote([, ])],
+-       [$0([$1], [($2], -=<{($2$1)}>=-, [}>=-])m4_ignore$2])])
+-
+-
+-# m4_ignore(ARGS)
+-# ---------------
+-# Expands to nothing.  Useful for conditionally ignoring an arbitrary
+-# number of arguments (see _m4_list_cmp for an example).
+-m4_define([m4_ignore])
+-
+-
+-# m4_make_list(ARGS)
+-# ------------------
+-# Similar to m4_dquote, this creates a quoted list of quoted ARGS.  This
+-# version is less efficient than m4_dquote, but separates each argument
+-# with a comma and newline, rather than just comma, for readability.
+-# When developing an m4sugar algorithm, you could temporarily use
+-#   m4_pushdef([m4_dquote],m4_defn([m4_make_list]))
+-# around your code to make debugging easier.
+-m4_define([m4_make_list], [m4_join([,
+-], m4_dquote_elt($@))])
+-
+-
+-# m4_noquote(STRING)
+-# ------------------
+-# Return the result of ignoring all quotes in STRING and invoking the
+-# macros it contains.  Among other things, this is useful for enabling
+-# macro invocations inside strings with [] blocks (for instance regexps
+-# and help-strings).  On the other hand, since all quotes are disabled,
+-# any macro expanded during this time that relies on nested [] quoting
+-# will likely crash and burn.  This macro is seldom useful; consider
+-# m4_unquote or m4_expand instead.
+-m4_define([m4_noquote],
+-[m4_changequote([-=<{(],[)}>=-])$1-=<{()}>=-m4_changequote([,])])
+-
+-
+-# m4_quote(ARGS)
+-# --------------
+-# Return ARGS as a single argument.  Any whitespace after unquoted commas
+-# is stripped.  There is always output, even when there were no arguments.
+-#
+-# It is important to realize the difference between `m4_quote(exp)' and
+-# `[exp]': in the first case you obtain the quoted *result* of the
+-# expansion of EXP, while in the latter you just obtain the string
+-# `exp'.
+-m4_define([m4_quote],  [[$*]])
+-
+-
+-# _m4_quote(ARGS)
+-# ---------------
+-# Like m4_quote, except that when there are no arguments, there is no
+-# output.  For conditional scenarios (such as passing _m4_quote as the
+-# macro name in m4_mapall), this feature can be used to distinguish between
+-# one argument of the empty string vs. no arguments.  However, in the
+-# normal case with arguments present, this is less efficient than m4_quote.
+-m4_define([_m4_quote],
+-[m4_if([$#], [0], [], [[$*]])])
+-
+-
+-# m4_reverse(ARGS)
+-# ----------------
+-# Output ARGS in reverse order.
+-#
+-# Please keep foreach.m4 in sync with any adjustments made here.
+-m4_define([m4_reverse],
+-[m4_if([$#], [0], [], [$#], [1], [[$1]],
+-       [$0(m4_shift($@)), [$1]])])
+-
+-
+-# m4_unquote(ARGS)
+-# ----------------
+-# Remove one layer of quotes from each ARG, performing one level of
+-# expansion.  For one argument, m4_unquote([arg]) is more efficient than
+-# m4_do([arg]), but for multiple arguments, the difference is that
+-# m4_unquote separates arguments with commas while m4_do concatenates.
+-# Follow this macro with [] if concatenation with subsequent text is
+-# undesired.
+-m4_define([m4_unquote], [$*])
+-
+-
+-## -------------------------- ##
+-## 8. Implementing m4 loops.  ##
+-## -------------------------- ##
+-
+-
+-# m4_for(VARIABLE, FIRST, LAST, [STEP = +/-1], EXPRESSION)
+-# --------------------------------------------------------
+-# Expand EXPRESSION defining VARIABLE to FROM, FROM + 1, ..., TO with
+-# increments of STEP.  Both limits are included, and bounds are
+-# checked for consistency.  The algorithm is robust to indirect
+-# VARIABLE names.  Changing VARIABLE inside EXPRESSION will not impact
+-# the number of iterations.
+-#
+-# Uses _m4_defn for speed, and avoid dnl in the macro body.  Factor
+-# the _m4_for call so that EXPRESSION is only parsed once.
+-m4_define([m4_for],
+-[m4_pushdef([$1], m4_eval([$2]))]dnl
+-[m4_cond([m4_eval(([$3]) > ([$2]))], 1,
+-         [m4_pushdef([_m4_step], m4_eval(m4_default_quoted([$4],
+-            1)))m4_assert(_m4_step > 0)_$0(_m4_defn([$1]),
+-  m4_eval((([$3]) - ([$2])) / _m4_step * _m4_step + ([$2])), _m4_step,],
+-       [m4_eval(([$3]) < ([$2]))], 1,
+-         [m4_pushdef([_m4_step], m4_eval(m4_default_quoted([$4],
+-            -1)))m4_assert(_m4_step < 0)_$0(_m4_defn([$1]),
+-  m4_eval((([$2]) - ([$3])) / -(_m4_step) * _m4_step + ([$2])), _m4_step,],
+-       [m4_pushdef([_m4_step])_$0(_m4_defn([$1]), _m4_defn([$1]), 0,])]dnl
+-[[m4_define([$1],], [)$5])m4_popdef([_m4_step], [$1])])
+-
+-# _m4_for(COUNT, LAST, STEP, PRE, POST)
+-# -------------------------------------
+-# Core of the loop, no consistency checks, all arguments are plain
+-# numbers.  Expand PRE[COUNT]POST, then alter COUNT by STEP and
+-# iterate if COUNT is not LAST.
+-m4_define([_m4_for],
+-[$4[$1]$5[]m4_if([$1], [$2], [],
+-               [$0(m4_eval([$1 + $3]), [$2], [$3], [$4], [$5])])])
+-
+-
+-# Implementing `foreach' loops in m4 is much more tricky than it may
+-# seem.  For example, the old M4 1.4.4 manual had an incorrect example,
+-# which looked like this (when translated to m4sugar):
+-#
+-# | # foreach(VAR, (LIST), STMT)
+-# | m4_define([foreach],
+-# |   [m4_pushdef([$1])_foreach([$1], [$2], [$3])m4_popdef([$1])])
+-# | m4_define([_arg1], [$1])
+-# | m4_define([_foreach],
+-# |   [m4_if([$2], [()], ,
+-# |     [m4_define([$1], _arg1$2)$3[]_foreach([$1], (m4_shift$2), [$3])])])
+-#
+-# But then if you run
+-#
+-# | m4_define(a, 1)
+-# | m4_define(b, 2)
+-# | m4_define(c, 3)
+-# | foreach([f], [([a], [(b], [c)])], [echo f
+-# | ])
+-#
+-# it gives
+-#
+-#  => echo 1
+-#  => echo (2,3)
+-#
+-# which is not what is expected.
+-#
+-# Of course the problem is that many quotes are missing.  So you add
+-# plenty of quotes at random places, until you reach the expected
+-# result.  Alternatively, if you are a quoting wizard, you directly
+-# reach the following implementation (but if you really did, then
+-# apply to the maintenance of m4sugar!).
+-#
+-# | # foreach(VAR, (LIST), STMT)
+-# | m4_define([foreach], [m4_pushdef([$1])_foreach($@)m4_popdef([$1])])
+-# | m4_define([_arg1], [[$1]])
+-# | m4_define([_foreach],
+-# |  [m4_if($2, [()], ,
+-# |    [m4_define([$1], [_arg1$2])$3[]_foreach([$1], [(m4_shift$2)], [$3])])])
+-#
+-# which this time answers
+-#
+-#  => echo a
+-#  => echo (b
+-#  => echo c)
+-#
+-# Bingo!
+-#
+-# Well, not quite.
+-#
+-# With a better look, you realize that the parens are more a pain than
+-# a help: since anyway you need to quote properly the list, you end up
+-# with always using an outermost pair of parens and an outermost pair
+-# of quotes.  Rejecting the parens both eases the implementation, and
+-# simplifies the use:
+-#
+-# | # foreach(VAR, (LIST), STMT)
+-# | m4_define([foreach], [m4_pushdef([$1])_foreach($@)m4_popdef([$1])])
+-# | m4_define([_arg1], [$1])
+-# | m4_define([_foreach],
+-# |  [m4_if($2, [], ,
+-# |    [m4_define([$1], [_arg1($2)])$3[]_foreach([$1], [m4_shift($2)], [$3])])])
+-#
+-#
+-# Now, just replace the `$2' with `m4_quote($2)' in the outer `m4_if'
+-# to improve robustness, and you come up with a nice implementation
+-# that doesn't require extra parentheses in the user's LIST.
+-#
+-# But wait -  now the algorithm is quadratic, because every recursion of
+-# the algorithm keeps the entire LIST and merely adds another m4_shift to
+-# the quoted text.  If the user has a lot of elements in LIST, you can
+-# bring the system to its knees with the memory m4 then requires, or trip
+-# the m4 --nesting-limit recursion factor.  The only way to avoid
+-# quadratic growth is ensure m4_shift is expanded prior to the recursion.
+-# Hence the design below.
+-#
+-# The M4 manual now includes a chapter devoted to this issue, with
+-# the lessons learned from m4sugar.  And still, this design is only
+-# optimal for M4 1.6; see foreach.m4 for yet more comments on why
+-# M4 1.4.x uses yet another implementation.
+-
+-
+-# m4_foreach(VARIABLE, LIST, EXPRESSION)
+-# --------------------------------------
+-#
+-# Expand EXPRESSION assigning each value of the LIST to VARIABLE.
+-# LIST should have the form `item_1, item_2, ..., item_n', i.e. the
+-# whole list must *quoted*.  Quote members too if you don't want them
+-# to be expanded.
+-#
+-# This macro is robust to active symbols:
+-#      | m4_define(active, [ACT, IVE])
+-#      | m4_foreach(Var, [active, active], [-Var-])
+-#     => -ACT--IVE--ACT--IVE-
+-#
+-#      | m4_foreach(Var, [[active], [active]], [-Var-])
+-#     => -ACT, IVE--ACT, IVE-
+-#
+-#      | m4_foreach(Var, [[[active]], [[active]]], [-Var-])
+-#     => -active--active-
+-#
+-# This macro is called frequently, so avoid extra expansions such as
+-# m4_ifval and dnl.  Also, since $2 might be quite large, try to use it
+-# as little as possible in _m4_foreach; each extra use requires that much
+-# more memory for expansion.  So, rather than directly compare $2 against
+-# [] and use m4_car/m4_cdr for recursion, we instead unbox the list (which
+-# requires swapping the argument order in the helper), insert an ignored
+-# third argument, and use m4_shift3 to detect when recursion is complete,
+-# at which point this looks very much like m4_map_args.
+-m4_define([m4_foreach],
+-[m4_if([$2], [], [],
+-       [m4_pushdef([$1])_$0([m4_define([$1],], [)$3], [],
+-  $2)m4_popdef([$1])])])
+-
+-# _m4_foreach(PRE, POST, IGNORED, ARG...)
+-# ---------------------------------------
+-# Form the common basis of the m4_foreach and m4_map macros.  For each
+-# ARG, expand PRE[ARG]POST[].  The IGNORED argument makes recursion
+-# easier, and must be supplied rather than implicit.
+-#
+-# Please keep foreach.m4 in sync with any adjustments made here.
+-m4_define([_m4_foreach],
+-[m4_if([$#], [3], [],
+-       [$1[$4]$2[]$0([$1], [$2], m4_shift3($@))])])
+-
+-
+-# m4_foreach_w(VARIABLE, LIST, EXPRESSION)
+-# ----------------------------------------
+-# Like m4_foreach, but the list is whitespace separated.  Depending on
+-# EXPRESSION, it may be more efficient to use m4_map_args_w.
+-#
+-# This macro is robust to active symbols:
+-#    m4_foreach_w([Var], [ active
+-#    b        act\
+-#    ive  ], [-Var-])end
+-#    => -active--b--active-end
+-#
+-# This used to use a slower implementation based on m4_foreach:
+-#   m4_foreach([$1], m4_split(m4_normalize([$2]), [ ]), [$3])
+-m4_define([m4_foreach_w],
+-[m4_pushdef([$1])m4_map_args_w([$2],
+-  [m4_define([$1],], [)$3])m4_popdef([$1])])
+-
+-
+-# m4_map(MACRO, LIST)
+-# m4_mapall(MACRO, LIST)
+-# ----------------------
+-# Invoke MACRO($1), MACRO($2) etc. where $1, $2... are the elements of
+-# LIST.  $1, $2... must in turn be lists, appropriate for m4_apply.
+-# If LIST contains an empty sublist, m4_map skips the expansion of
+-# MACRO, while m4_mapall expands MACRO with no arguments.
+-#
+-# Since LIST may be quite large, we want to minimize how often it
+-# appears in the expansion.  Rather than use m4_car/m4_cdr iteration,
+-# we unbox the list, and use _m4_foreach for iteration.  For m4_map,
+-# an empty list behaves like an empty sublist and gets ignored; for
+-# m4_mapall, we must special-case the empty list.
+-m4_define([m4_map],
+-[_m4_foreach([_m4_apply([$1],], [)], [], $2)])
+-
+-m4_define([m4_mapall],
+-[m4_if([$2], [], [],
+-       [_m4_foreach([m4_apply([$1],], [)], [], $2)])])
+-
+-
+-# m4_map_sep(MACRO, [SEPARATOR], LIST)
+-# m4_mapall_sep(MACRO, [SEPARATOR], LIST)
+-# ---------------------------------------
+-# Invoke MACRO($1), SEPARATOR, MACRO($2), ..., MACRO($N) where $1,
+-# $2... $N are the elements of LIST, and are in turn lists appropriate
+-# for m4_apply.  SEPARATOR is expanded, in order to allow the creation
+-# of a list of arguments by using a single-quoted comma as the
+-# separator.  For each empty sublist, m4_map_sep skips the expansion
+-# of MACRO and SEPARATOR, while m4_mapall_sep expands MACRO with no
+-# arguments.
+-#
+-# For m4_mapall_sep, merely expand the first iteration without the
+-# separator, then include separator as part of subsequent recursion;
+-# but avoid extra expansion of LIST's side-effects via a helper macro.
+-# For m4_map_sep, things are trickier - we don't know if the first
+-# list element is an empty sublist, so we must define a self-modifying
+-# helper macro and use that as the separator instead.
+-m4_define([m4_map_sep],
+-[m4_pushdef([m4_Sep], [m4_define([m4_Sep], _m4_defn([m4_unquote]))])]dnl
+-[_m4_foreach([_m4_apply([m4_Sep([$2])[]$1],], [)], [], $3)m4_popdef([m4_Sep])])
+-
+-m4_define([m4_mapall_sep],
+-[m4_if([$3], [], [], [_$0([$1], [$2], $3)])])
+-
+-m4_define([_m4_mapall_sep],
+-[m4_apply([$1], [$3])_m4_foreach([m4_apply([$2[]$1],], [)], m4_shift2($@))])
+-
+-# m4_map_args(EXPRESSION, ARG...)
+-# -------------------------------
+-# Expand EXPRESSION([ARG]) for each argument.  More efficient than
+-#   m4_foreach([var], [ARG...], [EXPRESSION(m4_defn([var]))])
+-# Shorthand for m4_map_args_sep([EXPRESSION(], [)], [], ARG...).
+-m4_define([m4_map_args],
+-[m4_if([$#], [0], [m4_fatal([$0: too few arguments: $#])],
+-       [$#], [1], [],
+-       [$#], [2], [$1([$2])[]],
+-       [_m4_foreach([$1(], [)], $@)])])
+-
+-
+-# m4_map_args_pair(EXPRESSION, [END-EXPR = EXPRESSION], ARG...)
+-# -------------------------------------------------------------
+-# Perform a pairwise grouping of consecutive ARGs, by expanding
+-# EXPRESSION([ARG1], [ARG2]).  If there are an odd number of ARGs, the
+-# final argument is expanded with END-EXPR([ARGn]).
+-#
+-# For example:
+-#   m4_define([show], [($*)m4_newline])dnl
+-#   m4_map_args_pair([show], [], [a], [b], [c], [d], [e])dnl
+-#   => (a,b)
+-#   => (c,d)
+-#   => (e)
+-#
+-# Please keep foreach.m4 in sync with any adjustments made here.
+-m4_define([m4_map_args_pair],
+-[m4_if([$#], [0], [m4_fatal([$0: too few arguments: $#])],
+-       [$#], [1], [m4_fatal([$0: too few arguments: $#: $1])],
+-       [$#], [2], [],
+-       [$#], [3], [m4_default([$2], [$1])([$3])[]],
+-       [$#], [4], [$1([$3], [$4])[]],
+-       [$1([$3], [$4])[]$0([$1], [$2], m4_shift(m4_shift3($@)))])])
+-
+-
+-# m4_map_args_sep([PRE], [POST], [SEP], ARG...)
+-# ---------------------------------------------
+-# Expand PRE[ARG]POST for each argument, with SEP between arguments.
+-m4_define([m4_map_args_sep],
+-[m4_if([$#], [0], [m4_fatal([$0: too few arguments: $#])],
+-       [$#], [1], [],
+-       [$#], [2], [],
+-       [$#], [3], [],
+-       [$#], [4], [$1[$4]$2[]],
+-       [$1[$4]$2[]_m4_foreach([$3[]$1], [$2], m4_shift3($@))])])
+-
+-
+-# m4_map_args_w(STRING, [PRE], [POST], [SEP])
+-# -------------------------------------------
+-# Perform the expansion of PRE[word]POST[] for each word in STRING
+-# separated by whitespace.  More efficient than:
+-#   m4_foreach_w([var], [STRING], [PRE[]m4_defn([var])POST])
+-# Additionally, expand SEP between words.
+-#
+-# As long as we have to use m4_bpatsubst to split the string, we might
+-# as well make it also apply PRE and POST; this avoids iteration
+-# altogether.  But we must be careful of any \ in PRE or POST.
+-# _m4_strip returns a quoted string, but that's okay, since it also
+-# supplies an empty leading and trailing argument due to our
+-# intentional whitespace around STRING.  We use m4_substr to strip the
+-# empty elements and remove the extra layer of quoting.
+-m4_define([m4_map_args_w],
+-[_$0(_m4_split([ ]m4_flatten([$1])[ ], [[      ]+],
+-             m4_if(m4_index([$2$3$4], [\]), [-1], [[$3[]$4[]$2]],
+-                   [m4_bpatsubst([[$3[]$4[]$2]], [\\], [\\\\])])),
+-     m4_len([[]$3[]$4]), m4_len([$4[]$2[]]))])
+-
+-m4_define([_m4_map_args_w],
+-[m4_substr([$1], [$2], m4_eval(m4_len([$1]) - [$2] - [$3]))])
+-
+-
+-# m4_stack_foreach(MACRO, FUNC)
+-# m4_stack_foreach_lifo(MACRO, FUNC)
+-# ----------------------------------
+-# Pass each stacked definition of MACRO to the one-argument macro FUNC.
+-# m4_stack_foreach proceeds in FIFO order, while m4_stack_foreach_lifo
+-# processes the topmost definitions first.  In addition, FUNC should
+-# not push or pop definitions of MACRO, and should not expect anything about
+-# the active definition of MACRO (it will not be the topmost, and may not
+-# be the one passed to FUNC either).
+-#
+-# Some macros simply can't be examined with this method: namely,
+-# anything involved in the implementation of _m4_stack_reverse.
+-m4_define([m4_stack_foreach],
+-[_m4_stack_reverse([$1], [m4_tmp-$1])]dnl
+-[_m4_stack_reverse([m4_tmp-$1], [$1], [$2(_m4_defn([m4_tmp-$1]))])])
+-
+-m4_define([m4_stack_foreach_lifo],
+-[_m4_stack_reverse([$1], [m4_tmp-$1], [$2(_m4_defn([m4_tmp-$1]))])]dnl
+-[_m4_stack_reverse([m4_tmp-$1], [$1])])
+-
+-# m4_stack_foreach_sep(MACRO, [PRE], [POST], [SEP])
+-# m4_stack_foreach_sep_lifo(MACRO, [PRE], [POST], [SEP])
+-# ------------------------------------------------------
+-# Similar to m4_stack_foreach and m4_stack_foreach_lifo, in that every
+-# definition of a pushdef stack will be visited.  But rather than
+-# passing the definition as a single argument to a macro, this variant
+-# expands the concatenation of PRE[]definition[]POST, and expands SEP
+-# between consecutive expansions.  Note that m4_stack_foreach([a], [b])
+-# is equivalent to m4_stack_foreach_sep([a], [b(], [)]).
+-m4_define([m4_stack_foreach_sep],
+-[_m4_stack_reverse([$1], [m4_tmp-$1])]dnl
+-[_m4_stack_reverse([m4_tmp-$1], [$1], [$2[]_m4_defn([m4_tmp-$1])$3], [$4[]])])
+-
+-m4_define([m4_stack_foreach_sep_lifo],
+-[_m4_stack_reverse([$1], [m4_tmp-$1], [$2[]_m4_defn([m4_tmp-$1])$3], [$4[]])]dnl
+-[_m4_stack_reverse([m4_tmp-$1], [$1])])
+-
+-
+-# _m4_stack_reverse(OLD, NEW, [ACTION], [SEP])
+-# --------------------------------------------
+-# A recursive worker for pushdef stack manipulation.  Destructively
+-# copy the OLD stack into the NEW, and expanding ACTION for each
+-# iteration.  After the first iteration, SEP is promoted to the front
+-# of ACTION (note that SEP should include a trailing [] if it is to
+-# avoid interfering with ACTION).  The current definition is examined
+-# after the NEW has been pushed but before OLD has been popped; this
+-# order is important, as ACTION is permitted to operate on either
+-# _m4_defn([OLD]) or _m4_defn([NEW]).  Since the operation is
+-# destructive, this macro is generally used twice, with a temporary
+-# macro name holding the swapped copy.
+-m4_define([_m4_stack_reverse],
+-[m4_ifdef([$1], [m4_pushdef([$2],
+-  _m4_defn([$1]))$3[]_m4_popdef([$1])$0([$1], [$2], [$4$3])])])
+-
+-
+-
+-## --------------------------- ##
+-## 9. More diversion support.  ##
+-## --------------------------- ##
+-
+-
+-# m4_cleardivert(DIVERSION-NAME...)
+-# ---------------------------------
+-# Discard any text in DIVERSION-NAME.
+-#
+-# This works even inside m4_expand.
+-m4_define([m4_cleardivert],
+-[m4_if([$#], [0], [m4_fatal([$0: missing argument])],
+-       [_m4_divert_raw([-1])m4_undivert($@)_m4_divert_raw(
+-       _m4_divert(_m4_defn([_m4_divert_diversion]), [-]))])])
+-
+-
+-# _m4_divert(DIVERSION-NAME or NUMBER, [NOWARN])
+-# ----------------------------------------------
+-# If DIVERSION-NAME is the name of a diversion, return its number,
+-# otherwise if it is a NUMBER return it.  Issue a warning about
+-# the use of a number instead of a name, unless NOWARN is provided.
+-m4_define([_m4_divert],
+-[m4_ifdef([_m4_divert($1)],
+-        [m4_indir([_m4_divert($1)])],
+-        [m4_if([$2], [], [m4_warn([syntax],
+-           [prefer named diversions])])$1])])
+-
+-# KILL is only used to suppress output.
+-m4_define([_m4_divert(KILL)],           -1)
+-
+-# The empty diversion name is a synonym for 0.
+-m4_define([_m4_divert()],                0)
+-
+-
+-# m4_divert_stack
+-# ---------------
+-# Print the diversion stack, if it's nonempty.  The caller is
+-# responsible for any leading or trailing newline.
+-m4_define([m4_divert_stack],
+-[m4_stack_foreach_sep_lifo([_m4_divert_stack], [], [], [
+-])])
+-
+-
+-# m4_divert_stack_push(MACRO-NAME, DIVERSION-NAME)
+-# ------------------------------------------------
+-# Form an entry of the diversion stack from caller MACRO-NAME and
+-# entering DIVERSION-NAME and push it.
+-m4_define([m4_divert_stack_push],
+-[m4_pushdef([_m4_divert_stack], m4_location[: $1: $2])])
+-
+-
+-# m4_divert(DIVERSION-NAME)
+-# -------------------------
+-# Change the diversion stream to DIVERSION-NAME.
+-m4_define([m4_divert],
+-[m4_popdef([_m4_divert_stack])]dnl
+-[m4_define([_m4_divert_diversion], [$1])]dnl
+-[m4_divert_stack_push([$0], [$1])]dnl
+-[_m4_divert_raw(_m4_divert([$1]))])
+-
+-
+-# m4_divert_push(DIVERSION-NAME, [NOWARN])
+-# ----------------------------------------
+-# Change the diversion stream to DIVERSION-NAME, while stacking old values.
+-# For internal use only: if NOWARN is not empty, DIVERSION-NAME can be a
+-# number instead of a name.
+-m4_define([m4_divert_push],
+-[m4_divert_stack_push([$0], [$1])]dnl
+-[m4_pushdef([_m4_divert_diversion], [$1])]dnl
+-[_m4_divert_raw(_m4_divert([$1], [$2]))])
+-
+-
+-# m4_divert_pop([DIVERSION-NAME])
+-# -------------------------------
+-# Change the diversion stream to its previous value, unstacking it.
+-# If specified, verify we left DIVERSION-NAME.
+-# When we pop the last value from the stack, we divert to -1.
+-m4_define([m4_divert_pop],
+-[m4_if([$1], [], [],
+-       [$1], _m4_defn([_m4_divert_diversion]), [],
+-       [m4_fatal([$0($1): diversion mismatch:
+-]m4_divert_stack)])]dnl
+-[_m4_popdef([_m4_divert_stack], [_m4_divert_diversion])]dnl
+-[m4_ifdef([_m4_divert_diversion], [],
+-         [m4_fatal([too many m4_divert_pop])])]dnl
+-[_m4_divert_raw(_m4_divert(_m4_defn([_m4_divert_diversion]), [-]))])
+-
+-
+-# m4_divert_text(DIVERSION-NAME, CONTENT)
+-# ---------------------------------------
+-# Output CONTENT into DIVERSION-NAME (which may be a number actually).
+-# An end of line is appended for free to CONTENT.
+-m4_define([m4_divert_text],
+-[m4_divert_push([$1])$2
+-m4_divert_pop([$1])])
+-
+-
+-# m4_divert_once(DIVERSION-NAME, CONTENT)
+-# ---------------------------------------
+-# Output CONTENT into DIVERSION-NAME once, if not already there.
+-# An end of line is appended for free to CONTENT.
+-m4_define([m4_divert_once],
+-[m4_expand_once([m4_divert_text([$1], [$2])])])
+-
+-
+-# _m4_divert_unsafe(DIVERSION-NAME)
+-# ---------------------------------
+-# Issue a warning that the attempt to change the current diversion to
+-# DIVERSION-NAME is unsafe, because this macro is being expanded
+-# during argument collection of m4_expand.
+-m4_define([_m4_divert_unsafe],
+-[m4_fatal([$0: cannot change diversion to `$1' inside m4_expand])])
+-
+-
+-# m4_undivert(DIVERSION-NAME...)
+-# ------------------------------
+-# Undivert DIVERSION-NAME.  Unlike the M4 version, this requires at
+-# least one DIVERSION-NAME; also, due to support for named diversions,
+-# this should not be used to undivert files.
+-m4_define([m4_undivert],
+-[m4_if([$#], [0], [m4_fatal([$0: missing argument])],
+-       [$#], [1], [_m4_undivert(_m4_divert([$1]))],
+-       [m4_map_args([$0], $@)])])
+-
+-
+-## --------------------------------------------- ##
+-## 10. Defining macros with bells and whistles.  ##
+-## --------------------------------------------- ##
+-
+-# `m4_defun' is basically `m4_define' but it equips the macro with the
+-# needed machinery for `m4_require'.  A macro must be m4_defun'd if
+-# either it is m4_require'd, or it m4_require's.
+-#
+-# Two things deserve attention and are detailed below:
+-#  1. Implementation of m4_require
+-#  2. Keeping track of the expansion stack
+-#
+-# 1. Implementation of m4_require
+-# ===============================
+-#
+-# Of course m4_defun calls m4_provide, so that a macro which has
+-# been expanded is not expanded again when m4_require'd, but the
+-# difficult part is the proper expansion of macros when they are
+-# m4_require'd.
+-#
+-# The implementation is based on three ideas, (i) using diversions to
+-# prepare the expansion of the macro and its dependencies (by Franc,ois
+-# Pinard), (ii) expand the most recently m4_require'd macros _after_
+-# the previous macros (by Axel Thimm), and (iii) track instances of
+-# provide before require (by Eric Blake).
+-#
+-#
+-# The first idea: why use diversions?
+-# -----------------------------------
+-#
+-# When a macro requires another, the other macro is expanded in new
+-# diversion, GROW.  When the outer macro is fully expanded, we first
+-# undivert the most nested diversions (GROW - 1...), and finally
+-# undivert GROW.  To understand why we need several diversions,
+-# consider the following example:
+-#
+-# | m4_defun([TEST1], [Test...m4_require([TEST2])1])
+-# | m4_defun([TEST2], [Test...m4_require([TEST3])2])
+-# | m4_defun([TEST3], [Test...3])
+-#
+-# Because m4_require is not required to be first in the outer macros, we
+-# must keep the expansions of the various levels of m4_require separated.
+-# Right before executing the epilogue of TEST1, we have:
+-#
+-#        GROW - 2: Test...3
+-#        GROW - 1: Test...2
+-#        GROW:     Test...1
+-#        BODY:
+-#
+-# Finally the epilogue of TEST1 undiverts GROW - 2, GROW - 1, and
+-# GROW into the regular flow, BODY.
+-#
+-#        GROW - 2:
+-#        GROW - 1:
+-#        GROW:
+-#        BODY:        Test...3; Test...2; Test...1
+-#
+-# (The semicolons are here for clarification, but of course are not
+-# emitted.)  This is what Autoconf 2.0 (I think) to 2.13 (I'm sure)
+-# implement.
+-#
+-#
+-# The second idea: first required first out
+-# -----------------------------------------
+-#
+-# The natural implementation of the idea above is buggy and produces
+-# very surprising results in some situations.  Let's consider the
+-# following example to explain the bug:
+-#
+-# | m4_defun([TEST1],  [m4_require([TEST2a])m4_require([TEST2b])])
+-# | m4_defun([TEST2a], [])
+-# | m4_defun([TEST2b], [m4_require([TEST3])])
+-# | m4_defun([TEST3],  [m4_require([TEST2a])])
+-# |
+-# | AC_INIT
+-# | TEST1
+-#
+-# The dependencies between the macros are:
+-#
+-#              3 --- 2b
+-#             /        \              is m4_require'd by
+-#            /          \       left -------------------- right
+-#         2a ------------ 1
+-#
+-# If you strictly apply the rules given in the previous section you get:
+-#
+-#        GROW - 2: TEST3
+-#        GROW - 1: TEST2a; TEST2b
+-#        GROW:     TEST1
+-#        BODY:
+-#
+-# (TEST2a, although required by TEST3 is not expanded in GROW - 3
+-# because is has already been expanded before in GROW - 1, so it has
+-# been AC_PROVIDE'd, so it is not expanded again) so when you undivert
+-# the stack of diversions, you get:
+-#
+-#        GROW - 2:
+-#        GROW - 1:
+-#        GROW:
+-#        BODY:        TEST3; TEST2a; TEST2b; TEST1
+-#
+-# i.e., TEST2a is expanded after TEST3 although the latter required the
+-# former.
+-#
+-# Starting from 2.50, we use an implementation provided by Axel Thimm.
+-# The idea is simple: the order in which macros are emitted must be the
+-# same as the one in which macros are expanded.  (The bug above can
+-# indeed be described as: a macro has been m4_provide'd before its
+-# dependent, but it is emitted after: the lack of correlation between
+-# emission and expansion order is guilty).
+-#
+-# How to do that?  You keep the stack of diversions to elaborate the
+-# macros, but each time a macro is fully expanded, emit it immediately.
+-#
+-# In the example above, when TEST2a is expanded, but it's epilogue is
+-# not run yet, you have:
+-#
+-#        GROW - 2:
+-#        GROW - 1: TEST2a
+-#        GROW:     Elaboration of TEST1
+-#        BODY:
+-#
+-# The epilogue of TEST2a emits it immediately:
+-#
+-#        GROW - 2:
+-#        GROW - 1:
+-#        GROW:     Elaboration of TEST1
+-#        BODY:     TEST2a
+-#
+-# TEST2b then requires TEST3, so right before the epilogue of TEST3, you
+-# have:
+-#
+-#        GROW - 2: TEST3
+-#        GROW - 1: Elaboration of TEST2b
+-#        GROW:     Elaboration of TEST1
+-#        BODY:      TEST2a
+-#
+-# The epilogue of TEST3 emits it:
+-#
+-#        GROW - 2:
+-#        GROW - 1: Elaboration of TEST2b
+-#        GROW:     Elaboration of TEST1
+-#        BODY:     TEST2a; TEST3
+-#
+-# TEST2b is now completely expanded, and emitted:
+-#
+-#        GROW - 2:
+-#        GROW - 1:
+-#        GROW:     Elaboration of TEST1
+-#        BODY:     TEST2a; TEST3; TEST2b
+-#
+-# and finally, TEST1 is finished and emitted:
+-#
+-#        GROW - 2:
+-#        GROW - 1:
+-#        GROW:
+-#        BODY:     TEST2a; TEST3; TEST2b: TEST1
+-#
+-# The idea is simple, but the implementation is a bit involved.  If
+-# you are like me, you will want to see the actual functioning of this
+-# implementation to be convinced.  The next section gives the full
+-# details.
+-#
+-#
+-# The Axel Thimm implementation at work
+-# -------------------------------------
+-#
+-# We consider the macros above, and this configure.ac:
+-#
+-#         AC_INIT
+-#         TEST1
+-#
+-# You should keep the definitions of _m4_defun_pro, _m4_defun_epi, and
+-# m4_require at hand to follow the steps.
+-#
+-# This implementation tries not to assume that the current diversion is
+-# BODY, so as soon as a macro (m4_defun'd) is expanded, we first
+-# record the current diversion under the name _m4_divert_dump (denoted
+-# DUMP below for short).  This introduces an important difference with
+-# the previous versions of Autoconf: you cannot use m4_require if you
+-# are not inside an m4_defun'd macro, and especially, you cannot
+-# m4_require directly from the top level.
+-#
+-# We have not tried to simulate the old behavior (better yet, we
+-# diagnose it), because it is too dangerous: a macro m4_require'd from
+-# the top level is expanded before the body of `configure', i.e., before
+-# any other test was run.  I let you imagine the result of requiring
+-# AC_STDC_HEADERS for instance, before AC_PROG_CC was actually run....
+-#
+-# After AC_INIT was run, the current diversion is BODY.
+-# * AC_INIT was run
+-#   DUMP:                undefined
+-#   diversion stack:     BODY |-
+-#
+-# * TEST1 is expanded
+-# The prologue of TEST1 sets _m4_divert_dump, which is the diversion
+-# where the current elaboration will be dumped, to the current
+-# diversion.  It also m4_divert_push to GROW, where the full
+-# expansion of TEST1 and its dependencies will be elaborated.
+-#   DUMP:        BODY
+-#   BODY:        empty
+-#   diversions:  GROW, BODY |-
+-#
+-# * TEST1 requires TEST2a
+-# _m4_require_call m4_divert_pushes another temporary diversion,
+-# GROW - 1, and expands TEST2a in there.
+-#   DUMP:        BODY
+-#   BODY:        empty
+-#   GROW - 1:    TEST2a
+-#   diversions:  GROW - 1, GROW, BODY |-
+-# Then the content of the temporary diversion is moved to DUMP and the
+-# temporary diversion is popped.
+-#   DUMP:        BODY
+-#   BODY:        TEST2a
+-#   diversions:  GROW, BODY |-
+-#
+-# * TEST1 requires TEST2b
+-# Again, _m4_require_call pushes GROW - 1 and heads to expand TEST2b.
+-#   DUMP:        BODY
+-#   BODY:        TEST2a
+-#   diversions:  GROW - 1, GROW, BODY |-
+-#
+-# * TEST2b requires TEST3
+-# _m4_require_call pushes GROW - 2 and expands TEST3 here.
+-# (TEST3 requires TEST2a, but TEST2a has already been m4_provide'd, so
+-# nothing happens.)
+-#   DUMP:        BODY
+-#   BODY:        TEST2a
+-#   GROW - 2:    TEST3
+-#   diversions:  GROW - 2, GROW - 1, GROW, BODY |-
+-# Then the diversion is appended to DUMP, and popped.
+-#   DUMP:        BODY
+-#   BODY:        TEST2a; TEST3
+-#   diversions:  GROW - 1, GROW, BODY |-
+-#
+-# * TEST1 requires TEST2b (contd.)
+-# The content of TEST2b is expanded...
+-#   DUMP:        BODY
+-#   BODY:        TEST2a; TEST3
+-#   GROW - 1:    TEST2b,
+-#   diversions:  GROW - 1, GROW, BODY |-
+-# ... and moved to DUMP.
+-#   DUMP:        BODY
+-#   BODY:        TEST2a; TEST3; TEST2b
+-#   diversions:  GROW, BODY |-
+-#
+-# * TEST1 is expanded: epilogue
+-# TEST1's own content is in GROW...
+-#   DUMP:        BODY
+-#   BODY:        TEST2a; TEST3; TEST2b
+-#   GROW:        TEST1
+-#   diversions:  BODY |-
+-# ... and it's epilogue moves it to DUMP and then undefines DUMP.
+-#   DUMP:       undefined
+-#   BODY:       TEST2a; TEST3; TEST2b; TEST1
+-#   diversions: BODY |-
+-#
+-#
+-# The third idea: track macros provided before they were required
+-# ---------------------------------------------------------------
+-#
+-# Using just the first two ideas, Autoconf 2.50 through 2.63 still had
+-# a subtle bug for more than seven years.  Let's consider the
+-# following example to explain the bug:
+-#
+-# | m4_defun([TEST1], [1])
+-# | m4_defun([TEST2], [2[]m4_require([TEST1])])
+-# | m4_defun([TEST3], [3 TEST1 m4_require([TEST2])])
+-# | TEST3
+-#
+-# After the prologue of TEST3, we are collecting text in GROW with the
+-# intent of dumping it in BODY during the epilogue.  Next, we
+-# encounter the direct invocation of TEST1, which provides the macro
+-# in place in GROW.  From there, we encounter a requirement for TEST2,
+-# which must be collected in a new diversion.  While expanding TEST2,
+-# we encounter a requirement for TEST1, but since it has already been
+-# expanded, the Axel Thimm algorithm states that we can treat it as a
+-# no-op.  But that would lead to an end result of `2 3 1', meaning
+-# that we have once again output a macro (TEST2) prior to its
+-# requirements (TEST1).
+-#
+-# The problem can only occur if a single defun'd macro first provides,
+-# then later indirectly requires, the same macro.  Note that directly
+-# expanding then requiring a macro is okay: because the dependency was
+-# met, the require phase can be a no-op.  For that matter, the outer
+-# macro can even require two helpers, where the first helper expands
+-# the macro, and the second helper indirectly requires the macro.
+-# Out-of-order expansion is only present if the inner macro is
+-# required by something that will be hoisted in front of where the
+-# direct expansion occurred.  In other words, we must be careful not
+-# to warn on:
+-#
+-# | m4_defun([TEST4], [4])
+-# | m4_defun([TEST5], [5 TEST4 m4_require([TEST4])])
+-# | TEST5 => 5 4
+-#
+-# or even the more complex:
+-#
+-# | m4_defun([TEST6], [6])
+-# | m4_defun([TEST7], [7 TEST6])
+-# | m4_defun([TEST8], [8 m4_require([TEST6])])
+-# | m4_defun([TEST9], [9 m4_require([TEST8])])
+-# | m4_defun([TEST10], [10 m4_require([TEST7]) m4_require([TEST9])])
+-# | TEST10 => 7 6 8 9 10
+-#
+-# So, to detect whether a require was direct or indirect, m4_defun and
+-# m4_require track the name of the macro that caused a diversion to be
+-# created (using the stack _m4_diverting, coupled with an O(1) lookup
+-# _m4_diverting([NAME])), and m4_provide stores the name associated
+-# with the diversion at which a macro was provided.  A require call is
+-# direct if it occurs within the same diversion where the macro was
+-# provided, or if the diversion associated with the providing context
+-# has been collected.
+-#
+-# The implementation of the warning involves tracking the set of
+-# macros which have been provided since the start of the outermost
+-# defun'd macro (the set is named _m4_provide).  When starting an
+-# outermost macro, the set is emptied; when a macro is provided, it is
+-# added to the set; when require expands the body of a macro, it is
+-# removed from the set; and when a macro is indirectly required, the
+-# set is checked.  If a macro is in the set, then it has been provided
+-# before it was required, and we satisfy dependencies by expanding the
+-# macro as if it had never been provided; in the example given above,
+-# this means we now output `1 2 3 1'.  Meanwhile, a warning is issued
+-# to inform the user that her macros trigger the bug in older autoconf
+-# versions, and that her output file now contains redundant contents
+-# (and possibly new problems, if the repeated macro was not
+-# idempotent).  Meanwhile, macros defined by m4_defun_once instead of
+-# m4_defun are idempotent, avoiding any warning or duplicate output.
+-#
+-#
+-# 2. Keeping track of the expansion stack
+-# =======================================
+-#
+-# When M4 expansion goes wrong it is often extremely hard to find the
+-# path amongst macros that drove to the failure.  What is needed is
+-# the stack of macro `calls'. One could imagine that GNU M4 would
+-# maintain a stack of macro expansions, unfortunately it doesn't, so
+-# we do it by hand.  This is of course extremely costly, but the help
+-# this stack provides is worth it.  Nevertheless to limit the
+-# performance penalty this is implemented only for m4_defun'd macros,
+-# not for define'd macros.
+-#
+-# Each time we enter an m4_defun'd macros, we add a definition in
+-# _m4_expansion_stack, and when we exit the macro, we remove it (thanks
+-# to pushdef/popdef).  m4_stack_foreach is used to print the expansion
+-# stack in the rare cases when it's needed.
+-#
+-# In addition, we want to detect circular m4_require dependencies.
+-# Each time we expand a macro FOO we define _m4_expanding(FOO); and
+-# m4_require(BAR) simply checks whether _m4_expanding(BAR) is defined.
+-
+-
+-# m4_expansion_stack
+-# ------------------
+-# Expands to the entire contents of the expansion stack.  The caller
+-# must supply a trailing newline.  This macro always prints a
+-# location; check whether _m4_expansion_stack is defined to filter out
+-# the case when no defun'd macro is in force.
+-m4_define([m4_expansion_stack],
+-[m4_stack_foreach_sep_lifo([_$0], [_$0_entry(], [)
+-])m4_location[: the top level]])
+-
+-# _m4_expansion_stack_entry(MACRO)
+-# --------------------------------
+-# Format an entry for MACRO found on the expansion stack.
+-m4_define([_m4_expansion_stack_entry],
+-[_m4_defn([m4_location($1)])[: $1 is expanded from...]])
+-
+-# m4_expansion_stack_push(MACRO)
+-# ------------------------------
+-# Form an entry of the expansion stack on entry to MACRO and push it.
+-m4_define([m4_expansion_stack_push],
+-[m4_pushdef([_m4_expansion_stack], [$1])])
+-
+-
+-# _m4_divert(GROW)
+-# ----------------
+-# This diversion is used by the m4_defun/m4_require machinery.  It is
+-# important to keep room before GROW because for each nested
+-# AC_REQUIRE we use an additional diversion (i.e., two m4_require's
+-# will use GROW - 2.  More than 3 levels has never seemed to be
+-# needed.)
+-#
+-# ...
+-# - GROW - 2
+-#   m4_require'd code, 2 level deep
+-# - GROW - 1
+-#   m4_require'd code, 1 level deep
+-# - GROW
+-#   m4_defun'd macros are elaborated here.
+-
+-m4_define([_m4_divert(GROW)],       10000)
+-
+-
+-# _m4_defun_pro(MACRO-NAME)
+-# -------------------------
+-# The prologue for Autoconf macros.
+-#
+-# This is called frequently, so minimize the number of macro invocations
+-# by avoiding dnl and m4_defn overhead.
+-m4_define([_m4_defun_pro],
+-[m4_ifdef([_m4_expansion_stack], [], [_m4_defun_pro_outer([$1])])]dnl
+-[m4_expansion_stack_push([$1])m4_pushdef([_m4_expanding($1)])])
+-
+-m4_define([_m4_defun_pro_outer],
+-[m4_set_delete([_m4_provide])]dnl
+-[m4_pushdef([_m4_diverting([$1])])m4_pushdef([_m4_diverting], [$1])]dnl
+-[m4_pushdef([_m4_divert_dump], m4_divnum)m4_divert_push([GROW])])
+-
+-# _m4_defun_epi(MACRO-NAME)
+-# -------------------------
+-# The Epilogue for Autoconf macros.  MACRO-NAME only helps tracing
+-# the PRO/EPI pairs.
+-#
+-# This is called frequently, so minimize the number of macro invocations
+-# by avoiding dnl and m4_popdef overhead.
+-m4_define([_m4_defun_epi],
+-[_m4_popdef([_m4_expanding($1)], [_m4_expansion_stack])]dnl
+-[m4_ifdef([_m4_expansion_stack], [], [_m4_defun_epi_outer([$1])])]dnl
+-[m4_provide([$1])])
+-
+-m4_define([_m4_defun_epi_outer],
+-[_m4_popdef([_m4_divert_dump], [_m4_diverting([$1])], [_m4_diverting])]dnl
+-[m4_divert_pop([GROW])m4_undivert([GROW])])
+-
+-
+-# _m4_divert_dump
+-# ---------------
+-# If blank, we are outside of any defun'd macro.  Otherwise, expands
+-# to the diversion number (not name) where require'd macros should be
+-# moved once completed.
+-m4_define([_m4_divert_dump])
+-
+-
+-# m4_divert_require(DIVERSION, NAME-TO-CHECK, [BODY-TO-EXPAND])
+-# -------------------------------------------------------------
+-# Same as m4_require, but BODY-TO-EXPAND goes into the named DIVERSION;
+-# requirements still go in the current diversion though.
+-#
+-m4_define([m4_divert_require],
+-[m4_ifdef([_m4_expanding($2)],
+-  [m4_fatal([$0: circular dependency of $2])])]dnl
+-[m4_if(_m4_divert_dump, [],
+-  [m4_fatal([$0($2): cannot be used outside of an m4_defun'd macro])])]dnl
+-[m4_provide_if([$2], [],
+-  [_m4_require_call([$2], [$3], _m4_divert([$1], [-]))])])
+-
+-
+-# m4_defun(NAME, EXPANSION, [MACRO = m4_define])
+-# ----------------------------------------------
+-# Define a macro NAME which automatically provides itself.  Add
+-# machinery so the macro automatically switches expansion to the
+-# diversion stack if it is not already using it, prior to EXPANSION.
+-# In this case, once finished, it will bring back all the code
+-# accumulated in the diversion stack.  This, combined with m4_require,
+-# achieves the topological ordering of macros.  We don't use this
+-# macro to define some frequently called macros that are not involved
+-# in ordering constraints, to save m4 processing.
+-#
+-# MACRO is an undocumented argument; when set to m4_pushdef, and NAME
+-# is already defined, the new definition is added to the pushdef
+-# stack, rather than overwriting the current definition.  It can thus
+-# be used to write self-modifying macros, which pop themselves to a
+-# previously m4_define'd definition so that subsequent use of the
+-# macro is faster.
+-m4_define([m4_defun],
+-[m4_define([m4_location($1)], m4_location)]dnl
+-[m4_default([$3], [m4_define])([$1],
+-  [_m4_defun_pro(]m4_dquote($[0])[)$2[]_m4_defun_epi(]m4_dquote($[0])[)])])
+-
+-
+-# m4_defun_init(NAME, INIT, COMMON)
+-# ---------------------------------
+-# Like m4_defun, but split EXPANSION into two portions: INIT which is
+-# done only the first time NAME is invoked, and COMMON which is
+-# expanded every time.
+-#
+-# For now, the COMMON definition is always m4_define'd, giving an even
+-# lighter-weight definition.  m4_defun allows self-providing, but once
+-# a macro is provided, m4_require no longer cares if it is m4_define'd
+-# or m4_defun'd.  m4_defun also provides location tracking to identify
+-# dependency bugs, but once the INIT has been expanded, we know there
+-# are no dependency bugs.  However, if a future use needs COMMON to be
+-# m4_defun'd, we can add a parameter, similar to the third parameter
+-# to m4_defun.
+-m4_define([m4_defun_init],
+-[m4_define([$1], [$3[]])m4_defun([$1],
+-   [$2[]_m4_popdef(]m4_dquote($[0])[)m4_indir(]m4_dquote($[0])dnl
+-[m4_if(]m4_dquote($[#])[, [0], [], ]m4_dquote([,$]@)[))], [m4_pushdef])])
+-
+-
+-# m4_defun_once(NAME, EXPANSION)
+-# ------------------------------
+-# Like m4_defun, but guarantee that EXPANSION only happens once
+-# (thereafter, using NAME is a no-op).
+-#
+-# If _m4_divert_dump is empty, we are called at the top level;
+-# otherwise, we must ensure that we are required in front of the
+-# current defun'd macro.  Use a helper macro so that EXPANSION need
+-# only occur once in the definition of NAME, since it might be large.
+-m4_define([m4_defun_once],
+-[m4_define([m4_location($1)], m4_location)]dnl
+-[m4_define([$1], [_m4_defun_once([$1], [$2], m4_if(_m4_divert_dump, [],
+-  [[_m4_defun_pro([$1])m4_unquote(], [)_m4_defun_epi([$1])]],
+-m4_ifdef([_m4_diverting([$1])], [-]), [-], [[m4_unquote(], [)]],
+-  [[_m4_require_call([$1],], [, _m4_divert_dump)]]))])])
+-
+-m4_define([_m4_defun_once],
+-[m4_pushdef([$1])$3[$2[]m4_provide([$1])]$4])
+-
+-
+-# m4_pattern_forbid(ERE, [WHY])
+-# -----------------------------
+-# Declare that no token matching the forbidden perl extended regular
+-# expression ERE should be seen in the output unless...
+-m4_define([m4_pattern_forbid], [])
+-
+-
+-# m4_pattern_allow(ERE)
+-# ---------------------
+-# ... that token also matches the allowed extended regular expression ERE.
+-# Both used via traces, by autom4te post-processing.
+-m4_define([m4_pattern_allow], [])
+-
+-
+-## --------------------------------- ##
+-## 11. Dependencies between macros.  ##
+-## --------------------------------- ##
+-
+-
+-# m4_before(THIS-MACRO-NAME, CALLED-MACRO-NAME)
+-# ---------------------------------------------
+-# Issue a warning if CALLED-MACRO-NAME was called before THIS-MACRO-NAME.
+-m4_define([m4_before],
+-[m4_provide_if([$2],
+-             [m4_warn([syntax], [$2 was called before $1])])])
+-
+-
+-# m4_require(NAME-TO-CHECK, [BODY-TO-EXPAND = NAME-TO-CHECK])
+-# -----------------------------------------------------------
+-# If NAME-TO-CHECK has never been expanded (actually, if it is not
+-# m4_provide'd), expand BODY-TO-EXPAND *before* the current macro
+-# expansion; follow the expansion with a newline.  Once expanded, emit
+-# it in _m4_divert_dump.  Keep track of the m4_require chain in
+-# _m4_expansion_stack.
+-#
+-# The normal cases are:
+-#
+-# - NAME-TO-CHECK == BODY-TO-EXPAND
+-#   Which you can use for regular macros with or without arguments, e.g.,
+-#     m4_require([AC_PROG_CC], [AC_PROG_CC])
+-#     m4_require([AC_CHECK_HEADERS(threads.h)], [AC_CHECK_HEADERS(threads.h)])
+-#   which is just the same as
+-#     m4_require([AC_PROG_CC])
+-#     m4_require([AC_CHECK_HEADERS(threads.h)])
+-#
+-# - BODY-TO-EXPAND == m4_indir([NAME-TO-CHECK])
+-#   In the case of macros with irregular names.  For instance:
+-#     m4_require([AC_LANG_COMPILER(C)], [indir([AC_LANG_COMPILER(C)])])
+-#   which means `if the macro named `AC_LANG_COMPILER(C)' (the parens are
+-#   part of the name, it is not an argument) has not been run, then
+-#   call it.'
+-#   Had you used
+-#     m4_require([AC_LANG_COMPILER(C)], [AC_LANG_COMPILER(C)])
+-#   then m4_require would have tried to expand `AC_LANG_COMPILER(C)', i.e.,
+-#   call the macro `AC_LANG_COMPILER' with `C' as argument.
+-#
+-#   You could argue that `AC_LANG_COMPILER', when it receives an argument
+-#   such as `C' should dispatch the call to `AC_LANG_COMPILER(C)'.  But this
+-#   `extension' prevents `AC_LANG_COMPILER' from having actual arguments that
+-#   it passes to `AC_LANG_COMPILER(C)'.
+-#
+-# This is called frequently, so minimize the number of macro invocations
+-# by avoiding dnl and other overhead on the common path.
+-m4_define([m4_require],
+-[m4_ifdef([_m4_expanding($1)],
+-  [m4_fatal([$0: circular dependency of $1])])]dnl
+-[m4_if(_m4_divert_dump, [],
+-  [m4_fatal([$0($1): cannot be used outside of an ]dnl
+-m4_if([$0], [m4_require], [[m4_defun]], [[AC_DEFUN]])['d macro])])]dnl
+-[m4_provide_if([$1], [m4_set_contains([_m4_provide], [$1],
+-    [_m4_require_check([$1], _m4_defn([m4_provide($1)]), [$0])], [m4_ignore])],
+-  [_m4_require_call])([$1], [$2], _m4_divert_dump)])
+-
+-
+-# _m4_require_call(NAME-TO-CHECK, [BODY-TO-EXPAND = NAME-TO-CHECK],
+-#                  DIVERSION-NUMBER)
+-# -----------------------------------------------------------------
+-# If m4_require decides to expand the body, it calls this macro.  The
+-# expansion is placed in DIVERSION-NUMBER.
+-#
+-# This is called frequently, so minimize the number of macro invocations
+-# by avoiding dnl and other overhead on the common path.
+-# The use of a witness macro protecting the warning allows aclocal
+-# to silence any warnings when probing for what macros are required
+-# and must therefore be located, when using the Autoconf-without-aclocal-m4
+-# autom4te language.  For more background, see:
+-# https://lists.gnu.org/archive/html/automake-patches/2012-11/msg00035.html
+-m4_define([_m4_require_call],
+-[m4_pushdef([_m4_divert_grow], m4_decr(_m4_divert_grow))]dnl
+-[m4_pushdef([_m4_diverting([$1])])m4_pushdef([_m4_diverting], [$1])]dnl
+-[m4_divert_push(_m4_divert_grow, [-])]dnl
+-[m4_if([$2], [], [$1], [$2])
+-m4_provide_if([$1], [m4_set_remove([_m4_provide], [$1])],
+-  [m4_ifndef([m4_require_silent_probe],
+-    [m4_warn([syntax], [$1 is m4_require'd but not m4_defun'd])])])]dnl
+-[_m4_divert_raw($3)_m4_undivert(_m4_divert_grow)]dnl
+-[m4_divert_pop(_m4_divert_grow)_m4_popdef([_m4_divert_grow],
+-[_m4_diverting([$1])], [_m4_diverting])])
+-
+-
+-# _m4_require_check(NAME-TO-CHECK, OWNER, CALLER)
+-# -----------------------------------------------
+-# NAME-TO-CHECK has been identified as previously expanded in the
+-# diversion owned by OWNER.  If this is a problem, warn on behalf of
+-# CALLER and return _m4_require_call; otherwise return m4_ignore.
+-m4_define([_m4_require_check],
+-[m4_if(_m4_defn([_m4_diverting]), [$2], [m4_ignore],
+-       m4_ifdef([_m4_diverting([$2])], [-]), [-], [m4_warn([syntax],
+-   [$3: `$1' was expanded before it was required
+-https://www.gnu.org/software/autoconf/manual/autoconf.html#Expanded-Before-Required])_m4_require_call],
+-       [m4_ignore])])
+-
+-
+-# _m4_divert_grow
+-# ---------------
+-# The counter for _m4_require_call.
+-m4_define([_m4_divert_grow], _m4_divert([GROW]))
+-
+-
+-# m4_expand_once(TEXT, [WITNESS = TEXT])
+-# --------------------------------------
+-# If TEXT has never been expanded, expand it *here*.  Use WITNESS as
+-# as a memory that TEXT has already been expanded.
+-m4_define([m4_expand_once],
+-[m4_provide_if(m4_default_quoted([$2], [$1]),
+-             [],
+-             [m4_provide(m4_default_quoted([$2], [$1]))[]$1])])
+-
+-
+-# m4_provide(MACRO-NAME)
+-# ----------------------
+-m4_define([m4_provide],
+-[m4_ifdef([m4_provide($1)], [],
+-[m4_set_add([_m4_provide], [$1], [m4_define([m4_provide($1)],
+-  m4_ifdef([_m4_diverting], [_m4_defn([_m4_diverting])]))])])])
+-
+-
+-# m4_provide_if(MACRO-NAME, IF-PROVIDED, IF-NOT-PROVIDED)
+-# -------------------------------------------------------
+-# If MACRO-NAME is provided do IF-PROVIDED, else IF-NOT-PROVIDED.
+-# The purpose of this macro is to provide the user with a means to
+-# check macros which are provided without letting her know how the
+-# information is coded.
+-m4_define([m4_provide_if],
+-[m4_ifdef([m4_provide($1)],
+-        [$2], [$3])])
+-
+-
+-## --------------------- ##
+-## 12. Text processing.  ##
+-## --------------------- ##
+-
+-
+-# m4_cr_letters
+-# m4_cr_LETTERS
+-# m4_cr_Letters
+-# -------------
+-m4_define([m4_cr_letters], [abcdefghijklmnopqrstuvwxyz])
+-m4_define([m4_cr_LETTERS], [ABCDEFGHIJKLMNOPQRSTUVWXYZ])
+-m4_define([m4_cr_Letters],
+-m4_defn([m4_cr_letters])dnl
+-m4_defn([m4_cr_LETTERS])dnl
+-)
+-
+-
+-# m4_cr_digits
+-# ------------
+-m4_define([m4_cr_digits], [0123456789])
+-
+-
+-# m4_cr_alnum
+-# -----------
+-m4_define([m4_cr_alnum],
+-m4_defn([m4_cr_Letters])dnl
+-m4_defn([m4_cr_digits])dnl
+-)
+-
+-
+-# m4_cr_symbols1
+-# m4_cr_symbols2
+-# --------------
+-m4_define([m4_cr_symbols1],
+-m4_defn([m4_cr_Letters])dnl
+-_)
+-
+-m4_define([m4_cr_symbols2],
+-m4_defn([m4_cr_symbols1])dnl
+-m4_defn([m4_cr_digits])dnl
+-)
+-
+-# m4_cr_all
+-# ---------
+-# The character range representing everything, with `-' as the last
+-# character, since it is special to m4_translit.  Use with care, because
+-# it contains characters special to M4 (fortunately, both ASCII and EBCDIC
+-# have [] in order, so m4_defn([m4_cr_all]) remains a valid string).  It
+-# also contains characters special to terminals, so it should never be
+-# displayed in an error message.  Also, attempts to map [ and ] to other
+-# characters via m4_translit must deal with the fact that m4_translit does
+-# not add quotes to the output.
+-#
+-# In EBCDIC, $ is immediately followed by *, which leads to problems
+-# if m4_cr_all is inlined into a macro definition; so swap them.
+-#
+-# It is mainly useful in generating inverted character range maps, for use
+-# in places where m4_translit is faster than an equivalent m4_bpatsubst;
+-# the regex `[^a-z]' is equivalent to:
+-#  m4_translit(m4_dquote(m4_defn([m4_cr_all])), [a-z])
+-m4_define([m4_cr_all],
+-m4_translit(m4_dquote(m4_format(m4_dquote(m4_for(
+-  ,1,255,,[[%c]]))m4_for([i],1,255,,[,i]))), [$*-], [*$])-)
+-
+-
+-# _m4_define_cr_not(CATEGORY)
+-# ---------------------------
+-# Define m4_cr_not_CATEGORY as the inverse of m4_cr_CATEGORY.
+-m4_define([_m4_define_cr_not],
+-[m4_define([m4_cr_not_$1],
+-         m4_translit(m4_dquote(m4_defn([m4_cr_all])),
+-                     m4_defn([m4_cr_$1])))])
+-
+-
+-# m4_cr_not_letters
+-# m4_cr_not_LETTERS
+-# m4_cr_not_Letters
+-# m4_cr_not_digits
+-# m4_cr_not_alnum
+-# m4_cr_not_symbols1
+-# m4_cr_not_symbols2
+-# ------------------
+-# Inverse character sets
+-_m4_define_cr_not([letters])
+-_m4_define_cr_not([LETTERS])
+-_m4_define_cr_not([Letters])
+-_m4_define_cr_not([digits])
+-_m4_define_cr_not([alnum])
+-_m4_define_cr_not([symbols1])
+-_m4_define_cr_not([symbols2])
+-
+-
+-# m4_newline([STRING])
+-# --------------------
+-# Expands to a newline, possibly followed by STRING.  Exists mostly for
+-# formatting reasons.
+-m4_define([m4_newline], [
+-$1])
+-
+-
+-# m4_re_escape(STRING)
+-# --------------------
+-# Escape RE active characters in STRING.
+-m4_define([m4_re_escape],
+-[m4_bpatsubst([$1],
+-            [[][*+.?\^$]], [\\\&])])
+-
+-
+-# m4_re_string
+-# ------------
+-# Regexp for `[a-zA-Z_0-9]*'
+-# m4_dquote provides literal [] for the character class.
+-m4_define([m4_re_string],
+-m4_dquote(m4_defn([m4_cr_symbols2]))dnl
+-[*]dnl
+-)
+-
+-
+-# m4_re_word
+-# ----------
+-# Regexp for `[a-zA-Z_][a-zA-Z_0-9]*'
+-m4_define([m4_re_word],
+-m4_dquote(m4_defn([m4_cr_symbols1]))dnl
+-m4_defn([m4_re_string])dnl
+-)
+-
+-
+-# m4_tolower(STRING)
+-# m4_toupper(STRING)
+-# ------------------
+-# These macros convert STRING to lowercase or uppercase.
+-#
+-# Rather than expand the m4_defn each time, we inline them up front.
+-m4_define([m4_tolower],
+-[m4_translit([[$1]], ]m4_dquote(m4_defn([m4_cr_LETTERS]))[,
+-                   ]m4_dquote(m4_defn([m4_cr_letters]))[)])
+-m4_define([m4_toupper],
+-[m4_translit([[$1]], ]m4_dquote(m4_defn([m4_cr_letters]))[,
+-                   ]m4_dquote(m4_defn([m4_cr_LETTERS]))[)])
+-
+-
+-# m4_split(STRING, [REGEXP])
+-# --------------------------
+-# Split STRING into an m4 list of quoted elements.  The elements are
+-# quoted with [ and ].  Beginning spaces and end spaces *are kept*.
+-# Use m4_strip to remove them.
+-#
+-# REGEXP specifies where to split.  Default is [\t ]+.
+-#
+-# If STRING is empty, the result is an empty list.
+-#
+-# Pay attention to the m4_changequotes.  When m4 reads the definition of
+-# m4_split, it still has quotes set to [ and ].  Luckily, these are matched
+-# in the macro body, so the definition is stored correctly.  Use the same
+-# alternate quotes as m4_noquote; it must be unlikely to appear in $1.
+-#
+-# Also, notice that $1 is quoted twice, since we want the result to
+-# be quoted.  Then you should understand that the argument of
+-# patsubst is -=<{(STRING)}>=- (i.e., with additional -=<{( and )}>=-).
+-#
+-# This macro is safe on active symbols, i.e.:
+-#   m4_define(active, ACTIVE)
+-#   m4_split([active active ])end
+-#   => [active], [active], []end
+-#
+-# Optimize on regex of ` ' (space), since m4_foreach_w already guarantees
+-# that the list contains single space separators, and a common case is
+-# splitting a single-element list.  This macro is called frequently,
+-# so avoid unnecessary dnl inside the definition.
+-m4_define([m4_split],
+-[m4_if([$1], [], [],
+-       [$2], [ ], [m4_if(m4_index([$1], [ ]), [-1], [[[$1]]],
+-                       [_$0([$1], [$2], [, ])])],
+-       [$2], [], [_$0([$1], [[         ]+], [, ])],
+-       [_$0([$1], [$2], [, ])])])
+-
+-m4_define([_m4_split],
+-[m4_changequote([-=<{(],[)}>=-])]dnl
+-[[m4_bpatsubst(-=<{(-=<{($1)}>=-)}>=-, -=<{($2)}>=-,
+-             -=<{(]$3[)}>=-)]m4_changequote([, ])])
+-
+-
+-# m4_chomp(STRING)
+-# m4_chomp_all(STRING)
+-# --------------------
+-# Return STRING quoted, but without a trailing newline.  m4_chomp
+-# removes at most one newline, while m4_chomp_all removes all
+-# consecutive trailing newlines.  Embedded newlines are not touched,
+-# and a trailing backslash-newline leaves just a trailing backslash.
+-#
+-# m4_bregexp is slower than m4_index, and we don't always want to
+-# remove all newlines; hence the two variants.  We massage characters
+-# to give a nicer pattern to match, particularly since m4_bregexp is
+-# line-oriented.  Both versions must guarantee a match, to avoid bugs
+-# with precision -1 in m4_format in older m4.
+-m4_define([m4_chomp],
+-[m4_format([[%.*s]], m4_index(m4_translit([[$1]], [
+-/.], [/  ])[./.], [/.]), [$1])])
+-
+-m4_define([m4_chomp_all],
+-[m4_format([[%.*s]], m4_bregexp(m4_translit([[$1]], [
+-/], [/ ]), [/*$]), [$1])])
+-
+-
+-# m4_flatten(STRING)
+-# ------------------
+-# If STRING contains end of lines, replace them with spaces.  If there
+-# are backslashed end of lines, remove them.  This macro is safe with
+-# active symbols.
+-#    m4_define(active, ACTIVE)
+-#    m4_flatten([active
+-#    act\
+-#    ive])end
+-#    => active activeend
+-#
+-# In m4, m4_bpatsubst is expensive, so first check for a newline.
+-m4_define([m4_flatten],
+-[m4_if(m4_index([$1], [
+-]), [-1], [[$1]],
+-       [m4_translit(m4_bpatsubst([[[$1]]], [\\
+-]), [
+-], [ ])])])
+-
+-
+-# m4_strip(STRING)
+-# ----------------
+-# Expands into STRING with tabs and spaces singled out into a single
+-# space, and removing leading and trailing spaces.
+-#
+-# This macro is robust to active symbols.
+-#    m4_define(active, ACTIVE)
+-#    m4_strip([  active <tab> <tab>active ])end
+-#    => active activeend
+-#
+-# First, notice that we guarantee trailing space.  Why?  Because regular
+-# expressions are greedy, and `.* ?' would always group the space into the
+-# .* portion.  The algorithm is simpler by avoiding `?' at the end.  The
+-# algorithm correctly strips everything if STRING is just ` '.
+-#
+-# Then notice the second pattern: it is in charge of removing the
+-# leading/trailing spaces.  Why not just `[^ ]'?  Because they are
+-# applied to over-quoted strings, i.e. more or less [STRING], due
+-# to the limitations of m4_bpatsubsts.  So the leading space in STRING
+-# is the *second* character; equally for the trailing space.
+-m4_define([m4_strip],
+-[m4_bpatsubsts([$1 ],
+-             [[        ]+], [ ],
+-             [^. ?\(.*\) .$], [[[\1]]])])
+-
+-
+-# m4_normalize(STRING)
+-# --------------------
+-# Apply m4_flatten and m4_strip to STRING.
+-#
+-# The argument is quoted, so that the macro is robust to active symbols:
+-#
+-#    m4_define(active, ACTIVE)
+-#    m4_normalize([  act\
+-#    ive
+-#    active ])end
+-#    => active activeend
+-
+-m4_define([m4_normalize],
+-[m4_strip(m4_flatten([$1]))])
+-
+-
+-
+-# m4_join(SEP, ARG1, ARG2...)
+-# ---------------------------
+-# Produce ARG1SEPARG2...SEPARGn.  Avoid back-to-back SEP when a given ARG
+-# is the empty string.  No expansion is performed on SEP or ARGs.
+-#
+-# Since the number of arguments to join can be arbitrarily long, we
+-# want to avoid having more than one $@ in the macro definition;
+-# otherwise, the expansion would require twice the memory of the already
+-# long list.  Hence, m4_join merely looks for the first non-empty element,
+-# and outputs just that element; while _m4_join looks for all non-empty
+-# elements, and outputs them following a separator.  The final trick to
+-# note is that we decide between recursing with $0 or _$0 based on the
+-# nested m4_if ending with `_'.
+-#
+-# Please keep foreach.m4 in sync with any adjustments made here.
+-m4_define([m4_join],
+-[m4_if([$#], [1], [],
+-       [$#], [2], [[$2]],
+-       [m4_if([$2], [], [], [[$2]_])$0([$1], m4_shift2($@))])])
+-m4_define([_m4_join],
+-[m4_if([$#$2], [2], [],
+-       [m4_if([$2], [], [], [[$1$2]])$0([$1], m4_shift2($@))])])
+-
+-# m4_joinall(SEP, ARG1, ARG2...)
+-# ------------------------------
+-# Produce ARG1SEPARG2...SEPARGn.  An empty ARG results in back-to-back SEP.
+-# No expansion is performed on SEP or ARGs.
+-#
+-# Please keep foreach.m4 in sync with any adjustments made here.
+-m4_define([m4_joinall], [[$2]_$0([$1], m4_shift($@))])
+-m4_define([_m4_joinall],
+-[m4_if([$#], [2], [], [[$1$3]$0([$1], m4_shift2($@))])])
+-
+-# m4_combine([SEPARATOR], PREFIX-LIST, [INFIX], SUFFIX...)
+-# --------------------------------------------------------
+-# Produce the pairwise combination of every element in the quoted,
+-# comma-separated PREFIX-LIST with every element from the SUFFIX arguments.
+-# Each pair is joined with INFIX, and pairs are separated by SEPARATOR.
+-# No expansion occurs on SEPARATOR, INFIX, or elements of either list.
+-#
+-# For example:
+-#   m4_combine([, ], [[a], [b], [c]], [-], [1], [2], [3])
+-#   => a-1, a-2, a-3, b-1, b-2, b-3, c-1, c-2, c-3
+-#
+-# This definition is a bit hairy; the thing to realize is that we want
+-# to construct m4_map_args_sep([[prefix$3]], [], [[$1]], m4_shift3($@))
+-# as the inner loop, using each prefix generated by the outer loop,
+-# and without recalculating m4_shift3 every outer iteration.
+-m4_define([m4_combine],
+-[m4_if([$2], [], [], m4_eval([$# > 3]), [1],
+-[m4_map_args_sep([m4_map_args_sep(m4_dquote(], [)[[$3]], [], [[$1]],]]]dnl
+-[m4_dquote(m4_dquote(m4_shift3($@)))[[)], [[$1]], $2)])])
+-
+-
+-# m4_append(MACRO-NAME, STRING, [SEPARATOR])
+-# ------------------------------------------
+-# Redefine MACRO-NAME to hold its former content plus `SEPARATOR`'STRING'
+-# at the end.  It is valid to use this macro with MACRO-NAME undefined,
+-# in which case no SEPARATOR is added.  Be aware that the criterion is
+-# `not being defined', and not `not being empty'.
+-#
+-# Note that neither STRING nor SEPARATOR are expanded here; rather, when
+-# you expand MACRO-NAME, they will be expanded at that point in time.
+-#
+-# This macro is robust to active symbols.  It can be used to grow
+-# strings.
+-#
+-#    | m4_define(active, ACTIVE)dnl
+-#    | m4_append([sentence], [This is an])dnl
+-#    | m4_append([sentence], [ active ])dnl
+-#    | m4_append([sentence], [symbol.])dnl
+-#    | sentence
+-#    | m4_undefine([active])dnl
+-#    | sentence
+-#    => This is an ACTIVE symbol.
+-#    => This is an active symbol.
+-#
+-# It can be used to define hooks.
+-#
+-#    | m4_define(active, ACTIVE)dnl
+-#    | m4_append([hooks], [m4_define([act1], [act2])])dnl
+-#    | m4_append([hooks], [m4_define([act2], [active])])dnl
+-#    | m4_undefine([active])dnl
+-#    | act1
+-#    | hooks
+-#    | act1
+-#    => act1
+-#    =>
+-#    => active
+-#
+-# It can also be used to create lists, although this particular usage was
+-# broken prior to autoconf 2.62.
+-#    | m4_append([list], [one], [, ])dnl
+-#    | m4_append([list], [two], [, ])dnl
+-#    | m4_append([list], [three], [, ])dnl
+-#    | list
+-#    | m4_dquote(list)
+-#    => one, two, three
+-#    => [one],[two],[three]
+-#
+-# Note that m4_append can benefit from amortized O(n) m4 behavior, if
+-# the underlying m4 implementation is smart enough to avoid copying existing
+-# contents when enlarging a macro's definition into any pre-allocated storage
+-# (m4 1.4.x unfortunately does not implement this optimization).  We do
+-# not implement m4_prepend, since it is inherently O(n^2) (pre-allocated
+-# storage only occurs at the end of a macro, so the existing contents must
+-# always be moved).
+-#
+-# Use _m4_defn for speed.
+-m4_define([m4_append],
+-[m4_define([$1], m4_ifdef([$1], [_m4_defn([$1])[$3]])[$2])])
+-
+-
+-# m4_append_uniq(MACRO-NAME, STRING, [SEPARATOR], [IF-UNIQ], [IF-DUP])
+-# --------------------------------------------------------------------
+-# Like `m4_append', but append only if not yet present.  Additionally,
+-# expand IF-UNIQ if STRING was appended, or IF-DUP if STRING was already
+-# present.  Also, warn if SEPARATOR is not empty and occurs within STRING,
+-# as the algorithm no longer guarantees uniqueness.
+-#
+-# Note that while m4_append can be O(n) (depending on the quality of the
+-# underlying M4 implementation), m4_append_uniq is inherently O(n^2)
+-# because each append operation searches the entire string.
+-m4_define([m4_append_uniq],
+-[m4_ifval([$3], [m4_if(m4_index([$2], [$3]), [-1], [],
+-                     [m4_warn([syntax],
+-                              [$0: `$2' contains `$3'])])])_$0($@)])
+-m4_define([_m4_append_uniq],
+-[m4_ifdef([$1],
+-        [m4_if(m4_index([$3]_m4_defn([$1])[$3], [$3$2$3]), [-1],
+-               [m4_append([$1], [$2], [$3])$4], [$5])],
+-        [m4_define([$1], [$2])$4])])
+-
+-# m4_append_uniq_w(MACRO-NAME, STRINGS)
+-# -------------------------------------
+-# For each of the words in the whitespace separated list STRINGS, append
+-# only the unique strings to the definition of MACRO-NAME.
+-#
+-# Use _m4_defn for speed.
+-m4_define([m4_append_uniq_w],
+-[m4_map_args_w([$2], [_m4_append_uniq([$1],], [, [ ])])])
+-
+-
+-# m4_escape(STRING)
+-# -----------------
+-# Output quoted STRING, but with embedded #, $, [ and ] turned into
+-# quadrigraphs.
+-#
+-# It is faster to check if STRING is already good using m4_translit
+-# than to blindly perform four m4_bpatsubst.
+-#
+-# Because the translit is stripping quotes, it must also neutralize
+-# anything that might be in a macro name, as well as comments, commas,
+-# and parentheses.  All the problem characters are unified so that a
+-# single m4_index can scan the result.
+-#
+-# Rather than expand m4_defn every time m4_escape is expanded, we
+-# inline its expansion up front.
+-m4_define([m4_escape],
+-[m4_if(m4_index(m4_translit([$1],
+-   [[]#,()]]m4_dquote(m4_defn([m4_cr_symbols2]))[, [$$$]), [$]),
+-  [-1], [m4_echo], [_$0])([$1])])
+-
+-m4_define([_m4_escape],
+-[m4_changequote([-=<{(],[)}>=-])]dnl
+-[m4_bpatsubst(m4_bpatsubst(m4_bpatsubst(m4_bpatsubst(
+-        -=<{(-=<{(-=<{(-=<{(-=<{($1)}>=-)}>=-)}>=-)}>=-)}>=-,
+-      -=<{(#)}>=-, -=<{(@%:@)}>=-),
+-      -=<{(\[)}>=-, -=<{(@<:@)}>=-),
+-    -=<{(\])}>=-, -=<{(@:>@)}>=-),
+-  -=<{(\$)}>=-, -=<{(@S|@)}>=-)m4_changequote([,])])
+-
+-
+-# m4_text_wrap(STRING, [PREFIX], [FIRST-PREFIX], [WIDTH])
+-# -------------------------------------------------------
+-# Expands into STRING wrapped to hold in WIDTH columns (default = 79).
+-# If PREFIX is given, each line is prefixed with it.  If FIRST-PREFIX is
+-# specified, then the first line is prefixed with it.  As a special case,
+-# if the length of FIRST-PREFIX is greater than that of PREFIX, then
+-# FIRST-PREFIX will be left alone on the first line.
+-#
+-# No expansion occurs on the contents STRING, PREFIX, or FIRST-PREFIX,
+-# although quadrigraphs are correctly recognized.  More precisely,
+-# you may redefine m4_qlen to recognize whatever escape sequences that
+-# you will post-process.
+-#
+-# Typical outputs are:
+-#
+-# m4_text_wrap([Short string */], [   ], [/* ], 20)
+-#  => /* Short string */
+-#
+-# m4_text_wrap([Much longer string */], [   ], [/* ], 20)
+-#  => /* Much longer
+-#  =>    string */
+-#
+-# m4_text_wrap([Short doc.], [          ], [  --short ], 30)
+-#  =>   --short Short doc.
+-#
+-# m4_text_wrap([Short doc.], [          ], [  --too-wide ], 30)
+-#  =>   --too-wide
+-#  =>           Short doc.
+-#
+-# m4_text_wrap([Super long documentation.], [          ], [  --too-wide ], 30)
+-#  =>   --too-wide
+-#  =>      Super long
+-#  =>      documentation.
+-#
+-# FIXME: there is no checking of a longer PREFIX than WIDTH, but do
+-# we really want to bother with people trying each single corner
+-# of a software?
+-#
+-# This macro does not leave a trailing space behind the last word of a line,
+-# which complicates it a bit.  The algorithm is otherwise stupid and simple:
+-# all the words are preceded by m4_Separator which is defined to empty for
+-# the first word, and then ` ' (single space) for all the others.
+-#
+-# The algorithm uses a helper that uses $2 through $4 directly, rather than
+-# using local variables, to avoid m4_defn overhead, or expansion swallowing
+-# any $.  It also bypasses m4_popdef overhead with _m4_popdef since no user
+-# macro expansion occurs in the meantime.  Also, the definition is written
+-# with m4_do, to avoid time wasted on dnl during expansion (since this is
+-# already a time-consuming macro).
+-m4_define([m4_text_wrap],
+-[_$0(m4_escape([$1]), [$2], m4_default_quoted([$3], [$2]),
+-     m4_default_quoted([$4], [79]))])
+-
+-m4_define([_m4_text_wrap],
+-m4_do(dnl set up local variables, to avoid repeated calculations
+-[[m4_pushdef([m4_Indent], m4_qlen([$2]))]],
+-[[m4_pushdef([m4_Cursor], m4_qlen([$3]))]],
+-[[m4_pushdef([m4_Separator], [m4_define([m4_Separator], [ ])])]],
+-dnl expand the first prefix, then check its length vs. regular prefix
+-dnl same length: nothing special
+-dnl prefix1 longer: output on line by itself, and reset cursor
+-dnl prefix1 shorter: pad to length of prefix, and reset cursor
+-[[[$3]m4_cond([m4_Cursor], m4_Indent, [],
+-            [m4_eval(m4_Cursor > m4_Indent)], [1], [
+-[$2]m4_define([m4_Cursor], m4_Indent)],
+-            [m4_format([%*s], m4_max([0],
+-  m4_eval(m4_Indent - m4_Cursor)), [])m4_define([m4_Cursor], m4_Indent)])]],
+-dnl now, for each word, compute the cursor after the word is output, then
+-dnl check if the cursor would exceed the wrap column
+-dnl if so, reset cursor, and insert newline and prefix
+-dnl if not, insert the separator (usually a space)
+-dnl either way, insert the word
+-[[m4_map_args_w([$1], [$0_word(], [, [$2], [$4])])]],
+-dnl finally, clean up the local variables
+-[[_m4_popdef([m4_Separator], [m4_Cursor], [m4_Indent])]]))
+-
+-m4_define([_m4_text_wrap_word],
+-[m4_define([m4_Cursor], m4_eval(m4_Cursor + m4_qlen([$1]) + 1))]dnl
+-[m4_if(m4_eval(m4_Cursor > ([$3])),
+-      [1], [m4_define([m4_Cursor], m4_eval(m4_Indent + m4_qlen([$1]) + 1))
+-[$2]],
+-      [m4_Separator[]])[$1]])
+-
+-# m4_text_box(MESSAGE, [FRAME-CHARACTER = `-'])
+-# ---------------------------------------------
+-# Turn MESSAGE into:
+-#  ## ------- ##
+-#  ## MESSAGE ##
+-#  ## ------- ##
+-# using FRAME-CHARACTER in the border.
+-#
+-# Quadrigraphs are correctly recognized.  More precisely, you may
+-# redefine m4_qlen to recognize whatever escape sequences that you
+-# will post-process.
+-m4_define([m4_text_box],
+-[m4_pushdef([m4_Border],
+-          m4_translit(m4_format([[[%*s]]], m4_decr(m4_qlen(_m4_expand([$1
+-]))), []), [ ], m4_default_quoted([$2], [-])))]dnl
+-[[##] _m4_defn([m4_Border]) [##]
+-[##] $1 [##]
+-[##] _m4_defn([m4_Border]) [##]_m4_popdef([m4_Border])])
+-
+-
+-# m4_qlen(STRING)
+-# ---------------
+-# Expands to the length of STRING after autom4te converts all quadrigraphs.
+-#
+-# If you use some other means of post-processing m4 output rather than
+-# autom4te, then you may redefine this macro to recognize whatever
+-# escape sequences your post-processor will handle.  For that matter,
+-# m4_define([m4_qlen], m4_defn([m4_len])) is sufficient if you don't
+-# do any post-processing.
+-#
+-# Avoid bpatsubsts for the common case of no quadrigraphs.  Cache
+-# results, as configure scripts tend to ask about lengths of common
+-# strings like `/*' and `*/' rather frequently.  Minimize the number
+-# of times that $1 occurs in m4_qlen, so there is less text to parse
+-# on a cache hit.
+-m4_define([m4_qlen],
+-[m4_ifdef([$0-$1], [_m4_defn([$0-]], [_$0(])[$1])])
+-m4_define([_m4_qlen],
+-[m4_define([m4_qlen-$1],
+-m4_if(m4_index([$1], [@]), [-1], [m4_len([$1])],
+-      [m4_len(m4_bpatsubst([[$1]],
+-                         [@\(\(<:\|:>\|S|\|%:\|\{:\|:\}\)\(@\)\|&t@\)],
+-                         [\3]))]))_m4_defn([m4_qlen-$1])])
+-
+-# m4_copyright_condense(TEXT)
+-# ---------------------------
+-# Condense the copyright notice in TEXT to only display the final
+-# year, wrapping the results to fit in 80 columns.
+-m4_define([m4_copyright_condense],
+-[m4_text_wrap(m4_bpatsubst(m4_flatten([[$1]]),
+-[(C)[-         ,0-9]*\([1-9][0-9][0-9][0-9]\)], [(C) \1]))])
+-
+-## ----------------------- ##
+-## 13. Number processing.  ##
+-## ----------------------- ##
+-
+-# m4_cmp(A, B)
+-# ------------
+-# Compare two integer expressions.
+-# A < B -> -1
+-# A = B ->  0
+-# A > B ->  1
+-m4_define([m4_cmp],
+-[m4_eval((([$1]) > ([$2])) - (([$1]) < ([$2])))])
+-
+-
+-# m4_list_cmp(A, B)
+-# -----------------
+-#
+-# Compare the two lists of integer expressions A and B.  For instance:
+-#   m4_list_cmp([1, 0],     [1])    ->  0
+-#   m4_list_cmp([1, 0],     [1, 0]) ->  0
+-#   m4_list_cmp([1, 2],     [1, 0]) ->  1
+-#   m4_list_cmp([1, 2, 3],  [1, 2]) ->  1
+-#   m4_list_cmp([1, 2, -3], [1, 2]) -> -1
+-#   m4_list_cmp([1, 0],     [1, 2]) -> -1
+-#   m4_list_cmp([1],        [1, 2]) -> -1
+-#   m4_define([xa], [oops])dnl
+-#   m4_list_cmp([[0xa]],    [5+5])  -> 0
+-#
+-# Rather than face the overhead of m4_case, we use a helper function whose
+-# expansion includes the name of the macro to invoke on the tail, either
+-# m4_ignore or m4_unquote.  This is particularly useful when comparing
+-# long lists, since less text is being expanded for deciding when to end
+-# recursion.  The recursion is between a pair of macros that alternate
+-# which list is trimmed by one element; this is more efficient than
+-# calling m4_cdr on both lists from a single macro.  Guarantee exactly
+-# one expansion of both lists' side effects.
+-#
+-# Please keep foreach.m4 in sync with any adjustments made here.
+-m4_define([m4_list_cmp],
+-[_$0_raw(m4_dquote($1), m4_dquote($2))])
+-
+-m4_define([_m4_list_cmp_raw],
+-[m4_if([$1], [$2], [0], [_m4_list_cmp_1([$1], $2)])])
+-
+-m4_define([_m4_list_cmp],
+-[m4_if([$1], [], [0m4_ignore], [$2], [0], [m4_unquote], [$2m4_ignore])])
+-
+-m4_define([_m4_list_cmp_1],
+-[_m4_list_cmp_2([$2], [m4_shift2($@)], $1)])
+-
+-m4_define([_m4_list_cmp_2],
+-[_m4_list_cmp([$1$3], m4_cmp([$3+0], [$1+0]))(
+-  [_m4_list_cmp_1(m4_dquote(m4_shift3($@)), $2)])])
+-
+-# m4_max(EXPR, ...)
+-# m4_min(EXPR, ...)
+-# -----------------
+-# Return the decimal value of the maximum (or minimum) in a series of
+-# integer expressions.
+-#
+-# M4 1.4.x doesn't provide ?:.  Hence this huge m4_eval.  Avoid m4_eval
+-# if both arguments are identical, but be aware of m4_max(0xa, 10) (hence
+-# the use of <=, not just <, in the second multiply).
+-#
+-# Please keep foreach.m4 in sync with any adjustments made here.
+-m4_define([m4_max],
+-[m4_if([$#], [0], [m4_fatal([too few arguments to $0])],
+-       [$#], [1], [m4_eval([$1])],
+-       [$#$1], [2$2], [m4_eval([$1])],
+-       [$#], [2], [_$0($@)],
+-       [_m4_minmax([_$0], $@)])])
+-
+-m4_define([_m4_max],
+-[m4_eval((([$1]) > ([$2])) * ([$1]) + (([$1]) <= ([$2])) * ([$2]))])
+-
+-m4_define([m4_min],
+-[m4_if([$#], [0], [m4_fatal([too few arguments to $0])],
+-       [$#], [1], [m4_eval([$1])],
+-       [$#$1], [2$2], [m4_eval([$1])],
+-       [$#], [2], [_$0($@)],
+-       [_m4_minmax([_$0], $@)])])
+-
+-m4_define([_m4_min],
+-[m4_eval((([$1]) < ([$2])) * ([$1]) + (([$1]) >= ([$2])) * ([$2]))])
+-
+-# _m4_minmax(METHOD, ARG1, ARG2...)
+-# ---------------------------------
+-# Common recursion code for m4_max and m4_min.  METHOD must be _m4_max
+-# or _m4_min, and there must be at least two arguments to combine.
+-#
+-# Please keep foreach.m4 in sync with any adjustments made here.
+-m4_define([_m4_minmax],
+-[m4_if([$#], [3], [$1([$2], [$3])],
+-       [$0([$1], $1([$2], [$3]), m4_shift3($@))])])
+-
+-
+-# m4_sign(A)
+-# ----------
+-# The sign of the integer expression A.
+-m4_define([m4_sign],
+-[m4_eval((([$1]) > 0) - (([$1]) < 0))])
+-
+-
+-
+-## ------------------------ ##
+-## 14. Version processing.  ##
+-## ------------------------ ##
+-
+-
+-# m4_version_unletter(VERSION)
+-# ----------------------------
+-# Normalize beta version numbers with letters to numeric expressions, which
+-# can then be handed to m4_eval for the purpose of comparison.
+-#
+-#   Nl -> (N+1).-1.(l#)
+-#
+-# for example:
+-#   [2.14a] -> [0,2,14+1,-1,[0r36:a]] -> 2.15.-1.10
+-#   [2.14b] -> [0,2,15+1,-1,[0r36:b]] -> 2.15.-1.11
+-#   [2.61aa.b] -> [0,2.61,1,-1,[0r36:aa],+1,-1,[0r36:b]] -> 2.62.-1.370.1.-1.11
+-#   [08] -> [0,[0r10:0]8] -> 8
+-#
+-# This macro expects reasonable version numbers, but can handle double
+-# letters and does not expand any macros.  Original version strings can
+-# use both `.' and `-' separators.
+-#
+-# Inline constant expansions, to avoid m4_defn overhead.
+-# _m4_version_unletter is the real workhorse used by m4_version_compare,
+-# but since [0r36:a] and commas are less readable than 10 and dots, we
+-# provide a wrapper for human use.
+-m4_define([m4_version_unletter],
+-[m4_substr(m4_map_args([.m4_eval], m4_unquote(_$0([$1]))), [3])])
+-m4_define([_m4_version_unletter],
+-[m4_bpatsubst(m4_bpatsubst(m4_translit([[[[0,$1]]]], [.-], [,,]),]dnl
+-m4_dquote(m4_dquote(m4_defn([m4_cr_Letters])))[[+],
+-            [+1,-1,[0r36:\&]]), [,0], [,[0r10:0]])])
+-
+-
+-# m4_version_compare(VERSION-1, VERSION-2)
+-# ----------------------------------------
+-# Compare the two version numbers and expand into
+-#  -1 if VERSION-1 < VERSION-2
+-#   0 if           =
+-#   1 if           >
+-#
+-# Since _m4_version_unletter does not output side effects, we can
+-# safely bypass the overhead of m4_version_cmp.
+-m4_define([m4_version_compare],
+-[_m4_list_cmp_raw(_m4_version_unletter([$1]), _m4_version_unletter([$2]))])
+-
+-
+-# m4_PACKAGE_NAME
+-# m4_PACKAGE_TARNAME
+-# m4_PACKAGE_VERSION
+-# m4_PACKAGE_STRING
+-# m4_PACKAGE_BUGREPORT
+-# --------------------
+-# If m4sugar/version.m4 is present, then define version strings.  This
+-# file is optional, provided by Autoconf but absent in Bison.
+-m4_sinclude([m4sugar/version.m4])
+-
+-
+-# m4_version_prereq(VERSION, [IF-OK], [IF-NOT = FAIL])
+-# ----------------------------------------------------
+-# Check this Autoconf version against VERSION.
+-m4_define([m4_version_prereq],
+-m4_ifdef([m4_PACKAGE_VERSION],
+-[[m4_if(m4_version_compare(]m4_dquote(m4_defn([m4_PACKAGE_VERSION]))[, [$1]),
+-      [-1],
+-      [m4_default([$3],
+-                  [m4_fatal([Autoconf version $1 or higher is required],
+-                            [63])])],
+-      [$2])]],
+-[[m4_fatal([m4sugar/version.m4 not found])]]))
+-
+-
+-## ------------------ ##
+-## 15. Set handling.  ##
+-## ------------------ ##
+-
+-# Autoconf likes to create arbitrarily large sets; for example, as of
+-# this writing, the configure.ac for coreutils tracks a set of more
+-# than 400 AC_SUBST.  How do we track all of these set members,
+-# without introducing duplicates?  We could use m4_append_uniq, with
+-# the set NAME residing in the contents of the macro NAME.
+-# Unfortunately, m4_append_uniq is quadratic for set creation, because
+-# it costs O(n) to search the string for each of O(n) insertions; not
+-# to mention that with m4 1.4.x, even using m4_append is slow, costing
+-# O(n) rather than O(1) per insertion.  Other set operations, not used
+-# by Autoconf but still possible by manipulation of the definition
+-# tracked in macro NAME, include O(n) deletion of one element and O(n)
+-# computation of set size.  Because the set is exposed to the user via
+-# the definition of a single macro, we cannot cache any data about the
+-# set without risking the cache being invalidated by the user
+-# redefining NAME.
+-#
+-# Can we do better?  Yes, because m4 gives us an O(1) search function
+-# for free: ifdef.  Additionally, even m4 1.4.x gives us an O(1)
+-# insert operation for free: pushdef.  But to use these, we must
+-# represent the set via a group of macros; to keep the set consistent,
+-# we must hide the set so that the user can only manipulate it through
+-# accessor macros.  The contents of the set are maintained through two
+-# access points; _m4_set([name]) is a pushdef stack of values in the
+-# set, useful for O(n) traversal of the set contents; while the
+-# existence of _m4_set([name],value) with no particular value is
+-# useful for O(1) querying of set membership.  And since the user
+-# cannot externally manipulate the set, we are free to add additional
+-# caching macros for other performance improvements.  Deletion can be
+-# O(1) per element rather than O(n), by reworking the definition of
+-# _m4_set([name],value) to be 0 or 1 based on current membership, and
+-# adding _m4_set_cleanup(name) to defer the O(n) cleanup of
+-# _m4_set([name]) until we have another reason to do an O(n)
+-# traversal.  The existence of _m4_set_cleanup(name) can then be used
+-# elsewhere to determine if we must dereference _m4_set([name],value),
+-# or assume that definition implies set membership.  Finally, size can
+-# be tracked in an O(1) fashion with _m4_set_size(name).
+-#
+-# The quoting in _m4_set([name],value) is chosen so that there is no
+-# ambiguity with a set whose name contains a comma, and so that we can
+-# supply the value via _m4_defn([_m4_set([name])]) without needing any
+-# quote manipulation.
+-
+-# m4_set_add(SET, VALUE, [IF-UNIQ], [IF-DUP])
+-# -------------------------------------------
+-# Add VALUE as an element of SET.  Expand IF-UNIQ on the first
+-# addition, and IF-DUP if it is already in the set.  Addition of one
+-# element is O(1), such that overall set creation is O(n).
+-#
+-# We do not want to add a duplicate for a previously deleted but
+-# unpruned element, but it is just as easy to check existence directly
+-# as it is to query _m4_set_cleanup($1).
+-m4_define([m4_set_add],
+-[m4_ifdef([_m4_set([$1],$2)],
+-        [m4_if(m4_indir([_m4_set([$1],$2)]), [0],
+-               [m4_define([_m4_set([$1],$2)],
+-                          [1])_m4_set_size([$1], [m4_incr])$3], [$4])],
+-        [m4_define([_m4_set([$1],$2)],
+-                   [1])m4_pushdef([_m4_set([$1])],
+-                                  [$2])_m4_set_size([$1], [m4_incr])$3])])
+-
+-# m4_set_add_all(SET, VALUE...)
+-# -----------------------------
+-# Add each VALUE into SET.  This is O(n) in the number of VALUEs, and
+-# can be faster than calling m4_set_add for each VALUE.
+-#
+-# Implement two recursion helpers; the check variant is slower but
+-# handles the case where an element has previously been removed but
+-# not pruned.  The recursion helpers ignore their second argument, so
+-# that we can use the faster m4_shift2 and 2 arguments, rather than
+-# _m4_shift2 and one argument, as the signal to end recursion.
+-#
+-# Please keep foreach.m4 in sync with any adjustments made here.
+-m4_define([m4_set_add_all],
+-[m4_define([_m4_set_size($1)], m4_eval(m4_set_size([$1])
+-  + m4_len(m4_ifdef([_m4_set_cleanup($1)], [_$0_check], [_$0])([$1], $@))))])
+-
+-m4_define([_m4_set_add_all],
+-[m4_if([$#], [2], [],
+-       [m4_ifdef([_m4_set([$1],$3)], [],
+-               [m4_define([_m4_set([$1],$3)], [1])m4_pushdef([_m4_set([$1])],
+-         [$3])-])$0([$1], m4_shift2($@))])])
+-
+-m4_define([_m4_set_add_all_check],
+-[m4_if([$#], [2], [],
+-       [m4_set_add([$1], [$3])$0([$1], m4_shift2($@))])])
+-
+-# m4_set_contains(SET, VALUE, [IF-PRESENT], [IF-ABSENT])
+-# ------------------------------------------------------
+-# Expand IF-PRESENT if SET contains VALUE, otherwise expand IF-ABSENT.
+-# This is always O(1).
+-m4_define([m4_set_contains],
+-[m4_ifdef([_m4_set_cleanup($1)],
+-        [m4_if(m4_ifdef([_m4_set([$1],$2)],
+-                  [m4_indir([_m4_set([$1],$2)])], [0]), [1], [$3], [$4])],
+-        [m4_ifdef([_m4_set([$1],$2)], [$3], [$4])])])
+-
+-# m4_set_contents(SET, [SEP])
+-# ---------------------------
+-# Expand to a single string containing all the elements in SET,
+-# separated by SEP, without modifying SET.  No provision is made for
+-# disambiguating set elements that contain non-empty SEP as a
+-# sub-string, or for recognizing a set that contains only the empty
+-# string.  Order of the output is not guaranteed.  If any elements
+-# have been previously removed from the set, this action will prune
+-# the unused memory.  This is O(n) in the size of the set before
+-# pruning.
+-#
+-# Use _m4_popdef for speed.  The existence of _m4_set_cleanup($1)
+-# determines which version of _1 helper we use.
+-m4_define([m4_set_contents],
+-[m4_set_map_sep([$1], [], [], [[$2]])])
+-
+-# _m4_set_contents_1(SET)
+-# _m4_set_contents_1c(SET)
+-# _m4_set_contents_2(SET, [PRE], [POST], [SEP])
+-# ---------------------------------------------
+-# Expand to a list of quoted elements currently in the set, each
+-# surrounded by PRE and POST, and moving SEP in front of PRE on
+-# recursion.  To avoid nesting limit restrictions, the algorithm must
+-# be broken into two parts; _1 destructively copies the stack in
+-# reverse into _m4_set_($1), producing no output; then _2
+-# destructively copies _m4_set_($1) back into the stack in reverse.
+-# If no elements were deleted, then this visits the set in the order
+-# that elements were inserted.  Behavior is undefined if PRE/POST/SEP
+-# tries to recursively list or modify SET in any way other than
+-# calling m4_set_remove on the current element.  Use _1 if all entries
+-# in the stack are guaranteed to be in the set, and _1c to prune
+-# removed entries.  Uses _m4_defn and _m4_popdef for speed.
+-m4_define([_m4_set_contents_1],
+-[_m4_stack_reverse([_m4_set([$1])], [_m4_set_($1)])])
+-
+-m4_define([_m4_set_contents_1c],
+-[m4_ifdef([_m4_set([$1])],
+-        [m4_set_contains([$1], _m4_defn([_m4_set([$1])]),
+-                 [m4_pushdef([_m4_set_($1)], _m4_defn([_m4_set([$1])]))],
+-                 [_m4_popdef([_m4_set([$1],]_m4_defn(
+-      [_m4_set([$1])])[)])])_m4_popdef([_m4_set([$1])])$0([$1])],
+-        [_m4_popdef([_m4_set_cleanup($1)])])])
+-
+-m4_define([_m4_set_contents_2],
+-[_m4_stack_reverse([_m4_set_($1)], [_m4_set([$1])],
+-  [$2[]_m4_defn([_m4_set_($1)])$3], [$4[]])])
+-
+-# m4_set_delete(SET)
+-# ------------------
+-# Delete all elements in SET, and reclaim any memory occupied by the
+-# set.  This is O(n) in the set size.
+-#
+-# Use _m4_defn and _m4_popdef for speed.
+-m4_define([m4_set_delete],
+-[m4_ifdef([_m4_set([$1])],
+-        [_m4_popdef([_m4_set([$1],]_m4_defn([_m4_set([$1])])[)],
+-                    [_m4_set([$1])])$0([$1])],
+-        [m4_ifdef([_m4_set_cleanup($1)],
+-                  [_m4_popdef([_m4_set_cleanup($1)])])m4_ifdef(
+-                  [_m4_set_size($1)],
+-                  [_m4_popdef([_m4_set_size($1)])])])])
+-
+-# m4_set_difference(SET1, SET2)
+-# -----------------------------
+-# Produce a LIST of quoted elements that occur in SET1 but not SET2.
+-# Output a comma prior to any elements, to distinguish the empty
+-# string from no elements.  This can be directly used as a series of
+-# arguments, such as for m4_join, or wrapped inside quotes for use in
+-# m4_foreach.  Order of the output is not guaranteed.
+-#
+-# Short-circuit the idempotence relation.
+-m4_define([m4_set_difference],
+-[m4_if([$1], [$2], [], [m4_set_map_sep([$1], [_$0([$2],], [)])])])
+-
+-m4_define([_m4_set_difference],
+-[m4_set_contains([$1], [$2], [], [,[$2]])])
+-
+-# m4_set_dump(SET, [SEP])
+-# -----------------------
+-# Expand to a single string containing all the elements in SET,
+-# separated by SEP, then delete SET.  In general, if you only need to
+-# list the contents once, this is faster than m4_set_contents.  No
+-# provision is made for disambiguating set elements that contain
+-# non-empty SEP as a sub-string.  Order of the output is not
+-# guaranteed.  This is O(n) in the size of the set before pruning.
+-#
+-# Use _m4_popdef for speed.  Use existence of _m4_set_cleanup($1) to
+-# decide if more expensive recursion is needed.
+-m4_define([m4_set_dump],
+-[m4_ifdef([_m4_set_size($1)],
+-        [_m4_popdef([_m4_set_size($1)])])m4_ifdef([_m4_set_cleanup($1)],
+-    [_$0_check], [_$0])([$1], [], [$2])])
+-
+-# _m4_set_dump(SET, [SEP], [PREP])
+-# _m4_set_dump_check(SET, [SEP], [PREP])
+-# --------------------------------------
+-# Print SEP and the current element, then delete the element and
+-# recurse with empty SEP changed to PREP.  The check variant checks
+-# whether the element has been previously removed.  Use _m4_defn and
+-# _m4_popdef for speed.
+-m4_define([_m4_set_dump],
+-[m4_ifdef([_m4_set([$1])],
+-        [[$2]_m4_defn([_m4_set([$1])])_m4_popdef([_m4_set([$1],]_m4_defn(
+-              [_m4_set([$1])])[)], [_m4_set([$1])])$0([$1], [$2$3])])])
+-
+-m4_define([_m4_set_dump_check],
+-[m4_ifdef([_m4_set([$1])],
+-        [m4_set_contains([$1], _m4_defn([_m4_set([$1])]),
+-                         [[$2]_m4_defn([_m4_set([$1])])])_m4_popdef(
+-    [_m4_set([$1],]_m4_defn([_m4_set([$1])])[)],
+-    [_m4_set([$1])])$0([$1], [$2$3])],
+-        [_m4_popdef([_m4_set_cleanup($1)])])])
+-
+-# m4_set_empty(SET, [IF-EMPTY], [IF-ELEMENTS])
+-# --------------------------------------------
+-# Expand IF-EMPTY if SET has no elements, otherwise IF-ELEMENTS.
+-m4_define([m4_set_empty],
+-[m4_ifdef([_m4_set_size($1)],
+-        [m4_if(m4_indir([_m4_set_size($1)]), [0], [$2], [$3])], [$2])])
+-
+-# m4_set_foreach(SET, VAR, ACTION)
+-# --------------------------------
+-# For each element of SET, define VAR to the element and expand
+-# ACTION.  ACTION should not recursively list SET's contents, add
+-# elements to SET, nor delete any element from SET except the one
+-# currently in VAR.  The order that the elements are visited in is not
+-# guaranteed.  This is faster than the corresponding m4_foreach([VAR],
+-#   m4_indir([m4_dquote]m4_set_listc([SET])), [ACTION])
+-m4_define([m4_set_foreach],
+-[m4_pushdef([$2])m4_set_map_sep([$1],
+-[m4_define([$2],], [)$3])m4_popdef([$2])])
+-
+-# m4_set_intersection(SET1, SET2)
+-# -------------------------------
+-# Produce a LIST of quoted elements that occur in both SET1 or SET2.
+-# Output a comma prior to any elements, to distinguish the empty
+-# string from no elements.  This can be directly used as a series of
+-# arguments, such as for m4_join, or wrapped inside quotes for use in
+-# m4_foreach.  Order of the output is not guaranteed.
+-#
+-# Iterate over the smaller set, and short-circuit the idempotence
+-# relation.
+-m4_define([m4_set_intersection],
+-[m4_if([$1], [$2], [m4_set_listc([$1])],
+-       m4_eval(m4_set_size([$2]) < m4_set_size([$1])), [1], [$0([$2], [$1])],
+-       [m4_set_map_sep([$1], [_$0([$2],], [)])])])
+-
+-m4_define([_m4_set_intersection],
+-[m4_set_contains([$1], [$2], [,[$2]])])
+-
+-# m4_set_list(SET)
+-# m4_set_listc(SET)
+-# -----------------
+-# Produce a LIST of quoted elements of SET.  This can be directly used
+-# as a series of arguments, such as for m4_join or m4_set_add_all, or
+-# wrapped inside quotes for use in m4_foreach or m4_map.  With
+-# m4_set_list, there is no way to distinguish an empty set from a set
+-# containing only the empty string; with m4_set_listc, a leading comma
+-# is output if there are any elements.
+-m4_define([m4_set_list],
+-[m4_set_map_sep([$1], [], [], [,])])
+-
+-m4_define([m4_set_listc],
+-[m4_set_map_sep([$1], [,])])
+-
+-# m4_set_map(SET, ACTION)
+-# -----------------------
+-# For each element of SET, expand ACTION with a single argument of the
+-# current element.  ACTION should not recursively list SET's contents,
+-# add elements to SET, nor delete any element from SET except the one
+-# passed as an argument.  The order that the elements are visited in
+-# is not guaranteed.  This is faster than either of the corresponding
+-#   m4_map_args([ACTION]m4_set_listc([SET]))
+-#   m4_set_foreach([SET], [VAR], [ACTION(m4_defn([VAR]))])
+-m4_define([m4_set_map],
+-[m4_set_map_sep([$1], [$2(], [)])])
+-
+-# m4_set_map_sep(SET, [PRE], [POST], [SEP])
+-# -----------------------------------------
+-# For each element of SET, expand PRE[value]POST[], and expand SEP
+-# between elements.
+-m4_define([m4_set_map_sep],
+-[m4_ifdef([_m4_set_cleanup($1)], [_m4_set_contents_1c],
+-        [_m4_set_contents_1])([$1])_m4_set_contents_2($@)])
+-
+-# m4_set_remove(SET, VALUE, [IF-PRESENT], [IF-ABSENT])
+-# ----------------------------------------------------
+-# If VALUE is an element of SET, delete it and expand IF-PRESENT.
+-# Otherwise expand IF-ABSENT.  Deleting a single value is O(1),
+-# although it leaves memory occupied until the next O(n) traversal of
+-# the set which will compact the set.
+-#
+-# Optimize if the element being removed is the most recently added,
+-# since defining _m4_set_cleanup($1) slows down so many other macros.
+-# In particular, this plays well with m4_set_foreach and m4_set_map.
+-m4_define([m4_set_remove],
+-[m4_set_contains([$1], [$2], [_m4_set_size([$1],
+-    [m4_decr])m4_if(_m4_defn([_m4_set([$1])]), [$2],
+-                  [_m4_popdef([_m4_set([$1],$2)], [_m4_set([$1])])],
+-                  [m4_define([_m4_set_cleanup($1)])m4_define(
+-                    [_m4_set([$1],$2)], [0])])$3], [$4])])
+-
+-# m4_set_size(SET)
+-# ----------------
+-# Expand to the number of elements currently in SET.  This operation
+-# is O(1), and thus more efficient than m4_count(m4_set_list([SET])).
+-m4_define([m4_set_size],
+-[m4_ifdef([_m4_set_size($1)], [m4_indir([_m4_set_size($1)])], [0])])
+-
+-# _m4_set_size(SET, ACTION)
+-# -------------------------
+-# ACTION must be either m4_incr or m4_decr, and the size of SET is
+-# changed accordingly.  If the set is empty, ACTION must not be
+-# m4_decr.
+-m4_define([_m4_set_size],
+-[m4_define([_m4_set_size($1)],
+-         m4_ifdef([_m4_set_size($1)], [$2(m4_indir([_m4_set_size($1)]))],
+-                  [1]))])
+-
+-# m4_set_union(SET1, SET2)
+-# ------------------------
+-# Produce a LIST of double quoted elements that occur in either SET1
+-# or SET2, without duplicates.  Output a comma prior to any elements,
+-# to distinguish the empty string from no elements.  This can be
+-# directly used as a series of arguments, such as for m4_join, or
+-# wrapped inside quotes for use in m4_foreach.  Order of the output is
+-# not guaranteed.
+-#
+-# We can rely on the fact that m4_set_listc prunes SET1, so we don't
+-# need to check _m4_set([$1],element) for 0.  Short-circuit the
+-# idempotence relation.
+-m4_define([m4_set_union],
+-[m4_set_listc([$1])m4_if([$1], [$2], [],
+-  [m4_set_map_sep([$2], [_$0([$1],], [)])])])
+-
+-m4_define([_m4_set_union],
+-[m4_ifdef([_m4_set([$1],$2)], [], [,[$2]])])
+-
+-
+-## ------------------- ##
+-## 16. File handling.  ##
+-## ------------------- ##
+-
+-
+-# It is a real pity that M4 comes with no macros to bind a diversion
+-# to a file.  So we have to deal without, which makes us a lot more
+-# fragile than we should.
+-
+-
+-# m4_file_append(FILE-NAME, CONTENT)
+-# ----------------------------------
+-m4_define([m4_file_append],
+-[m4_syscmd([cat >>$1 <<_m4eof
+-$2
+-_m4eof
+-])
+-m4_if(m4_sysval, [0], [],
+-      [m4_fatal([$0: cannot write: $1])])])
+-
+-
+-
+-## ------------------------ ##
+-## 17. Setting M4sugar up.  ##
+-## ------------------------ ##
+-
+-# _m4_divert_diversion should be defined.
+-m4_divert_push([KILL])
+-
+-# m4_init
+-# -------
+-# Initialize the m4sugar language.
+-m4_define([m4_init],
+-[# All the M4sugar macros start with `m4_', except `dnl' kept as is
+-# for sake of simplicity.
+-m4_pattern_forbid([^_?m4_])
+-m4_pattern_forbid([^dnl$])
+-
+-# If __m4_version__ is defined, we assume that we are being run by M4
+-# 1.6 or newer, thus $@ recursion is linear, and debugmode(+do)
+-# is available for faster checks of dereferencing undefined macros
+-# and forcing dumpdef to print to stderr regardless of debugfile.
+-# But if it is missing, we assume we are being run by M4 1.4.x, that
+-# $@ recursion is quadratic, and that we need foreach-based
+-# replacement macros.  Also, m4 prior to 1.4.8 loses track of location
+-# during m4wrap text; __line__ should never be 0.
+-#
+-# Use the raw builtin to avoid tripping up include tracing.
+-# Meanwhile, avoid m4_copy, since it temporarily undefines m4_defn.
+-m4_ifdef([__m4_version__],
+-[m4_debugmode([+do])
+-m4_define([m4_defn], _m4_defn([_m4_defn]))
+-m4_define([m4_dumpdef], _m4_defn([_m4_dumpdef]))
+-m4_define([m4_popdef], _m4_defn([_m4_popdef]))
+-m4_define([m4_undefine], _m4_defn([_m4_undefine]))],
+-[m4_builtin([include], [m4sugar/foreach.m4])
+-m4_wrap_lifo([m4_if(__line__, [0], [m4_pushdef([m4_location],
+-]]m4_dquote(m4_dquote(m4_dquote(__file__:__line__)))[[)])])])
+-
+-# Rewrite the first entry of the diversion stack.
+-m4_divert([KILL])
+-
+-# Check the divert push/pop perfect balance.
+-# Some users are prone to also use m4_wrap to register last-minute
+-# m4_divert_text; so after our diversion cleanups, we restore
+-# KILL as the bottom of the diversion stack.
+-m4_wrap([m4_popdef([_m4_divert_diversion])m4_ifdef(
+-  [_m4_divert_diversion], [m4_fatal([$0: unbalanced m4_divert_push:
+-]m4_divert_stack)])_m4_popdef([_m4_divert_stack])m4_divert_push([KILL])])
+-])
+diff --git a/Source/ThirdParty/ANGLE/tools/flex-bison/third_party/skeletons/LICENSE b/Source/ThirdParty/ANGLE/tools/flex-bison/third_party/skeletons/LICENSE
+deleted file mode 100644
+index 94a9ed024d3..00000000000
+--- a/Source/ThirdParty/ANGLE/tools/flex-bison/third_party/skeletons/LICENSE
++++ /dev/null
+@@ -1,674 +0,0 @@
+-                    GNU GENERAL PUBLIC LICENSE
+-                       Version 3, 29 June 2007
+-
+- Copyright (C) 2007 Free Software Foundation, Inc. <http://fsf.org/>
+- Everyone is permitted to copy and distribute verbatim copies
+- of this license document, but changing it is not allowed.
+-
+-                            Preamble
+-
+-  The GNU General Public License is a free, copyleft license for
+-software and other kinds of works.
+-
+-  The licenses for most software and other practical works are designed
+-to take away your freedom to share and change the works.  By contrast,
+-the GNU General Public License is intended to guarantee your freedom to
+-share and change all versions of a program--to make sure it remains free
+-software for all its users.  We, the Free Software Foundation, use the
+-GNU General Public License for most of our software; it applies also to
+-any other work released this way by its authors.  You can apply it to
+-your programs, too.
+-
+-  When we speak of free software, we are referring to freedom, not
+-price.  Our General Public Licenses are designed to make sure that you
+-have the freedom to distribute copies of free software (and charge for
+-them if you wish), that you receive source code or can get it if you
+-want it, that you can change the software or use pieces of it in new
+-free programs, and that you know you can do these things.
+-
+-  To protect your rights, we need to prevent others from denying you
+-these rights or asking you to surrender the rights.  Therefore, you have
+-certain responsibilities if you distribute copies of the software, or if
+-you modify it: responsibilities to respect the freedom of others.
+-
+-  For example, if you distribute copies of such a program, whether
+-gratis or for a fee, you must pass on to the recipients the same
+-freedoms that you received.  You must make sure that they, too, receive
+-or can get the source code.  And you must show them these terms so they
+-know their rights.
+-
+-  Developers that use the GNU GPL protect your rights with two steps:
+-(1) assert copyright on the software, and (2) offer you this License
+-giving you legal permission to copy, distribute and/or modify it.
+-
+-  For the developers' and authors' protection, the GPL clearly explains
+-that there is no warranty for this free software.  For both users' and
+-authors' sake, the GPL requires that modified versions be marked as
+-changed, so that their problems will not be attributed erroneously to
+-authors of previous versions.
+-
+-  Some devices are designed to deny users access to install or run
+-modified versions of the software inside them, although the manufacturer
+-can do so.  This is fundamentally incompatible with the aim of
+-protecting users' freedom to change the software.  The systematic
+-pattern of such abuse occurs in the area of products for individuals to
+-use, which is precisely where it is most unacceptable.  Therefore, we
+-have designed this version of the GPL to prohibit the practice for those
+-products.  If such problems arise substantially in other domains, we
+-stand ready to extend this provision to those domains in future versions
+-of the GPL, as needed to protect the freedom of users.
+-
+-  Finally, every program is threatened constantly by software patents.
+-States should not allow patents to restrict development and use of
+-software on general-purpose computers, but in those that do, we wish to
+-avoid the special danger that patents applied to a free program could
+-make it effectively proprietary.  To prevent this, the GPL assures that
+-patents cannot be used to render the program non-free.
+-
+-  The precise terms and conditions for copying, distribution and
+-modification follow.
+-
+-                       TERMS AND CONDITIONS
+-
+-  0. Definitions.
+-
+-  "This License" refers to version 3 of the GNU General Public License.
+-
+-  "Copyright" also means copyright-like laws that apply to other kinds of
+-works, such as semiconductor masks.
+-
+-  "The Program" refers to any copyrightable work licensed under this
+-License.  Each licensee is addressed as "you".  "Licensees" and
+-"recipients" may be individuals or organizations.
+-
+-  To "modify" a work means to copy from or adapt all or part of the work
+-in a fashion requiring copyright permission, other than the making of an
+-exact copy.  The resulting work is called a "modified version" of the
+-earlier work or a work "based on" the earlier work.
+-
+-  A "covered work" means either the unmodified Program or a work based
+-on the Program.
+-
+-  To "propagate" a work means to do anything with it that, without
+-permission, would make you directly or secondarily liable for
+-infringement under applicable copyright law, except executing it on a
+-computer or modifying a private copy.  Propagation includes copying,
+-distribution (with or without modification), making available to the
+-public, and in some countries other activities as well.
+-
+-  To "convey" a work means any kind of propagation that enables other
+-parties to make or receive copies.  Mere interaction with a user through
+-a computer network, with no transfer of a copy, is not conveying.
+-
+-  An interactive user interface displays "Appropriate Legal Notices"
+-to the extent that it includes a convenient and prominently visible
+-feature that (1) displays an appropriate copyright notice, and (2)
+-tells the user that there is no warranty for the work (except to the
+-extent that warranties are provided), that licensees may convey the
+-work under this License, and how to view a copy of this License.  If
+-the interface presents a list of user commands or options, such as a
+-menu, a prominent item in the list meets this criterion.
+-
+-  1. Source Code.
+-
+-  The "source code" for a work means the preferred form of the work
+-for making modifications to it.  "Object code" means any non-source
+-form of a work.
+-
+-  A "Standard Interface" means an interface that either is an official
+-standard defined by a recognized standards body, or, in the case of
+-interfaces specified for a particular programming language, one that
+-is widely used among developers working in that language.
+-
+-  The "System Libraries" of an executable work include anything, other
+-than the work as a whole, that (a) is included in the normal form of
+-packaging a Major Component, but which is not part of that Major
+-Component, and (b) serves only to enable use of the work with that
+-Major Component, or to implement a Standard Interface for which an
+-implementation is available to the public in source code form.  A
+-"Major Component", in this context, means a major essential component
+-(kernel, window system, and so on) of the specific operating system
+-(if any) on which the executable work runs, or a compiler used to
+-produce the work, or an object code interpreter used to run it.
+-
+-  The "Corresponding Source" for a work in object code form means all
+-the source code needed to generate, install, and (for an executable
+-work) run the object code and to modify the work, including scripts to
+-control those activities.  However, it does not include the work's
+-System Libraries, or general-purpose tools or generally available free
+-programs which are used unmodified in performing those activities but
+-which are not part of the work.  For example, Corresponding Source
+-includes interface definition files associated with source files for
+-the work, and the source code for shared libraries and dynamically
+-linked subprograms that the work is specifically designed to require,
+-such as by intimate data communication or control flow between those
+-subprograms and other parts of the work.
+-
+-  The Corresponding Source need not include anything that users
+-can regenerate automatically from other parts of the Corresponding
+-Source.
+-
+-  The Corresponding Source for a work in source code form is that
+-same work.
+-
+-  2. Basic Permissions.
+-
+-  All rights granted under this License are granted for the term of
+-copyright on the Program, and are irrevocable provided the stated
+-conditions are met.  This License explicitly affirms your unlimited
+-permission to run the unmodified Program.  The output from running a
+-covered work is covered by this License only if the output, given its
+-content, constitutes a covered work.  This License acknowledges your
+-rights of fair use or other equivalent, as provided by copyright law.
+-
+-  You may make, run and propagate covered works that you do not
+-convey, without conditions so long as your license otherwise remains
+-in force.  You may convey covered works to others for the sole purpose
+-of having them make modifications exclusively for you, or provide you
+-with facilities for running those works, provided that you comply with
+-the terms of this License in conveying all material for which you do
+-not control copyright.  Those thus making or running the covered works
+-for you must do so exclusively on your behalf, under your direction
+-and control, on terms that prohibit them from making any copies of
+-your copyrighted material outside their relationship with you.
+-
+-  Conveying under any other circumstances is permitted solely under
+-the conditions stated below.  Sublicensing is not allowed; section 10
+-makes it unnecessary.
+-
+-  3. Protecting Users' Legal Rights From Anti-Circumvention Law.
+-
+-  No covered work shall be deemed part of an effective technological
+-measure under any applicable law fulfilling obligations under article
+-11 of the WIPO copyright treaty adopted on 20 December 1996, or
+-similar laws prohibiting or restricting circumvention of such
+-measures.
+-
+-  When you convey a covered work, you waive any legal power to forbid
+-circumvention of technological measures to the extent such circumvention
+-is effected by exercising rights under this License with respect to
+-the covered work, and you disclaim any intention to limit operation or
+-modification of the work as a means of enforcing, against the work's
+-users, your or third parties' legal rights to forbid circumvention of
+-technological measures.
+-
+-  4. Conveying Verbatim Copies.
+-
+-  You may convey verbatim copies of the Program's source code as you
+-receive it, in any medium, provided that you conspicuously and
+-appropriately publish on each copy an appropriate copyright notice;
+-keep intact all notices stating that this License and any
+-non-permissive terms added in accord with section 7 apply to the code;
+-keep intact all notices of the absence of any warranty; and give all
+-recipients a copy of this License along with the Program.
+-
+-  You may charge any price or no price for each copy that you convey,
+-and you may offer support or warranty protection for a fee.
+-
+-  5. Conveying Modified Source Versions.
+-
+-  You may convey a work based on the Program, or the modifications to
+-produce it from the Program, in the form of source code under the
+-terms of section 4, provided that you also meet all of these conditions:
+-
+-    a) The work must carry prominent notices stating that you modified
+-    it, and giving a relevant date.
+-
+-    b) The work must carry prominent notices stating that it is
+-    released under this License and any conditions added under section
+-    7.  This requirement modifies the requirement in section 4 to
+-    "keep intact all notices".
+-
+-    c) You must license the entire work, as a whole, under this
+-    License to anyone who comes into possession of a copy.  This
+-    License will therefore apply, along with any applicable section 7
+-    additional terms, to the whole of the work, and all its parts,
+-    regardless of how they are packaged.  This License gives no
+-    permission to license the work in any other way, but it does not
+-    invalidate such permission if you have separately received it.
+-
+-    d) If the work has interactive user interfaces, each must display
+-    Appropriate Legal Notices; however, if the Program has interactive
+-    interfaces that do not display Appropriate Legal Notices, your
+-    work need not make them do so.
+-
+-  A compilation of a covered work with other separate and independent
+-works, which are not by their nature extensions of the covered work,
+-and which are not combined with it such as to form a larger program,
+-in or on a volume of a storage or distribution medium, is called an
+-"aggregate" if the compilation and its resulting copyright are not
+-used to limit the access or legal rights of the compilation's users
+-beyond what the individual works permit.  Inclusion of a covered work
+-in an aggregate does not cause this License to apply to the other
+-parts of the aggregate.
+-
+-  6. Conveying Non-Source Forms.
+-
+-  You may convey a covered work in object code form under the terms
+-of sections 4 and 5, provided that you also convey the
+-machine-readable Corresponding Source under the terms of this License,
+-in one of these ways:
+-
+-    a) Convey the object code in, or embodied in, a physical product
+-    (including a physical distribution medium), accompanied by the
+-    Corresponding Source fixed on a durable physical medium
+-    customarily used for software interchange.
+-
+-    b) Convey the object code in, or embodied in, a physical product
+-    (including a physical distribution medium), accompanied by a
+-    written offer, valid for at least three years and valid for as
+-    long as you offer spare parts or customer support for that product
+-    model, to give anyone who possesses the object code either (1) a
+-    copy of the Corresponding Source for all the software in the
+-    product that is covered by this License, on a durable physical
+-    medium customarily used for software interchange, for a price no
+-    more than your reasonable cost of physically performing this
+-    conveying of source, or (2) access to copy the
+-    Corresponding Source from a network server at no charge.
+-
+-    c) Convey individual copies of the object code with a copy of the
+-    written offer to provide the Corresponding Source.  This
+-    alternative is allowed only occasionally and noncommercially, and
+-    only if you received the object code with such an offer, in accord
+-    with subsection 6b.
+-
+-    d) Convey the object code by offering access from a designated
+-    place (gratis or for a charge), and offer equivalent access to the
+-    Corresponding Source in the same way through the same place at no
+-    further charge.  You need not require recipients to copy the
+-    Corresponding Source along with the object code.  If the place to
+-    copy the object code is a network server, the Corresponding Source
+-    may be on a different server (operated by you or a third party)
+-    that supports equivalent copying facilities, provided you maintain
+-    clear directions next to the object code saying where to find the
+-    Corresponding Source.  Regardless of what server hosts the
+-    Corresponding Source, you remain obligated to ensure that it is
+-    available for as long as needed to satisfy these requirements.
+-
+-    e) Convey the object code using peer-to-peer transmission, provided
+-    you inform other peers where the object code and Corresponding
+-    Source of the work are being offered to the general public at no
+-    charge under subsection 6d.
+-
+-  A separable portion of the object code, whose source code is excluded
+-from the Corresponding Source as a System Library, need not be
+-included in conveying the object code work.
+-
+-  A "User Product" is either (1) a "consumer product", which means any
+-tangible personal property which is normally used for personal, family,
+-or household purposes, or (2) anything designed or sold for incorporation
+-into a dwelling.  In determining whether a product is a consumer product,
+-doubtful cases shall be resolved in favor of coverage.  For a particular
+-product received by a particular user, "normally used" refers to a
+-typical or common use of that class of product, regardless of the status
+-of the particular user or of the way in which the particular user
+-actually uses, or expects or is expected to use, the product.  A product
+-is a consumer product regardless of whether the product has substantial
+-commercial, industrial or non-consumer uses, unless such uses represent
+-the only significant mode of use of the product.
+-
+-  "Installation Information" for a User Product means any methods,
+-procedures, authorization keys, or other information required to install
+-and execute modified versions of a covered work in that User Product from
+-a modified version of its Corresponding Source.  The information must
+-suffice to ensure that the continued functioning of the modified object
+-code is in no case prevented or interfered with solely because
+-modification has been made.
+-
+-  If you convey an object code work under this section in, or with, or
+-specifically for use in, a User Product, and the conveying occurs as
+-part of a transaction in which the right of possession and use of the
+-User Product is transferred to the recipient in perpetuity or for a
+-fixed term (regardless of how the transaction is characterized), the
+-Corresponding Source conveyed under this section must be accompanied
+-by the Installation Information.  But this requirement does not apply
+-if neither you nor any third party retains the ability to install
+-modified object code on the User Product (for example, the work has
+-been installed in ROM).
+-
+-  The requirement to provide Installation Information does not include a
+-requirement to continue to provide support service, warranty, or updates
+-for a work that has been modified or installed by the recipient, or for
+-the User Product in which it has been modified or installed.  Access to a
+-network may be denied when the modification itself materially and
+-adversely affects the operation of the network or violates the rules and
+-protocols for communication across the network.
+-
+-  Corresponding Source conveyed, and Installation Information provided,
+-in accord with this section must be in a format that is publicly
+-documented (and with an implementation available to the public in
+-source code form), and must require no special password or key for
+-unpacking, reading or copying.
+-
+-  7. Additional Terms.
+-
+-  "Additional permissions" are terms that supplement the terms of this
+-License by making exceptions from one or more of its conditions.
+-Additional permissions that are applicable to the entire Program shall
+-be treated as though they were included in this License, to the extent
+-that they are valid under applicable law.  If additional permissions
+-apply only to part of the Program, that part may be used separately
+-under those permissions, but the entire Program remains governed by
+-this License without regard to the additional permissions.
+-
+-  When you convey a copy of a covered work, you may at your option
+-remove any additional permissions from that copy, or from any part of
+-it.  (Additional permissions may be written to require their own
+-removal in certain cases when you modify the work.)  You may place
+-additional permissions on material, added by you to a covered work,
+-for which you have or can give appropriate copyright permission.
+-
+-  Notwithstanding any other provision of this License, for material you
+-add to a covered work, you may (if authorized by the copyright holders of
+-that material) supplement the terms of this License with terms:
+-
+-    a) Disclaiming warranty or limiting liability differently from the
+-    terms of sections 15 and 16 of this License; or
+-
+-    b) Requiring preservation of specified reasonable legal notices or
+-    author attributions in that material or in the Appropriate Legal
+-    Notices displayed by works containing it; or
+-
+-    c) Prohibiting misrepresentation of the origin of that material, or
+-    requiring that modified versions of such material be marked in
+-    reasonable ways as different from the original version; or
+-
+-    d) Limiting the use for publicity purposes of names of licensors or
+-    authors of the material; or
+-
+-    e) Declining to grant rights under trademark law for use of some
+-    trade names, trademarks, or service marks; or
+-
+-    f) Requiring indemnification of licensors and authors of that
+-    material by anyone who conveys the material (or modified versions of
+-    it) with contractual assumptions of liability to the recipient, for
+-    any liability that these contractual assumptions directly impose on
+-    those licensors and authors.
+-
+-  All other non-permissive additional terms are considered "further
+-restrictions" within the meaning of section 10.  If the Program as you
+-received it, or any part of it, contains a notice stating that it is
+-governed by this License along with a term that is a further
+-restriction, you may remove that term.  If a license document contains
+-a further restriction but permits relicensing or conveying under this
+-License, you may add to a covered work material governed by the terms
+-of that license document, provided that the further restriction does
+-not survive such relicensing or conveying.
+-
+-  If you add terms to a covered work in accord with this section, you
+-must place, in the relevant source files, a statement of the
+-additional terms that apply to those files, or a notice indicating
+-where to find the applicable terms.
+-
+-  Additional terms, permissive or non-permissive, may be stated in the
+-form of a separately written license, or stated as exceptions;
+-the above requirements apply either way.
+-
+-  8. Termination.
+-
+-  You may not propagate or modify a covered work except as expressly
+-provided under this License.  Any attempt otherwise to propagate or
+-modify it is void, and will automatically terminate your rights under
+-this License (including any patent licenses granted under the third
+-paragraph of section 11).
+-
+-  However, if you cease all violation of this License, then your
+-license from a particular copyright holder is reinstated (a)
+-provisionally, unless and until the copyright holder explicitly and
+-finally terminates your license, and (b) permanently, if the copyright
+-holder fails to notify you of the violation by some reasonable means
+-prior to 60 days after the cessation.
+-
+-  Moreover, your license from a particular copyright holder is
+-reinstated permanently if the copyright holder notifies you of the
+-violation by some reasonable means, this is the first time you have
+-received notice of violation of this License (for any work) from that
+-copyright holder, and you cure the violation prior to 30 days after
+-your receipt of the notice.
+-
+-  Termination of your rights under this section does not terminate the
+-licenses of parties who have received copies or rights from you under
+-this License.  If your rights have been terminated and not permanently
+-reinstated, you do not qualify to receive new licenses for the same
+-material under section 10.
+-
+-  9. Acceptance Not Required for Having Copies.
+-
+-  You are not required to accept this License in order to receive or
+-run a copy of the Program.  Ancillary propagation of a covered work
+-occurring solely as a consequence of using peer-to-peer transmission
+-to receive a copy likewise does not require acceptance.  However,
+-nothing other than this License grants you permission to propagate or
+-modify any covered work.  These actions infringe copyright if you do
+-not accept this License.  Therefore, by modifying or propagating a
+-covered work, you indicate your acceptance of this License to do so.
+-
+-  10. Automatic Licensing of Downstream Recipients.
+-
+-  Each time you convey a covered work, the recipient automatically
+-receives a license from the original licensors, to run, modify and
+-propagate that work, subject to this License.  You are not responsible
+-for enforcing compliance by third parties with this License.
+-
+-  An "entity transaction" is a transaction transferring control of an
+-organization, or substantially all assets of one, or subdividing an
+-organization, or merging organizations.  If propagation of a covered
+-work results from an entity transaction, each party to that
+-transaction who receives a copy of the work also receives whatever
+-licenses to the work the party's predecessor in interest had or could
+-give under the previous paragraph, plus a right to possession of the
+-Corresponding Source of the work from the predecessor in interest, if
+-the predecessor has it or can get it with reasonable efforts.
+-
+-  You may not impose any further restrictions on the exercise of the
+-rights granted or affirmed under this License.  For example, you may
+-not impose a license fee, royalty, or other charge for exercise of
+-rights granted under this License, and you may not initiate litigation
+-(including a cross-claim or counterclaim in a lawsuit) alleging that
+-any patent claim is infringed by making, using, selling, offering for
+-sale, or importing the Program or any portion of it.
+-
+-  11. Patents.
+-
+-  A "contributor" is a copyright holder who authorizes use under this
+-License of the Program or a work on which the Program is based.  The
+-work thus licensed is called the contributor's "contributor version".
+-
+-  A contributor's "essential patent claims" are all patent claims
+-owned or controlled by the contributor, whether already acquired or
+-hereafter acquired, that would be infringed by some manner, permitted
+-by this License, of making, using, or selling its contributor version,
+-but do not include claims that would be infringed only as a
+-consequence of further modification of the contributor version.  For
+-purposes of this definition, "control" includes the right to grant
+-patent sublicenses in a manner consistent with the requirements of
+-this License.
+-
+-  Each contributor grants you a non-exclusive, worldwide, royalty-free
+-patent license under the contributor's essential patent claims, to
+-make, use, sell, offer for sale, import and otherwise run, modify and
+-propagate the contents of its contributor version.
+-
+-  In the following three paragraphs, a "patent license" is any express
+-agreement or commitment, however denominated, not to enforce a patent
+-(such as an express permission to practice a patent or covenant not to
+-sue for patent infringement).  To "grant" such a patent license to a
+-party means to make such an agreement or commitment not to enforce a
+-patent against the party.
+-
+-  If you convey a covered work, knowingly relying on a patent license,
+-and the Corresponding Source of the work is not available for anyone
+-to copy, free of charge and under the terms of this License, through a
+-publicly available network server or other readily accessible means,
+-then you must either (1) cause the Corresponding Source to be so
+-available, or (2) arrange to deprive yourself of the benefit of the
+-patent license for this particular work, or (3) arrange, in a manner
+-consistent with the requirements of this License, to extend the patent
+-license to downstream recipients.  "Knowingly relying" means you have
+-actual knowledge that, but for the patent license, your conveying the
+-covered work in a country, or your recipient's use of the covered work
+-in a country, would infringe one or more identifiable patents in that
+-country that you have reason to believe are valid.
+-
+-  If, pursuant to or in connection with a single transaction or
+-arrangement, you convey, or propagate by procuring conveyance of, a
+-covered work, and grant a patent license to some of the parties
+-receiving the covered work authorizing them to use, propagate, modify
+-or convey a specific copy of the covered work, then the patent license
+-you grant is automatically extended to all recipients of the covered
+-work and works based on it.
+-
+-  A patent license is "discriminatory" if it does not include within
+-the scope of its coverage, prohibits the exercise of, or is
+-conditioned on the non-exercise of one or more of the rights that are
+-specifically granted under this License.  You may not convey a covered
+-work if you are a party to an arrangement with a third party that is
+-in the business of distributing software, under which you make payment
+-to the third party based on the extent of your activity of conveying
+-the work, and under which the third party grants, to any of the
+-parties who would receive the covered work from you, a discriminatory
+-patent license (a) in connection with copies of the covered work
+-conveyed by you (or copies made from those copies), or (b) primarily
+-for and in connection with specific products or compilations that
+-contain the covered work, unless you entered into that arrangement,
+-or that patent license was granted, prior to 28 March 2007.
+-
+-  Nothing in this License shall be construed as excluding or limiting
+-any implied license or other defenses to infringement that may
+-otherwise be available to you under applicable patent law.
+-
+-  12. No Surrender of Others' Freedom.
+-
+-  If conditions are imposed on you (whether by court order, agreement or
+-otherwise) that contradict the conditions of this License, they do not
+-excuse you from the conditions of this License.  If you cannot convey a
+-covered work so as to satisfy simultaneously your obligations under this
+-License and any other pertinent obligations, then as a consequence you may
+-not convey it at all.  For example, if you agree to terms that obligate you
+-to collect a royalty for further conveying from those to whom you convey
+-the Program, the only way you could satisfy both those terms and this
+-License would be to refrain entirely from conveying the Program.
+-
+-  13. Use with the GNU Affero General Public License.
+-
+-  Notwithstanding any other provision of this License, you have
+-permission to link or combine any covered work with a work licensed
+-under version 3 of the GNU Affero General Public License into a single
+-combined work, and to convey the resulting work.  The terms of this
+-License will continue to apply to the part which is the covered work,
+-but the special requirements of the GNU Affero General Public License,
+-section 13, concerning interaction through a network will apply to the
+-combination as such.
+-
+-  14. Revised Versions of this License.
+-
+-  The Free Software Foundation may publish revised and/or new versions of
+-the GNU General Public License from time to time.  Such new versions will
+-be similar in spirit to the present version, but may differ in detail to
+-address new problems or concerns.
+-
+-  Each version is given a distinguishing version number.  If the
+-Program specifies that a certain numbered version of the GNU General
+-Public License "or any later version" applies to it, you have the
+-option of following the terms and conditions either of that numbered
+-version or of any later version published by the Free Software
+-Foundation.  If the Program does not specify a version number of the
+-GNU General Public License, you may choose any version ever published
+-by the Free Software Foundation.
+-
+-  If the Program specifies that a proxy can decide which future
+-versions of the GNU General Public License can be used, that proxy's
+-public statement of acceptance of a version permanently authorizes you
+-to choose that version for the Program.
+-
+-  Later license versions may give you additional or different
+-permissions.  However, no additional obligations are imposed on any
+-author or copyright holder as a result of your choosing to follow a
+-later version.
+-
+-  15. Disclaimer of Warranty.
+-
+-  THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
+-APPLICABLE LAW.  EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
+-HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY
+-OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO,
+-THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+-PURPOSE.  THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM
+-IS WITH YOU.  SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
+-ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
+-
+-  16. Limitation of Liability.
+-
+-  IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
+-WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
+-THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
+-GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
+-USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
+-DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
+-PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
+-EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
+-SUCH DAMAGES.
+-
+-  17. Interpretation of Sections 15 and 16.
+-
+-  If the disclaimer of warranty and limitation of liability provided
+-above cannot be given local legal effect according to their terms,
+-reviewing courts shall apply local law that most closely approximates
+-an absolute waiver of all civil liability in connection with the
+-Program, unless a warranty or assumption of liability accompanies a
+-copy of the Program in return for a fee.
+-
+-                     END OF TERMS AND CONDITIONS
+-
+-            How to Apply These Terms to Your New Programs
+-
+-  If you develop a new program, and you want it to be of the greatest
+-possible use to the public, the best way to achieve this is to make it
+-free software which everyone can redistribute and change under these terms.
+-
+-  To do so, attach the following notices to the program.  It is safest
+-to attach them to the start of each source file to most effectively
+-state the exclusion of warranty; and each file should have at least
+-the "copyright" line and a pointer to where the full notice is found.
+-
+-    <one line to give the program's name and a brief idea of what it does.>
+-    Copyright (C) <year>  <name of author>
+-
+-    This program is free software: you can redistribute it and/or modify
+-    it under the terms of the GNU General Public License as published by
+-    the Free Software Foundation, either version 3 of the License, or
+-    (at your option) any later version.
+-
+-    This program is distributed in the hope that it will be useful,
+-    but WITHOUT ANY WARRANTY; without even the implied warranty of
+-    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+-    GNU General Public License for more details.
+-
+-    You should have received a copy of the GNU General Public License
+-    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+-
+-Also add information on how to contact you by electronic and paper mail.
+-
+-  If the program does terminal interaction, make it output a short
+-notice like this when it starts in an interactive mode:
+-
+-    <program>  Copyright (C) <year>  <name of author>
+-    This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+-    This is free software, and you are welcome to redistribute it
+-    under certain conditions; type `show c' for details.
+-
+-The hypothetical commands `show w' and `show c' should show the appropriate
+-parts of the General Public License.  Of course, your program's commands
+-might be different; for a GUI interface, you would use an "about box".
+-
+-  You should also get your employer (if you work as a programmer) or school,
+-if any, to sign a "copyright disclaimer" for the program, if necessary.
+-For more information on this, and how to apply and follow the GNU GPL, see
+-<http://www.gnu.org/licenses/>.
+-
+-  The GNU General Public License does not permit incorporating your program
+-into proprietary programs.  If your program is a subroutine library, you
+-may consider it more useful to permit linking proprietary applications with
+-the library.  If this is what you want to do, use the GNU Lesser General
+-Public License instead of this License.  But first, please read
+-<http://www.gnu.org/philosophy/why-not-lgpl.html>.
+diff --git a/Source/ThirdParty/ANGLE/tools/flex-bison/third_party/skeletons/README.chromium b/Source/ThirdParty/ANGLE/tools/flex-bison/third_party/skeletons/README.chromium
+deleted file mode 100644
+index 215d82e6366..00000000000
+--- a/Source/ThirdParty/ANGLE/tools/flex-bison/third_party/skeletons/README.chromium
++++ /dev/null
+@@ -1,10 +0,0 @@
+-Name: Bison skeletons
+-URL: https://www.gnu.org/software/bison/
+-Version: 3.3.2
+-License: GPL
+-License File: LICENSE
+-Security critical: no
+-
+-Description:
+-Bison is a parser generator. It uses skeleton files as templates for building
+-similar languages.
+diff --git a/Source/ThirdParty/ANGLE/tools/flex-bison/third_party/skeletons/bison.m4 b/Source/ThirdParty/ANGLE/tools/flex-bison/third_party/skeletons/bison.m4
+deleted file mode 100644
+index e3591875c0f..00000000000
+--- a/Source/ThirdParty/ANGLE/tools/flex-bison/third_party/skeletons/bison.m4
++++ /dev/null
+@@ -1,1111 +0,0 @@
+-                                                            -*- Autoconf -*-
+-
+-# Language-independent M4 Macros for Bison.
+-
+-# Copyright (C) 2002, 2004-2015, 2018-2019 Free Software Foundation,
+-# Inc.
+-
+-# This program is free software: you can redistribute it and/or modify
+-# it under the terms of the GNU General Public License as published by
+-# the Free Software Foundation, either version 3 of the License, or
+-# (at your option) any later version.
+-#
+-# This program is distributed in the hope that it will be useful,
+-# but WITHOUT ANY WARRANTY; without even the implied warranty of
+-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+-# GNU General Public License for more details.
+-#
+-# You should have received a copy of the GNU General Public License
+-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+-
+-
+-## ---------------- ##
+-## Identification.  ##
+-## ---------------- ##
+-
+-# b4_generated_by
+-# ---------------
+-m4_define([b4_generated_by],
+-[b4_comment([A Bison parser, made by GNU Bison b4_version.])
+-])
+-
+-# b4_copyright(TITLE, [YEARS])
+-# ----------------------------
+-# If YEARS are not defined, use b4_copyright_years.
+-m4_define([b4_copyright],
+-[b4_generated_by
+-b4_comment([$1
+-
+-]m4_dquote(m4_text_wrap([Copyright (C)
+-]m4_ifval([$2], [[$2]], [m4_defn([b4_copyright_years])])[
+-Free Software Foundation, Inc.]))[
+-
+-This program is free software: you can redistribute it and/or modify
+-it under the terms of the GNU General Public License as published by
+-the Free Software Foundation, either version 3 of the License, or
+-(at your option) any later version.
+-
+-This program is distributed in the hope that it will be useful,
+-but WITHOUT ANY WARRANTY; without even the implied warranty of
+-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+-GNU General Public License for more details.
+-
+-You should have received a copy of the GNU General Public License
+-along with this program.  If not, see <http://www.gnu.org/licenses/>.])
+-
+-b4_comment([As a special exception, you may create a larger work that contains
+-part or all of the Bison parser skeleton and distribute that work
+-under terms of your choice, so long as that work isn't itself a
+-parser generator using the skeleton or a modified version thereof
+-as a parser skeleton.  Alternatively, if you modify or redistribute
+-the parser skeleton itself, you may (at your option) remove this
+-special exception, which will cause the skeleton and the resulting
+-Bison output files to be licensed under the GNU General Public
+-License without this special exception.
+-
+-This special exception was added by the Free Software Foundation in
+-version 2.2 of Bison.])
+-])
+-
+-
+-# b4_disclaimer
+-# -------------
+-# Issue a warning about private implementation details.
+-m4_define([b4_disclaimer],
+-[b4_comment([Undocumented macros, especially those whose name start with YY_,
+-are private implementation details.  Do not rely on them.])
+-])
+-
+-
+-
+-# b4_required_version_if(VERSION, IF_NEWER, IF_OLDER)
+-# ---------------------------------------------------
+-# If the version %require'd by the user is VERSION (or newer) expand
+-# IF_NEWER, otherwise IF_OLDER.  VERSION should be an integer, e.g.,
+-# 302 for 3.2.
+-m4_define([b4_required_version_if],
+-[m4_if(m4_eval($1 <= b4_required_version),
+-              [1], [$2], [$3])])
+-
+-
+-## -------- ##
+-## Output.  ##
+-## -------- ##
+-
+-# b4_output_begin(FILE1, FILE2)
+-# -----------------------------
+-# Enable output, i.e., send to diversion 0, expand after "#", and
+-# generate the tag to output into FILE.  Must be followed by EOL.
+-# FILE is FILE1 concatenated to FILE2.  FILE2 can be empty, or be
+-# absolute: do the right thing.
+-m4_define([b4_output_begin],
+-[m4_changecom()
+-m4_divert_push(0)dnl
+-@output(m4_unquote([$1])@,m4_unquote([$2])@)@dnl
+-])
+-
+-
+-# b4_output_end
+-# -------------
+-# Output nothing, restore # as comment character (no expansions after #).
+-m4_define([b4_output_end],
+-[m4_divert_pop(0)
+-m4_changecom([#])
+-])
+-
+-
+-# b4_divert_kill(CODE)
+-# --------------------
+-# Expand CODE for its side effects, discard its output.
+-m4_define([b4_divert_kill],
+-[m4_divert_text([KILL], [$1])])
+-
+-
+-# b4_define_silent(MACRO, CODE)
+-# -----------------------------
+-# Same as m4_define, but throw away the expansion of CODE.
+-m4_define([b4_define_silent],
+-[m4_define([$1], [b4_divert_kill([$2])])])
+-
+-
+-## ---------------- ##
+-## Error handling.  ##
+-## ---------------- ##
+-
+-# The following error handling macros print error directives that should not
+-# become arguments of other macro invocations since they would likely then be
+-# mangled.  Thus, they print to stdout directly.
+-
+-# b4_cat(TEXT)
+-# ------------
+-# Write TEXT to stdout.  Precede the final newline with an @ so that it's
+-# escaped.  For example:
+-#
+-#   b4_cat([[@complain(invalid input@)]])
+-m4_define([b4_cat],
+-[m4_syscmd([cat <<'_m4eof'
+-]m4_bpatsubst(m4_dquote($1), [_m4eof], [_m4@`eof])[@
+-_m4eof
+-])dnl
+-m4_if(m4_sysval, [0], [], [m4_fatal([$0: cannot write to stdout])])])
+-
+-# b4_error(KIND, START, END, FORMAT, [ARG1], [ARG2], ...)
+-# -------------------------------------------------------
+-# Write @KIND(START@,END@,FORMAT@,ARG1@,ARG2@,...@) to stdout.
+-#
+-# For example:
+-#
+-#   b4_error([[complain]], [[input.y:2.3]], [[input.y:5.4]],
+-#            [[invalid %s]], [[foo]])
+-m4_define([b4_error],
+-[b4_cat([[@complain][(]$1[@,]$2[@,]$3[@,]$4[]]dnl
+-[m4_if([$#], [4], [],
+-       [m4_foreach([b4_arg],
+-                   m4_dquote(m4_shift(m4_shift(m4_shift(m4_shift($@))))),
+-                   [[@,]b4_arg])])[@)]])])
+-
+-# b4_warn(FORMAT, [ARG1], [ARG2], ...)
+-# ------------------------------------
+-# Write @warn(FORMAT@,ARG1@,ARG2@,...@) to stdout.
+-#
+-# For example:
+-#
+-#   b4_warn([[invalid value for '%s': %s]], [[foo]], [[3]])
+-#
+-# As a simple test suite, this:
+-#
+-#   m4_divert(-1)
+-#   m4_define([asdf], [ASDF])
+-#   m4_define([fsa], [FSA])
+-#   m4_define([fdsa], [FDSA])
+-#   b4_warn_at([[[asdf), asdf]]], [[[fsa), fsa]]], [[[fdsa), fdsa]]])
+-#   b4_warn_at([[asdf), asdf]], [[fsa), fsa]], [[fdsa), fdsa]])
+-#   b4_warn_at()
+-#   b4_warn_at(1)
+-#   b4_warn_at(1, 2)
+-#
+-# Should produce this without newlines:
+-#
+-#   @warn_at([asdf), asdf]@,@,@,[fsa), fsa]@,[fdsa), fdsa]@)
+-#   @warn(asdf), asdf@,@,@,fsa), fsa@,fdsa), fdsa@)
+-#   @warn(@)
+-#   @warn(1@)
+-#   @warn(1@,2@)
+-m4_define([b4_warn],
+-[b4_error([[warn]], [], [], $@)])
+-
+-# b4_warn_at(START, END, FORMAT, [ARG1], [ARG2], ...)
+-# ---------------------------------------------------
+-# Write @warn(START@,END@,FORMAT@,ARG1@,ARG2@,...@) to stdout.
+-#
+-# For example:
+-#
+-#   b4_warn_at([[input.y:2.3]], [[input.y:5.4]], [[invalid %s]], [[foo]])
+-m4_define([b4_warn_at],
+-[b4_error([[warn]], $@)])
+-
+-# b4_complain(FORMAT, [ARG1], [ARG2], ...)
+-# ----------------------------------------
+-# Bounce to b4_complain_at.
+-#
+-# See b4_warn example.
+-m4_define([b4_complain],
+-[b4_error([[complain]], [], [], $@)])
+-
+-# b4_complain_at(START, END, FORMAT, [ARG1], [ARG2], ...)
+-# -------------------------------------------------------
+-# Write @complain(START@,END@,FORMAT@,ARG1@,ARG2@,...@) to stdout.
+-#
+-# See b4_warn_at example.
+-m4_define([b4_complain_at],
+-[b4_error([[complain]], $@)])
+-
+-# b4_fatal(FORMAT, [ARG1], [ARG2], ...)
+-# -------------------------------------
+-# Bounce to b4_fatal_at.
+-#
+-# See b4_warn example.
+-m4_define([b4_fatal],
+-[b4_error([[fatal]], [], [], $@)dnl
+-m4_exit(1)])
+-
+-# b4_fatal_at(START, END, FORMAT, [ARG1], [ARG2], ...)
+-# ----------------------------------------------------
+-# Write @fatal(START@,END@,FORMAT@,ARG1@,ARG2@,...@) to stdout and exit.
+-#
+-# See b4_warn_at example.
+-m4_define([b4_fatal_at],
+-[b4_error([[fatal]], $@)dnl
+-m4_exit(1)])
+-
+-
+-## ------------ ##
+-## Data Types.  ##
+-## ------------ ##
+-
+-# b4_ints_in(INT1, INT2, LOW, HIGH)
+-# ---------------------------------
+-# Return 1 iff both INT1 and INT2 are in [LOW, HIGH], 0 otherwise.
+-m4_define([b4_ints_in],
+-[m4_eval([$3 <= $1 && $1 <= $4 && $3 <= $2 && $2 <= $4])])
+-
+-
+-# b4_subtract(LHS, RHS)
+-# ---------------------
+-# Evaluate LHS - RHS if they are integer literals, otherwise expand
+-# to (LHS) - (RHS).
+-m4_define([b4_subtract],
+-[m4_bmatch([$1$2], [^[0123456789]*$],
+-           [m4_eval([$1 - $2])],
+-           [($1) - ($2)])])
+-
+-# b4_join(ARG1, ...)
+-# _b4_join(ARG1, ...)
+-# -------------------
+-# Join with comma, skipping empty arguments.
+-# b4_join calls itself recursively until it sees the first non-empty
+-# argument, then calls _b4_join (i.e., `_$0`) which prepends each
+-# non-empty argument with a comma.
+-m4_define([b4_join],
+-[m4_if([$#$1],
+-       [1], [],
+-       [m4_ifval([$1],
+-                 [$1[]_$0(m4_shift($@))],
+-                 [$0(m4_shift($@))])])])
+-
+-# _b4_join(ARGS1, ...)
+-# --------------------
+-m4_define([_b4_join],
+-[m4_if([$#$1],
+-       [1], [],
+-       [m4_ifval([$1], [, $1])[]$0(m4_shift($@))])])
+-
+-
+-
+-
+-# b4_integral_parser_tables_map(MACRO)
+-# -------------------------------------
+-# Map MACRO on all the integral tables.  MACRO is expected to have
+-# the signature MACRO(TABLE-NAME, CONTENT, COMMENT).
+-m4_define([b4_integral_parser_tables_map],
+-[$1([pact], [b4_pact],
+-    [[YYPACT[STATE-NUM] -- Index in YYTABLE of the portion describing
+-STATE-NUM.]])
+-
+-$1([defact], [b4_defact],
+-   [[YYDEFACT[STATE-NUM] -- Default reduction number in state STATE-NUM.
+-Performed when YYTABLE does not specify something else to do.  Zero
+-means the default is an error.]])
+-
+-$1([pgoto], [b4_pgoto], [[YYPGOTO[NTERM-NUM].]])
+-
+-$1([defgoto], [b4_defgoto], [[YYDEFGOTO[NTERM-NUM].]])
+-
+-$1([table], [b4_table],
+-   [[YYTABLE[YYPACT[STATE-NUM]] -- What to do in state STATE-NUM.  If
+-positive, shift that token.  If negative, reduce the rule whose
+-number is the opposite.  If YYTABLE_NINF, syntax error.]])
+-
+-$1([check], [b4_check])
+-
+-$1([stos], [b4_stos],
+-   [[YYSTOS[STATE-NUM] -- The (internal number of the) accessing
+-symbol of state STATE-NUM.]])
+-
+-$1([r1], [b4_r1],
+-   [[YYR1[YYN] -- Symbol number of symbol that rule YYN derives.]])
+-
+-$1([r2], [b4_r2],
+-   [[YYR2[YYN] -- Number of symbols on the right hand side of rule YYN.]])
+-])
+-
+-
+-# b4_parser_tables_declare
+-# b4_parser_tables_define
+-# ------------------------
+-# Define/declare the (deterministic) parser tables.
+-m4_define([b4_parser_tables_declare],
+-[b4_integral_parser_tables_map([b4_integral_parser_table_declare])])
+-
+-m4_define([b4_parser_tables_define],
+-[b4_integral_parser_tables_map([b4_integral_parser_table_define])])
+-
+-
+-
+-## ------------------ ##
+-## Decoding options.  ##
+-## ------------------ ##
+-
+-# b4_flag_if(FLAG, IF-TRUE, IF-FALSE)
+-# -----------------------------------
+-# Run IF-TRUE if b4_FLAG_flag is 1, IF-FALSE if FLAG is 0, otherwise fail.
+-m4_define([b4_flag_if],
+-[m4_case(b4_$1_flag,
+-         [0], [$3],
+-         [1], [$2],
+-         [m4_fatal([invalid $1 value: ]b4_$1_flag)])])
+-
+-
+-# b4_define_flag_if(FLAG)
+-# -----------------------
+-# Define "b4_FLAG_if(IF-TRUE, IF-FALSE)" that depends on the
+-# value of the Boolean FLAG.
+-m4_define([b4_define_flag_if],
+-[_b4_define_flag_if($[1], $[2], [$1])])
+-
+-# _b4_define_flag_if($1, $2, FLAG)
+-# --------------------------------
+-# Work around the impossibility to define macros inside macros,
+-# because issuing '[$1]' is not possible in M4.  GNU M4 should provide
+-# $$1 a la M5/TeX.
+-m4_define([_b4_define_flag_if],
+-[m4_if([$1$2], $[1]$[2], [],
+-       [m4_fatal([$0: Invalid arguments: $@])])dnl
+-m4_define([b4_$3_if],
+-          [b4_flag_if([$3], [$1], [$2])])])
+-
+-
+-# b4_FLAG_if(IF-TRUE, IF-FALSE)
+-# -----------------------------
+-# Expand IF-TRUE, if FLAG is true, IF-FALSE otherwise.
+-b4_define_flag_if([defines])            # Whether headers are requested.
+-b4_define_flag_if([glr])                # Whether a GLR parser is requested.
+-b4_define_flag_if([nondeterministic])   # Whether conflicts should be handled.
+-b4_define_flag_if([token_table])        # Whether yytoken_table is demanded.
+-b4_define_flag_if([yacc])               # Whether POSIX Yacc is emulated.
+-
+-
+-# b4_glr_cc_if([IF-TRUE], [IF-FALSE])
+-# -----------------------------------
+-m4_define([b4_glr_cc_if],
+-          [m4_if(b4_skeleton, ["glr.cc"], $@)])
+-
+-
+-## --------- ##
+-## Symbols.  ##
+-## --------- ##
+-
+-# For a description of the Symbol handling, see README.
+-#
+-# The following macros provide access to symbol related values.
+-
+-# __b4_symbol(NUM, FIELD)
+-# -----------------------
+-# Recover a FIELD about symbol #NUM.  Thanks to m4_indir, fails if
+-# undefined.
+-m4_define([__b4_symbol],
+-[m4_indir([b4_symbol($1, $2)])])
+-
+-
+-# _b4_symbol(NUM, FIELD)
+-# ----------------------
+-# Recover a FIELD about symbol #NUM (or "orig NUM").  Fails if
+-# undefined.
+-m4_define([_b4_symbol],
+-[m4_ifdef([b4_symbol($1, number)],
+-          [__b4_symbol(m4_indir([b4_symbol($1, number)]), $2)],
+-          [__b4_symbol([$1], [$2])])])
+-
+-
+-
+-# b4_symbol(NUM, FIELD)
+-# ---------------------
+-# Recover a FIELD about symbol #NUM (or "orig NUM").  Fails if
+-# undefined.  If FIELD = id, prepend the token prefix.
+-m4_define([b4_symbol],
+-[m4_case([$2],
+-         [id],    [m4_do([b4_percent_define_get([api.token.prefix])],
+-                         [_b4_symbol([$1], [id])])],
+-         [_b4_symbol($@)])])
+-
+-
+-# b4_symbol_if(NUM, FIELD, IF-TRUE, IF-FALSE)
+-# -------------------------------------------
+-# If FIELD about symbol #NUM is 1 expand IF-TRUE, if is 0, expand IF-FALSE.
+-# Otherwise an error.
+-m4_define([b4_symbol_if],
+-[m4_case(b4_symbol([$1], [$2]),
+-         [1], [$3],
+-         [0], [$4],
+-         [m4_fatal([$0: field $2 of $1 is not a Boolean:] b4_symbol([$1], [$2]))])])
+-
+-
+-# b4_symbol_tag_comment(SYMBOL-NUM)
+-# ---------------------------------
+-# Issue a comment giving the tag of symbol NUM.
+-m4_define([b4_symbol_tag_comment],
+-[b4_comment([b4_symbol([$1], [tag])])
+-])
+-
+-
+-# b4_symbol_action_location(SYMBOL-NUM, KIND)
+-# -------------------------------------------
+-# Report the location of the KIND action as FILE:LINE.
+-m4_define([b4_symbol_action_location],
+-[b4_symbol([$1], [$2_file]):b4_syncline([b4_symbol([$1], [$2_line])])])
+-
+-
+-# b4_symbol_action(SYMBOL-NUM, KIND)
+-# ----------------------------------
+-# Run the action KIND (destructor or printer) for SYMBOL-NUM.
+-m4_define([b4_symbol_action],
+-[b4_symbol_if([$1], [has_$2],
+-[b4_dollar_pushdef([(*yyvaluep)],
+-                   [$1],
+-                   [],
+-                   [(*yylocationp)])dnl
+-    _b4_symbol_case([$1])[]dnl
+-b4_syncline([b4_symbol([$1], [$2_line])], [b4_symbol([$1], [$2_file])])
+-      b4_symbol([$1], [$2])
+-b4_syncline([@oline@], [@ofile@])
+-        break;
+-
+-b4_dollar_popdef[]dnl
+-])])
+-
+-
+-# b4_symbol_destructor(SYMBOL-NUM)
+-# b4_symbol_printer(SYMBOL-NUM)
+-# --------------------------------
+-m4_define([b4_symbol_destructor], [b4_symbol_action([$1], [destructor])])
+-m4_define([b4_symbol_printer],    [b4_symbol_action([$1], [printer])])
+-
+-
+-# b4_symbol_actions(KIND, [TYPE = yytype])
+-# ----------------------------------------
+-# Emit the symbol actions for KIND ("printer" or "destructor").
+-# Dispatch on TYPE.
+-m4_define([b4_symbol_actions],
+-[m4_pushdef([b4_actions_], m4_expand([b4_symbol_foreach([b4_symbol_$1])]))dnl
+-m4_ifval(m4_defn([b4_actions_]),
+-[switch (m4_default([$2], [yytype]))
+-    {
+-m4_defn([b4_actions_])[]dnl
+-      default:
+-        break;
+-    }dnl
+-],
+-[YYUSE (m4_default([$2], [yytype]));])dnl
+-m4_popdef([b4_actions_])dnl
+-])
+-
+-# _b4_symbol_case(SYMBOL-NUM)
+-# ---------------------------
+-# Issue a "case NUM" for SYMBOL-NUM.  Ends with its EOL to make it
+-# easier to use with m4_map, but then, use []dnl to suppress the last
+-# one.
+-m4_define([_b4_symbol_case],
+-[case b4_symbol([$1], [number]): b4_symbol_tag_comment([$1])])
+-])
+-
+-
+-# b4_symbol_foreach(MACRO)
+-# ------------------------
+-# Invoke MACRO(SYMBOL-NUM) for each SYMBOL-NUM.
+-m4_define([b4_symbol_foreach],
+-          [m4_map([$1], m4_defn([b4_symbol_numbers]))])
+-
+-# b4_symbol_map(MACRO)
+-# --------------------
+-# Return a list (possibly empty elements) of MACRO invoked for each
+-# SYMBOL-NUM.
+-m4_define([b4_symbol_map],
+-[m4_map_args_sep([$1(], [)], [,], b4_symbol_numbers)])
+-
+-
+-# b4_token_visible_if(NUM, IF-TRUE, IF-FALSE)
+-# -------------------------------------------
+-# Whether NUM denotes a token that has an exported definition (i.e.,
+-# shows in enum yytokentype).
+-m4_define([b4_token_visible_if],
+-[b4_symbol_if([$1], [is_token],
+-              [b4_symbol_if([$1], [has_id], [$2], [$3])],
+-              [$3])])
+-
+-# b4_token_has_definition(NUM)
+-# ----------------------------
+-# 1 if NUM is visible, nothing otherwise.
+-m4_define([b4_token_has_definition],
+-[b4_token_visible_if([$1], [1])])
+-
+-# b4_any_token_visible_if([IF-TRUE], [IF-FALSE])
+-# ----------------------------------------------
+-# Whether there is a token that needs to be defined.
+-m4_define([b4_any_token_visible_if],
+-[m4_ifval(b4_symbol_foreach([b4_token_has_definition]),
+-          [$1], [$2])])
+-
+-
+-# b4_token_format(FORMAT, NUM)
+-# ----------------------------
+-m4_define([b4_token_format],
+-[b4_token_visible_if([$2],
+-[m4_quote(m4_format([$1],
+-                     [b4_symbol([$2], [id])],
+-                     [b4_symbol([$2], [user_number])]))])])
+-
+-
+-## ------- ##
+-## Types.  ##
+-## ------- ##
+-
+-# _b4_type_action(NUMS)
+-# ---------------------
+-# Run actions for the symbol NUMS that all have the same type-name.
+-# Skip NUMS that have no type-name.
+-#
+-# To specify the action to run, define b4_dollar_dollar(SYMBOL-NUM,
+-# TAG, TYPE).
+-m4_define([_b4_type_action],
+-[b4_symbol_if([$1], [has_type],
+-[m4_map([      _b4_symbol_case], [$@])[]dnl
+-        b4_dollar_dollar([b4_symbol([$1], [number])],
+-                         [b4_symbol([$1], [tag])],
+-                         [b4_symbol([$1], [type])]);
+-        break;
+-
+-])])
+-
+-# b4_type_foreach(MACRO)
+-# ----------------------
+-# Invoke MACRO(SYMBOL-NUMS) for each set of SYMBOL-NUMS for each type set.
+-m4_define([b4_type_foreach],
+-          [m4_map([$1], m4_defn([b4_type_names]))])
+-
+-
+-
+-## ----------- ##
+-## Synclines.  ##
+-## ----------- ##
+-
+-# b4_basename(NAME)
+-# -----------------
+-# Similar to POSIX basename; the differences don't matter here.
+-# Beware that NAME is not evaluated.
+-m4_define([b4_basename],
+-[m4_bpatsubst([$1], [^.*/\([^/]+\)/*$], [\1])])
+-
+-
+-# b4_syncline(LINE, FILE)
+-# -----------------------
+-m4_define([b4_syncline],
+-[b4_flag_if([synclines],
+-[b4_sync_start([$1], [$2]) b4_sync_end([__line__],
+-                                       [b4_basename(m4_quote(__file__))])[]dnl
+-])])
+-
+-# b4_sync_start(LINE, FILE)
+-# -----------------------
+-# Syncline for the new place.  Typically a directive for the compiler.
+-m4_define([b4_sync_start], [b4_comment([$2:$1])])
+-
+-# b4_sync_end(LINE, FILE)
+-# -----------------------
+-# Syncline for the current place, which ends.  Typically a comment
+-# left for the reader.
+-m4_define([b4_sync_end],   [b4_comment([$2:$1])])
+-
+-
+-# b4_user_code(USER-CODE)
+-# -----------------------
+-# Emit code from the user, ending it with synclines.
+-m4_define([b4_user_code],
+-[$1
+-b4_syncline([@oline@], [@ofile@])])
+-
+-
+-# b4_define_user_code(MACRO, COMMENT)
+-# -----------------------------------
+-# From b4_MACRO, if defined, build b4_user_MACRO that includes the synclines.
+-m4_define([b4_define_user_code],
+-[m4_define([b4_user_$1],
+-           [m4_ifdef([b4_$1],
+-                     [m4_ifval([$2],
+-                               [b4_comment([$2])
+-])b4_user_code([b4_$1])])])])
+-
+-# b4_user_actions
+-# b4_user_initial_action
+-# b4_user_post_prologue
+-# b4_user_pre_prologue
+-# b4_user_union_members
+-# ----------------------
+-# Macros that issue user code, ending with synclines.
+-b4_define_user_code([actions])
+-b4_define_user_code([initial_action], [User initialization code.])
+-b4_define_user_code([post_prologue], [Second part of user prologue.])
+-b4_define_user_code([pre_prologue], [First part of user prologue.])
+-b4_define_user_code([union_members])
+-
+-
+-# b4_check_user_names(WHAT, USER-LIST, BISON-NAMESPACE)
+-# -----------------------------------------------------
+-# Complain if any name of type WHAT is used by the user (as recorded in
+-# USER-LIST) but is not used by Bison (as recorded by macros in the
+-# namespace BISON-NAMESPACE).
+-#
+-# USER-LIST must expand to a list specifying all user occurrences of all names
+-# of type WHAT.   Each item in the list must be a triplet specifying one
+-# occurrence: name, start boundary, and end boundary.  Empty string names are
+-# fine.  An empty list is fine.
+-#
+-# For example, to define b4_foo_user_names to be used for USER-LIST with three
+-# name occurrences and with correct quoting:
+-#
+-#   m4_define([b4_foo_user_names],
+-#             [[[[[[bar]], [[parser.y:1.7]], [[parser.y:1.16]]]],
+-#               [[[[bar]], [[parser.y:5.7]], [[parser.y:5.16]]]],
+-#               [[[[baz]], [[parser.y:8.7]], [[parser.y:8.16]]]]]])
+-#
+-# The macro BISON-NAMESPACE(bar) must be defined iff the name bar of type WHAT
+-# is used by Bison (in the front-end or in the skeleton).  Empty string names
+-# are fine, but it would be ugly for Bison to actually use one.
+-#
+-# For example, to use b4_foo_bison_names for BISON-NAMESPACE and define that
+-# the names bar and baz are used by Bison:
+-#
+-#   m4_define([b4_foo_bison_names(bar)])
+-#   m4_define([b4_foo_bison_names(baz)])
+-#
+-# To invoke b4_check_user_names with TYPE foo, with USER-LIST
+-# b4_foo_user_names, with BISON-NAMESPACE b4_foo_bison_names, and with correct
+-# quoting:
+-#
+-#   b4_check_user_names([[foo]], [b4_foo_user_names],
+-#                       [[b4_foo_bison_names]])
+-m4_define([b4_check_user_names],
+-[m4_foreach([b4_occurrence], $2,
+-[m4_pushdef([b4_occurrence], b4_occurrence)dnl
+-m4_pushdef([b4_user_name], m4_car(b4_occurrence))dnl
+-m4_pushdef([b4_start], m4_car(m4_shift(b4_occurrence)))dnl
+-m4_pushdef([b4_end], m4_shift(m4_shift(b4_occurrence)))dnl
+-m4_ifndef($3[(]m4_quote(b4_user_name)[)],
+-          [b4_complain_at([b4_start], [b4_end],
+-                          [[%s '%s' is not used]],
+-                          [$1], [b4_user_name])])[]dnl
+-m4_popdef([b4_occurrence])dnl
+-m4_popdef([b4_user_name])dnl
+-m4_popdef([b4_start])dnl
+-m4_popdef([b4_end])dnl
+-])])
+-
+-
+-
+-## --------------------- ##
+-## b4_percent_define_*.  ##
+-## --------------------- ##
+-
+-
+-# b4_percent_define_use(VARIABLE)
+-# -------------------------------
+-# Declare that VARIABLE was used.
+-m4_define([b4_percent_define_use],
+-[m4_define([b4_percent_define_bison_variables(]$1[)])dnl
+-])
+-
+-# b4_percent_define_get(VARIABLE, [DEFAULT])
+-# ------------------------------------------
+-# Mimic muscle_percent_define_get in ../src/muscle-tab.h.  That is, if
+-# the %define variable VARIABLE is defined, emit its value.  Contrary
+-# to its C counterpart, return DEFAULT otherwise.  Also, record
+-# Bison's usage of VARIABLE by defining
+-# b4_percent_define_bison_variables(VARIABLE).
+-#
+-# For example:
+-#
+-#   b4_percent_define_get([[foo]])
+-m4_define([b4_percent_define_get],
+-[b4_percent_define_use([$1])dnl
+-_b4_percent_define_ifdef([$1],
+-                         [m4_indir([b4_percent_define(]$1[)])],
+-                         [$2])])
+-
+-# b4_percent_define_get_loc(VARIABLE)
+-# -----------------------------------
+-# Mimic muscle_percent_define_get_loc in ../src/muscle-tab.h exactly.  That is,
+-# if the %define variable VARIABLE is undefined, complain fatally since that's
+-# a Bison or skeleton error.  Otherwise, return its definition location in a
+-# form appropriate for the first two arguments of b4_warn_at, b4_complain_at, or
+-# b4_fatal_at.  Don't record this as a Bison usage of VARIABLE as there's no
+-# reason to suspect that the user-supplied value has yet influenced the output.
+-#
+-# For example:
+-#
+-#   b4_complain_at(b4_percent_define_get_loc([[foo]]), [[invalid foo]])
+-m4_define([b4_percent_define_get_loc],
+-[m4_ifdef([b4_percent_define_loc(]$1[)],
+-          [m4_pushdef([b4_loc], m4_indir([b4_percent_define_loc(]$1[)]))dnl
+-b4_loc[]dnl
+-m4_popdef([b4_loc])],
+-          [b4_fatal([[$0: undefined %%define variable '%s']], [$1])])])
+-
+-# b4_percent_define_get_kind(VARIABLE)
+-# ------------------------------------
+-# Get the kind (code, keyword, string) of VARIABLE, i.e., how its
+-# value was defined (braces, not delimiters, quotes).
+-#
+-# If the %define variable VARIABLE is undefined, complain fatally
+-# since that's a Bison or skeleton error.  Don't record this as a
+-# Bison usage of VARIABLE as there's no reason to suspect that the
+-# user-supplied value has yet influenced the output.
+-m4_define([b4_percent_define_get_kind],
+-[m4_ifdef([b4_percent_define_kind(]$1[)],
+-          [m4_indir([b4_percent_define_kind(]$1[)])],
+-          [b4_fatal([[$0: undefined %%define variable '%s']], [$1])])])
+-
+-# b4_percent_define_get_syncline(VARIABLE)
+-# ----------------------------------------
+-# Mimic muscle_percent_define_get_syncline in ../src/muscle-tab.h exactly.
+-# That is, if the %define variable VARIABLE is undefined, complain fatally
+-# since that's a Bison or skeleton error.  Otherwise, return its definition
+-# location as a b4_syncline invocation.  Don't record this as a Bison usage of
+-# VARIABLE as there's no reason to suspect that the user-supplied value has yet
+-# influenced the output.
+-#
+-# For example:
+-#
+-#   b4_percent_define_get_syncline([[foo]])
+-m4_define([b4_percent_define_get_syncline],
+-[m4_ifdef([b4_percent_define_syncline(]$1[)],
+-          [m4_indir([b4_percent_define_syncline(]$1[)])],
+-          [b4_fatal([[$0: undefined %%define variable '%s']], [$1])])])
+-
+-# _b4_percent_define_ifdef(VARIABLE, IF-TRUE, [IF-FALSE])
+-# ------------------------------------------------------
+-# If the %define variable VARIABLE is defined, expand IF-TRUE, else expand
+-# IF-FALSE.  Don't record usage of VARIABLE.
+-#
+-# For example:
+-#
+-#   _b4_percent_define_ifdef([[foo]], [[it's defined]], [[it's undefined]])
+-m4_define([_b4_percent_define_ifdef],
+-[m4_ifdef([b4_percent_define(]$1[)],
+-          [$2],
+-          [$3])])
+-
+-# b4_percent_define_ifdef(VARIABLE, IF-TRUE, [IF-FALSE])
+-# ------------------------------------------------------
+-# Mimic muscle_percent_define_ifdef in ../src/muscle-tab.h exactly.  That is,
+-# if the %define variable VARIABLE is defined, expand IF-TRUE, else expand
+-# IF-FALSE.  Also, record Bison's usage of VARIABLE by defining
+-# b4_percent_define_bison_variables(VARIABLE).
+-#
+-# For example:
+-#
+-#   b4_percent_define_ifdef([[foo]], [[it's defined]], [[it's undefined]])
+-m4_define([b4_percent_define_ifdef],
+-[_b4_percent_define_ifdef([$1],
+-                         [b4_percent_define_use([$1])$2],
+-                         [$3])])
+-
+-
+-# b4_percent_define_check_file_complain(VARIABLE)
+-# -----------------------------------------------
+-# Warn about %define variable VARIABLE having an incorrect
+-# value.
+-m4_define([b4_percent_define_check_file_complain],
+-[b4_complain_at(b4_percent_define_get_loc([$1]),
+-                [[%%define variable '%s' requires 'none' or '"..."' values]],
+-                [$1])])
+-
+-
+-# b4_percent_define_check_file(MACRO, VARIABLE, DEFAULT)
+-# ------------------------------------------------------
+-# If the %define variable VARIABLE:
+-# - is undefined, then if DEFAULT is non-empty, define MACRO to DEFAULT
+-# - is a string, define MACRO to its value
+-# - is the keyword 'none', do nothing
+-# - otherwise, warn about the incorrect value.
+-m4_define([b4_percent_define_check_file],
+-[b4_percent_define_ifdef([$2],
+-  [m4_case(b4_percent_define_get_kind([$2]),
+-    [string],
+-         [m4_define([$1], b4_percent_define_get([$2]))],
+-    [keyword],
+-         [m4_if(b4_percent_define_get([$2]), [none], [],
+-                [b4_percent_define_check_file_complain([$2])])],
+-    [b4_percent_define_check_file_complain([$2])])
+-   ],
+-   [m4_ifval([$3],
+-             [m4_define([$1], [$3])])])
+-])
+-
+-
+-
+-## --------- ##
+-## Options.  ##
+-## --------- ##
+-
+-
+-# b4_percent_define_flag_if(VARIABLE, IF-TRUE, [IF-FALSE])
+-# --------------------------------------------------------
+-# Mimic muscle_percent_define_flag_if in ../src/muscle-tab.h exactly.  That is,
+-# if the %define variable VARIABLE is defined to "" or "true", expand IF-TRUE.
+-# If it is defined to "false", expand IF-FALSE.  Complain if it is undefined
+-# (a Bison or skeleton error since the default value should have been set
+-# already) or defined to any other value (possibly a user error).  Also, record
+-# Bison's usage of VARIABLE by defining
+-# b4_percent_define_bison_variables(VARIABLE).
+-#
+-# For example:
+-#
+-#   b4_percent_define_flag_if([[foo]], [[it's true]], [[it's false]])
+-m4_define([b4_percent_define_flag_if],
+-[b4_percent_define_ifdef([$1],
+-  [m4_case(b4_percent_define_get([$1]),
+-           [], [$2], [true], [$2], [false], [$3],
+-           [m4_expand_once([b4_complain_at(b4_percent_define_get_loc([$1]),
+-                                           [[invalid value for %%define Boolean variable '%s']],
+-                                           [$1])],
+-                           [[b4_percent_define_flag_if($1)]])])],
+-  [b4_fatal([[$0: undefined %%define variable '%s']], [$1])])])
+-
+-
+-# b4_percent_define_default(VARIABLE, DEFAULT, [KIND = keyword])
+-# --------------------------------------------------------------
+-# Mimic muscle_percent_define_default in ../src/muscle-tab.h exactly.  That is,
+-# if the %define variable VARIABLE is undefined, set its value to DEFAULT.
+-# Don't record this as a Bison usage of VARIABLE as there's no reason to
+-# suspect that the value has yet influenced the output.
+-#
+-# For example:
+-#
+-#   b4_percent_define_default([[foo]], [[default value]])
+-m4_define([b4_percent_define_default],
+-[_b4_percent_define_ifdef([$1], [],
+-           [m4_define([b4_percent_define(]$1[)], [$2])dnl
+-            m4_define([b4_percent_define_kind(]$1[)],
+-                      [m4_default([$3], [keyword])])dnl
+-            m4_define([b4_percent_define_loc(]$1[)],
+-                      [[[[<skeleton default value>:-1.-1]],
+-                        [[<skeleton default value>:-1.-1]]]])dnl
+-            m4_define([b4_percent_define_syncline(]$1[)], [[]])])])
+-
+-
+-# b4_percent_define_if_define(NAME, [VARIABLE = NAME])
+-# ----------------------------------------------------
+-# Define b4_NAME_if that executes its $1 or $2 depending whether
+-# VARIABLE was %defined.  The characters '.' and `-' in VARIABLE are mapped
+-# to '_'.
+-m4_define([_b4_percent_define_if_define],
+-[m4_define(m4_bpatsubst([b4_$1_if], [[-.]], [_]),
+-           [b4_percent_define_flag_if(m4_default([$2], [$1]),
+-                                      [$3], [$4])])])
+-m4_define([b4_percent_define_if_define],
+-[b4_percent_define_default([m4_default([$2], [$1])], [[false]])
+-_b4_percent_define_if_define([$1], [$2], $[1], $[2])])
+-
+-
+-# b4_percent_define_check_kind(VARIABLE, KIND, [DIAGNOSTIC = complain])
+-# ---------------------------------------------------------------------
+-m4_define([b4_percent_define_check_kind],
+-[_b4_percent_define_ifdef([$1],
+-  [m4_if(b4_percent_define_get_kind([$1]), [$2], [],
+-    [b4_error([m4_default([$3], [complain])],
+-              b4_percent_define_get_loc([$1]),
+-              [m4_case([$2],
+-                 [code],    [[%%define variable '%s' requires '{...}' values]],
+-                 [keyword], [[%%define variable '%s' requires keyword values]],
+-                 [string],  [[%%define variable '%s' requires '"..."' values]])],
+-              [$1])])])dnl
+-])
+-
+-
+-# b4_percent_define_check_values(VALUES)
+-# --------------------------------------
+-# Mimic muscle_percent_define_check_values in ../src/muscle-tab.h exactly
+-# except that the VALUES structure is more appropriate for M4.  That is, VALUES
+-# is a list of sublists of strings.  For each sublist, the first string is the
+-# name of a %define variable, and all remaining strings in that sublist are the
+-# valid values for that variable.  Complain if such a variable is undefined (a
+-# Bison error since the default value should have been set already) or defined
+-# to any other value (possibly a user error).  Don't record this as a Bison
+-# usage of the variable as there's no reason to suspect that the value has yet
+-# influenced the output.
+-#
+-# For example:
+-#
+-#   b4_percent_define_check_values([[[[foo]], [[foo-value1]], [[foo-value2]]]],
+-#                                  [[[[bar]], [[bar-value1]]]])
+-m4_define([b4_percent_define_check_values],
+-[m4_foreach([b4_sublist], m4_quote($@),
+-            [_b4_percent_define_check_values(b4_sublist)])])
+-
+-m4_define([_b4_percent_define_check_values],
+-[_b4_percent_define_ifdef([$1],
+-  [b4_percent_define_check_kind(]$1[, [keyword], [deprecated])dnl
+-   m4_pushdef([b4_good_value], [0])dnl
+-   m4_if($#, 1, [],
+-         [m4_foreach([b4_value], m4_dquote(m4_shift($@)),
+-                     [m4_if(m4_indir([b4_percent_define(]$1[)]), b4_value,
+-                            [m4_define([b4_good_value], [1])])])])dnl
+-   m4_if(b4_good_value, [0],
+-         [b4_complain_at(b4_percent_define_get_loc([$1]),
+-                         [[invalid value for %%define variable '%s': '%s']],
+-                         [$1],
+-                         m4_dquote(m4_indir([b4_percent_define(]$1[)])))
+-          m4_foreach([b4_value], m4_dquote(m4_shift($@)),
+-                     [b4_error([[note]], b4_percent_define_get_loc([$1]), []
+-                                     [[accepted value: '%s']],
+-                                     m4_dquote(b4_value))])])dnl
+-   m4_popdef([b4_good_value])],
+-  [b4_fatal([[$0: undefined %%define variable '%s']], [$1])])])
+-
+-# b4_percent_code_get([QUALIFIER])
+-# --------------------------------
+-# If any %code blocks for QUALIFIER are defined, emit them beginning with a
+-# comment and ending with synclines and a newline.  If QUALIFIER is not
+-# specified or empty, do this for the unqualified %code blocks.  Also, record
+-# Bison's usage of QUALIFIER (if specified) by defining
+-# b4_percent_code_bison_qualifiers(QUALIFIER).
+-#
+-# For example, to emit any unqualified %code blocks followed by any %code
+-# blocks for the qualifier foo:
+-#
+-#   b4_percent_code_get
+-#   b4_percent_code_get([[foo]])
+-m4_define([b4_percent_code_get],
+-[m4_pushdef([b4_macro_name], [[b4_percent_code(]$1[)]])dnl
+-m4_ifval([$1], [m4_define([b4_percent_code_bison_qualifiers(]$1[)])])dnl
+-m4_ifdef(b4_macro_name,
+-[b4_comment([m4_if([$#], [0], [[Unqualified %code]],
+-                   [["%code ]$1["]])[ blocks.]])
+-b4_user_code([m4_indir(b4_macro_name)])
+-])dnl
+-m4_popdef([b4_macro_name])])
+-
+-# b4_percent_code_ifdef(QUALIFIER, IF-TRUE, [IF-FALSE])
+-# -----------------------------------------------------
+-# If any %code blocks for QUALIFIER (or unqualified %code blocks if
+-# QUALIFIER is empty) are defined, expand IF-TRUE, else expand IF-FALSE.
+-# Also, record Bison's usage of QUALIFIER (if specified) by defining
+-# b4_percent_code_bison_qualifiers(QUALIFIER).
+-m4_define([b4_percent_code_ifdef],
+-[m4_ifdef([b4_percent_code(]$1[)],
+-          [m4_ifval([$1], [m4_define([b4_percent_code_bison_qualifiers(]$1[)])])$2],
+-          [$3])])
+-
+-
+-## ------------------ ##
+-## Common variables.  ##
+-## ------------------ ##
+-
+-
+-# b4_parse_assert_if([IF-ASSERTIONS-ARE-USED], [IF-NOT])
+-# b4_parse_trace_if([IF-DEBUG-TRACES-ARE-ENABLED], [IF-NOT])
+-# b4_token_ctor_if([IF-YYLEX-RETURNS-A-TOKEN], [IF-NOT])
+-# ----------------------------------------------------------
+-b4_percent_define_if_define([token_ctor], [api.token.constructor])
+-b4_percent_define_if_define([locations])     # Whether locations are tracked.
+-b4_percent_define_if_define([parse.assert])
+-b4_percent_define_if_define([parse.trace])
+-
+-
+-# b4_bison_locations_if([IF-TRUE])
+-# --------------------------------
+-# Expand IF-TRUE if using locations, and using the default location
+-# type.
+-m4_define([b4_bison_locations_if],
+-[b4_locations_if([b4_percent_define_ifdef([[api.location.type]], [], [$1])])])
+-
+-
+-# b4_error_verbose_if([IF-ERRORS-ARE-VERBOSE], [IF-NOT])
+-# ------------------------------------------------------
+-# Map %define parse.error "(simple|verbose)" to b4_error_verbose_if and
+-# b4_error_verbose_flag.
+-b4_percent_define_default([[parse.error]], [[simple]])
+-b4_percent_define_check_values([[[[parse.error]],
+-                                 [[simple]], [[verbose]]]])
+-m4_define([b4_error_verbose_flag],
+-          [m4_case(b4_percent_define_get([[parse.error]]),
+-                   [simple],  [[0]],
+-                   [verbose], [[1]])])
+-b4_define_flag_if([error_verbose])
+-
+-# yytoken_table is needed to support verbose errors.
+-b4_error_verbose_if([m4_define([b4_token_table_flag], [1])])
+-
+-
+-# b4_variant_if([IF-VARIANT-ARE-USED], [IF-NOT])
+-# ----------------------------------------------
+-b4_percent_define_if_define([variant])
+-m4_define([b4_variant_flag], [[0]])
+-b4_percent_define_ifdef([[api.value.type]],
+-   [m4_case(b4_percent_define_get_kind([[api.value.type]]), [keyword],
+-            [m4_case(b4_percent_define_get([[api.value.type]]), [variant],
+-                    [m4_define([b4_variant_flag], [[1]])])])])
+-b4_define_flag_if([variant])
+-
+-
+-## ----------------------------------------------------------- ##
+-## After processing the skeletons, check that all the user's   ##
+-## %define variables and %code qualifiers were used by Bison.  ##
+-## ----------------------------------------------------------- ##
+-
+-m4_define([b4_check_user_names_wrap],
+-[m4_ifdef([b4_percent_]$1[_user_]$2[s],
+-          [b4_check_user_names([[%]$1 $2],
+-                               [b4_percent_]$1[_user_]$2[s],
+-                               [[b4_percent_]$1[_bison_]$2[s]])])])
+-
+-m4_wrap_lifo([
+-b4_check_user_names_wrap([[define]], [[variable]])
+-b4_check_user_names_wrap([[code]], [[qualifier]])
+-])
+-
+-
+-## ---------------- ##
+-## Default values.  ##
+-## ---------------- ##
+-
+-# m4_define_default([b4_lex_param], [])   dnl breaks other skeletons
+-m4_define_default([b4_epilogue], [])
+-m4_define_default([b4_parse_param], [])
+-
+-# The initial column and line.
+-m4_define_default([b4_location_initial_column], [1])
+-m4_define_default([b4_location_initial_line],   [1])
+-
+-
+-## --------------- ##
+-## Sanity checks.  ##
+-## --------------- ##
+-
+-# api.location.prefix={...} (Java and C++).
+-b4_percent_define_check_kind([api.location.type], [code], [deprecated])
+-
+-# api.position.prefix={...} (Java).
+-b4_percent_define_check_kind([api.position.type], [code], [deprecated])
+-
+-# api.prefix >< %name-prefix.
+-b4_percent_define_check_kind([api.prefix], [code], [deprecated])
+-b4_percent_define_ifdef([api.prefix],
+-[m4_ifdef([b4_prefix],
+-[b4_complain_at(b4_percent_define_get_loc([api.prefix]),
+-                [['%s' and '%s' cannot be used together]],
+-                [%name-prefix],
+-                [%define api.prefix])])])
+-
+-# api.token.prefix={...}
+-# Make it a warning for those who used betas of Bison 3.0.
+-b4_percent_define_check_kind([api.token.prefix], [code], [deprecated])
+-
+-# api.value.type >< %union.
+-b4_percent_define_ifdef([api.value.type],
+-[m4_ifdef([b4_union_members],
+-[b4_complain_at(b4_percent_define_get_loc([api.value.type]),
+-                [['%s' and '%s' cannot be used together]],
+-                [%union],
+-                [%define api.value.type])])])
+-
+-# api.value.type=union >< %yacc.
+-b4_percent_define_ifdef([api.value.type],
+-[m4_if(b4_percent_define_get([api.value.type]), [union],
+-[b4_yacc_if(dnl
+-[b4_complain_at(b4_percent_define_get_loc([api.value.type]),
+-                [['%s' and '%s' cannot be used together]],
+-                [%yacc],
+-                [%define api.value.type "union"])])])])
+-
+-# api.value.union.name.
+-b4_percent_define_check_kind([api.value.union.name], [keyword])
+diff --git a/Source/ThirdParty/ANGLE/tools/flex-bison/third_party/skeletons/c-like.m4 b/Source/ThirdParty/ANGLE/tools/flex-bison/third_party/skeletons/c-like.m4
+deleted file mode 100644
+index 8d891b67ef9..00000000000
+--- a/Source/ThirdParty/ANGLE/tools/flex-bison/third_party/skeletons/c-like.m4
++++ /dev/null
+@@ -1,66 +0,0 @@
+-                                                            -*- Autoconf -*-
+-
+-# Common code for C-like languages (C, C++, Java, etc.)
+-
+-# Copyright (C) 2012-2015, 2018-2019 Free Software Foundation, Inc.
+-
+-# This program is free software: you can redistribute it and/or modify
+-# it under the terms of the GNU General Public License as published by
+-# the Free Software Foundation, either version 3 of the License, or
+-# (at your option) any later version.
+-#
+-# This program is distributed in the hope that it will be useful,
+-# but WITHOUT ANY WARRANTY; without even the implied warranty of
+-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+-# GNU General Public License for more details.
+-#
+-# You should have received a copy of the GNU General Public License
+-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+-
+-# _b4_comment(TEXT, OPEN, CONTINUE, END)
+-# --------------------------------------
+-# Put TEXT in comment.  Avoid trailing spaces: don't indent empty lines.
+-# Avoid adding indentation to the first line, as the indentation comes
+-# from OPEN.  That's why we don't patsubst([$1], [^\(.\)], [   \1]).
+-#
+-# Prefix all the output lines with PREFIX.
+-m4_define([_b4_comment],
+-[$2[]m4_bpatsubst(m4_expand([[$1]]), [
+-\(.\)], [
+-$3\1])$4])
+-
+-
+-# b4_comment(TEXT, [PREFIX])
+-# --------------------------
+-# Put TEXT in comment.  Prefix all the output lines with PREFIX.
+-m4_define([b4_comment],
+-[_b4_comment([$1], [$2/* ], [$2   ], [  */])])
+-
+-
+-
+-
+-# _b4_dollar_dollar(VALUE, SYMBOL-NUM, FIELD, DEFAULT-FIELD)
+-# ----------------------------------------------------------
+-# If FIELD (or DEFAULT-FIELD) is non-null, return "VALUE.FIELD",
+-# otherwise just VALUE.  Be sure to pass "(VALUE)" if VALUE is a
+-# pointer.
+-m4_define([_b4_dollar_dollar],
+-[b4_symbol_value([$1],
+-                 [$2],
+-                 m4_if([$3], [[]],
+-                       [[$4]], [[$3]]))])
+-
+-# b4_dollar_pushdef(VALUE-POINTER, SYMBOL-NUM, [TYPE_TAG], LOCATION)
+-# b4_dollar_popdef
+-# ------------------------------------------------------------------
+-# Define b4_dollar_dollar for VALUE-POINTER and DEFAULT-FIELD,
+-# and b4_at_dollar for LOCATION.
+-m4_define([b4_dollar_pushdef],
+-[m4_pushdef([b4_dollar_dollar],
+-            [_b4_dollar_dollar([$1], [$2], m4_dquote($][1), [$3])])dnl
+-m4_pushdef([b4_at_dollar], [$4])dnl
+-])
+-m4_define([b4_dollar_popdef],
+-[m4_popdef([b4_at_dollar])dnl
+-m4_popdef([b4_dollar_dollar])dnl
+-])
+diff --git a/Source/ThirdParty/ANGLE/tools/flex-bison/third_party/skeletons/c.m4 b/Source/ThirdParty/ANGLE/tools/flex-bison/third_party/skeletons/c.m4
+deleted file mode 100644
+index 3cde04a9571..00000000000
+--- a/Source/ThirdParty/ANGLE/tools/flex-bison/third_party/skeletons/c.m4
++++ /dev/null
+@@ -1,883 +0,0 @@
+-                                                            -*- Autoconf -*-
+-
+-# C M4 Macros for Bison.
+-
+-# Copyright (C) 2002, 2004-2015, 2018-2019 Free Software Foundation,
+-# Inc.
+-
+-# This program is free software: you can redistribute it and/or modify
+-# it under the terms of the GNU General Public License as published by
+-# the Free Software Foundation, either version 3 of the License, or
+-# (at your option) any later version.
+-#
+-# This program is distributed in the hope that it will be useful,
+-# but WITHOUT ANY WARRANTY; without even the implied warranty of
+-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+-# GNU General Public License for more details.
+-#
+-# You should have received a copy of the GNU General Public License
+-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+-
+-m4_include(b4_skeletonsdir/[c-like.m4])
+-
+-# b4_tocpp(STRING)
+-# ----------------
+-# Convert STRING into a valid C macro name.
+-m4_define([b4_tocpp],
+-[m4_toupper(m4_bpatsubst(m4_quote($1), [[^a-zA-Z0-9]+], [_]))])
+-
+-
+-# b4_cpp_guard(FILE)
+-# ------------------
+-# A valid C macro name to use as a CPP header guard for FILE.
+-m4_define([b4_cpp_guard],
+-[[YY_]b4_tocpp(m4_defn([b4_prefix])/[$1])[_INCLUDED]])
+-
+-
+-# b4_cpp_guard_open(FILE)
+-# b4_cpp_guard_close(FILE)
+-# ------------------------
+-# If FILE does not expand to nothing, open/close CPP inclusion guards for FILE.
+-m4_define([b4_cpp_guard_open],
+-[m4_ifval(m4_quote($1),
+-[#ifndef b4_cpp_guard([$1])
+-# define b4_cpp_guard([$1])])])
+-
+-m4_define([b4_cpp_guard_close],
+-[m4_ifval(m4_quote($1),
+-[#endif b4_comment([!b4_cpp_guard([$1])])])])
+-
+-
+-## ---------------- ##
+-## Identification.  ##
+-## ---------------- ##
+-
+-# b4_identification
+-# -----------------
+-# Depends on individual skeletons to define b4_pure_flag, b4_push_flag, or
+-# b4_pull_flag if they use the values of the %define variables api.pure or
+-# api.push-pull.
+-m4_define([b4_identification],
+-[[/* Identify Bison output.  */
+-#define YYBISON 1
+-
+-/* Bison version.  */
+-#define YYBISON_VERSION "]b4_version["
+-
+-/* Skeleton name.  */
+-#define YYSKELETON_NAME ]b4_skeleton[]m4_ifdef([b4_pure_flag], [[
+-
+-/* Pure parsers.  */
+-#define YYPURE ]b4_pure_flag])[]m4_ifdef([b4_push_flag], [[
+-
+-/* Push parsers.  */
+-#define YYPUSH ]b4_push_flag])[]m4_ifdef([b4_pull_flag], [[
+-
+-/* Pull parsers.  */
+-#define YYPULL ]b4_pull_flag])[
+-]])
+-
+-
+-## ---------------- ##
+-## Default values.  ##
+-## ---------------- ##
+-
+-# b4_api_prefix, b4_api_PREFIX
+-# ----------------------------
+-# Corresponds to %define api.prefix
+-b4_percent_define_default([[api.prefix]], [[yy]])
+-m4_define([b4_api_prefix],
+-[b4_percent_define_get([[api.prefix]])])
+-m4_define([b4_api_PREFIX],
+-[m4_toupper(b4_api_prefix)])
+-
+-
+-# b4_prefix
+-# ---------
+-# If the %name-prefix is not given, it is api.prefix.
+-m4_define_default([b4_prefix], [b4_api_prefix])
+-
+-# If the %union is not named, its name is YYSTYPE.
+-b4_percent_define_default([[api.value.union.name]],
+-                          [b4_api_PREFIX[][STYPE]])
+-
+-
+-## ------------------------ ##
+-## Pure/impure interfaces.  ##
+-## ------------------------ ##
+-
+-# b4_lex_formals
+-# --------------
+-# All the yylex formal arguments.
+-# b4_lex_param arrives quoted twice, but we want to keep only one level.
+-m4_define([b4_lex_formals],
+-[b4_pure_if([[[[YYSTYPE *yylvalp]], [[&yylval]]][]dnl
+-b4_locations_if([, [[YYLTYPE *yyllocp], [&yylloc]]])])dnl
+-m4_ifdef([b4_lex_param], [, ]b4_lex_param)])
+-
+-
+-# b4_lex
+-# ------
+-# Call yylex.
+-m4_define([b4_lex],
+-[b4_function_call([yylex], [int], b4_lex_formals)])
+-
+-
+-# b4_user_args
+-# ------------
+-m4_define([b4_user_args],
+-[m4_ifset([b4_parse_param], [, b4_args(b4_parse_param)])])
+-
+-
+-# b4_parse_param
+-# --------------
+-# If defined, b4_parse_param arrives double quoted, but below we prefer
+-# it to be single quoted.
+-m4_define([b4_parse_param],
+-b4_parse_param)
+-
+-
+-# b4_parse_param_for(DECL, FORMAL, BODY)
+-# ---------------------------------------
+-# Iterate over the user parameters, binding the declaration to DECL,
+-# the formal name to FORMAL, and evaluating the BODY.
+-m4_define([b4_parse_param_for],
+-[m4_foreach([$1_$2], m4_defn([b4_parse_param]),
+-[m4_pushdef([$1], m4_unquote(m4_car($1_$2)))dnl
+-m4_pushdef([$2], m4_shift($1_$2))dnl
+-$3[]dnl
+-m4_popdef([$2])dnl
+-m4_popdef([$1])dnl
+-])])
+-
+-# b4_parse_param_use([VAL], [LOC])
+-# --------------------------------
+-# 'YYUSE' VAL, LOC if locations are enabled, and all the parse-params.
+-m4_define([b4_parse_param_use],
+-[m4_ifvaln([$1], [  YYUSE ([$1]);])dnl
+-b4_locations_if([m4_ifvaln([$2], [  YYUSE ([$2]);])])dnl
+-b4_parse_param_for([Decl], [Formal], [  YYUSE (Formal);
+-])dnl
+-])
+-
+-
+-## ------------ ##
+-## Data Types.  ##
+-## ------------ ##
+-
+-# b4_int_type(MIN, MAX)
+-# ---------------------
+-# Return the smallest int type able to handle numbers ranging from
+-# MIN to MAX (included).
+-m4_define([b4_int_type],
+-[m4_if(b4_ints_in($@,      [0],   [255]), [1], [unsigned char],
+-       b4_ints_in($@,   [-128],   [127]), [1], [signed char],
+-
+-       b4_ints_in($@,      [0], [65535]), [1], [unsigned short],
+-       b4_ints_in($@, [-32768], [32767]), [1], [short],
+-
+-       m4_eval([0 <= $1]),                [1], [unsigned],
+-
+-                                               [int])])
+-
+-
+-# b4_int_type_for(NAME)
+-# ---------------------
+-# Return the smallest int type able to handle numbers ranging from
+-# 'NAME_min' to 'NAME_max' (included).
+-m4_define([b4_int_type_for],
+-[b4_int_type($1_min, $1_max)])
+-
+-
+-# b4_table_value_equals(TABLE, VALUE, LITERAL)
+-# --------------------------------------------
+-# Without inducing a comparison warning from the compiler, check if the
+-# literal value LITERAL equals VALUE from table TABLE, which must have
+-# TABLE_min and TABLE_max defined.
+-m4_define([b4_table_value_equals],
+-[m4_if(m4_eval($3 < m4_indir([b4_]$1[_min])
+-               || m4_indir([b4_]$1[_max]) < $3), [1],
+-       [[0]],
+-       [(!!(($2) == ($3)))])])
+-
+-
+-## ----------------- ##
+-## Compiler issues.  ##
+-## ----------------- ##
+-
+-# b4_attribute_define([noreturn])
+-# -------------------------------
+-# Provide portable compiler "attributes".  If "noreturn" is passed, define
+-# _Noreturn.
+-m4_define([b4_attribute_define],
+-[[#ifndef YY_ATTRIBUTE
+-# if (defined __GNUC__                                               \
+-      && (2 < __GNUC__ || (__GNUC__ == 2 && 96 <= __GNUC_MINOR__)))  \
+-     || defined __SUNPRO_C && 0x5110 <= __SUNPRO_C
+-#  define YY_ATTRIBUTE(Spec) __attribute__(Spec)
+-# else
+-#  define YY_ATTRIBUTE(Spec) /* empty */
+-# endif
+-#endif
+-
+-#ifndef YY_ATTRIBUTE_PURE
+-# define YY_ATTRIBUTE_PURE   YY_ATTRIBUTE ((__pure__))
+-#endif
+-
+-#ifndef YY_ATTRIBUTE_UNUSED
+-# define YY_ATTRIBUTE_UNUSED YY_ATTRIBUTE ((__unused__))
+-#endif
+-
+-]m4_bmatch([$1], [\bnoreturn\b], [[/* The _Noreturn keyword of C11.  */
+-#if ! defined _Noreturn
+-# if defined __cplusplus && 201103L <= __cplusplus
+-#  define _Noreturn [[noreturn]]
+-# elif !(defined __STDC_VERSION__ && 201112 <= __STDC_VERSION__)
+-#  if (3 <= __GNUC__ || (__GNUC__ == 2 && 8 <= __GNUC_MINOR__) \
+-       || 0x5110 <= __SUNPRO_C)
+-#   define _Noreturn __attribute__ ((__noreturn__))
+-#  elif defined _MSC_VER && 1200 <= _MSC_VER
+-#   define _Noreturn __declspec (noreturn)
+-#  else
+-#   define _Noreturn
+-#  endif
+-# endif
+-#endif
+-
+-]])[/* Suppress unused-variable warnings by "using" E.  */
+-#if ! defined lint || defined __GNUC__
+-# define YYUSE(E) ((void) (E))
+-#else
+-# define YYUSE(E) /* empty */
+-#endif
+-
+-#if defined __GNUC__ && ! defined __ICC && 407 <= __GNUC__ * 100 + __GNUC_MINOR__
+-/* Suppress an incorrect diagnostic about yylval being uninitialized.  */
+-# define YY_IGNORE_MAYBE_UNINITIALIZED_BEGIN \
+-    _Pragma ("GCC diagnostic push") \
+-    _Pragma ("GCC diagnostic ignored \"-Wuninitialized\"")\
+-    _Pragma ("GCC diagnostic ignored \"-Wmaybe-uninitialized\"")
+-# define YY_IGNORE_MAYBE_UNINITIALIZED_END \
+-    _Pragma ("GCC diagnostic pop")
+-#else
+-# define YY_INITIAL_VALUE(Value) Value
+-#endif
+-#ifndef YY_IGNORE_MAYBE_UNINITIALIZED_BEGIN
+-# define YY_IGNORE_MAYBE_UNINITIALIZED_BEGIN
+-# define YY_IGNORE_MAYBE_UNINITIALIZED_END
+-#endif
+-#ifndef YY_INITIAL_VALUE
+-# define YY_INITIAL_VALUE(Value) /* Nothing. */
+-#endif
+-]])
+-
+-
+-# b4_null_define
+-# --------------
+-# Portability issues: define a YY_NULLPTR appropriate for the current
+-# language (C, C++98, or C++11).
+-#
+-# In C++ pre C++11 it is standard practice to use 0 (not NULL) for the
+-# null pointer.  In C, prefer ((void*)0) to avoid having to include stdlib.h.
+-m4_define([b4_null_define],
+-[# ifndef YY_NULLPTR
+-#  if defined __cplusplus
+-#   if 201103L <= __cplusplus
+-#    define YY_NULLPTR nullptr
+-#   else
+-#    define YY_NULLPTR 0
+-#   endif
+-#  else
+-#   define YY_NULLPTR ((void*)0)
+-#  endif
+-# endif[]dnl
+-])
+-
+-
+-# b4_null
+-# -------
+-# Return a null pointer constant.
+-m4_define([b4_null], [YY_NULLPTR])
+-
+-
+-
+-## ---------##
+-## Values.  ##
+-## ---------##
+-
+-# b4_integral_parser_table_define(TABLE-NAME, CONTENT, COMMENT)
+-# -------------------------------------------------------------
+-# Define "yy<TABLE-NAME>" whose contents is CONTENT.
+-m4_define([b4_integral_parser_table_define],
+-[m4_ifvaln([$3], [b4_comment([$3], [  ])])dnl
+-static const b4_int_type_for([$2]) yy$1[[]] =
+-{
+-  $2
+-};dnl
+-])
+-
+-
+-## ------------------------- ##
+-## Assigning token numbers.  ##
+-## ------------------------- ##
+-
+-# b4_token_define(TOKEN-NUM)
+-# --------------------------
+-# Output the definition of this token as #define.
+-m4_define([b4_token_define],
+-[b4_token_format([#define %s %s], [$1])])
+-
+-# b4_token_defines
+-# ----------------
+-# Output the definition of the tokens.
+-m4_define([b4_token_defines],
+-[b4_any_token_visible_if([/* Tokens.  */
+-m4_join([
+-], b4_symbol_map([b4_token_define]))
+-])])
+-
+-
+-# b4_token_enum(TOKEN-NUM)
+-# ------------------------
+-# Output the definition of this token as an enum.
+-m4_define([b4_token_enum],
+-[b4_token_format([%s = %s], [$1])])
+-
+-
+-# b4_token_enums
+-# --------------
+-# Output the definition of the tokens (if there are) as enums.
+-m4_define([b4_token_enums],
+-[b4_any_token_visible_if([[/* Token type.  */
+-#ifndef ]b4_api_PREFIX[TOKENTYPE
+-# define ]b4_api_PREFIX[TOKENTYPE
+-  enum ]b4_api_prefix[tokentype
+-  {
+-    ]m4_join([,
+-    ],
+-             b4_symbol_map([b4_token_enum]))[
+-  };
+-#endif
+-]])])
+-
+-
+-# b4_token_enums_defines
+-# ----------------------
+-# Output the definition of the tokens (if there are any) as enums and,
+-# if POSIX Yacc is enabled, as #defines.
+-m4_define([b4_token_enums_defines],
+-[b4_token_enums[]b4_yacc_if([b4_token_defines])])
+-
+-
+-## ----------------- ##
+-## Semantic Values.  ##
+-## ----------------- ##
+-
+-
+-# b4_symbol_value(VAL, [SYMBOL-NUM], [TYPE-TAG])
+-# ----------------------------------------------
+-# See README.
+-m4_define([b4_symbol_value],
+-[m4_ifval([$3],
+-          [($1.$3)],
+-          [m4_ifval([$2],
+-                    [b4_symbol_if([$2], [has_type],
+-                                  [($1.b4_symbol([$2], [type]))],
+-                                  [$1])],
+-                    [$1])])])
+-
+-
+-## ---------------------- ##
+-## Defining C functions.  ##
+-## ---------------------- ##
+-
+-
+-# b4_function_define(NAME, RETURN-VALUE, [DECL1, NAME1], ...)
+-# -----------------------------------------------------------
+-# Declare the function NAME in C.
+-m4_define([b4_function_define],
+-[$2
+-$1 (b4_formals(m4_shift2($@)))[]dnl
+-])
+-
+-
+-# b4_formals([DECL1, NAME1], ...)
+-# -------------------------------
+-# The formal arguments of a C function definition.
+-m4_define([b4_formals],
+-[m4_if([$#], [0], [void],
+-       [$#$1], [1], [void],
+-               [m4_map_sep([b4_formal], [, ], [$@])])])
+-
+-m4_define([b4_formal],
+-[$1])
+-
+-
+-
+-## ----------------------- ##
+-## Declaring C functions.  ##
+-## ----------------------- ##
+-
+-
+-# b4_function_declare(NAME, RETURN-VALUE, [DECL1, NAME1], ...)
+-# ------------------------------------------------------------
+-# Declare the function NAME.
+-m4_define([b4_function_declare],
+-[$2 $1 (b4_formals(m4_shift2($@)));[]dnl
+-])
+-
+-
+-
+-
+-## --------------------- ##
+-## Calling C functions.  ##
+-## --------------------- ##
+-
+-
+-# b4_function_call(NAME, RETURN-VALUE, [DECL1, NAME1], ...)
+-# -----------------------------------------------------------
+-# Call the function NAME with arguments NAME1, NAME2 etc.
+-m4_define([b4_function_call],
+-[$1 (b4_args(m4_shift2($@)))[]dnl
+-])
+-
+-
+-# b4_args([DECL1, NAME1], ...)
+-# ----------------------------
+-# Output the arguments NAME1, NAME2...
+-m4_define([b4_args],
+-[m4_map_sep([b4_arg], [, ], [$@])])
+-
+-m4_define([b4_arg],
+-[$2])
+-
+-
+-## ----------- ##
+-## Synclines.  ##
+-## ----------- ##
+-
+-# b4_sync_start(LINE, FILE)
+-# -------------------------
+-m4_define([b4_sync_start], [[#]line $1 $2])
+-
+-
+-## -------------- ##
+-## User actions.  ##
+-## -------------- ##
+-
+-# b4_case(LABEL, STATEMENTS)
+-# --------------------------
+-m4_define([b4_case],
+-[  case $1:
+-$2
+-b4_syncline([@oline@], [@ofile@])
+-    break;])
+-
+-
+-# b4_predicate_case(LABEL, CONDITIONS)
+-# ------------------------------------
+-m4_define([b4_predicate_case],
+-[  case $1:
+-    if (! (
+-$2)) YYERROR;
+-b4_syncline([@oline@], [@ofile@])
+-    break;])
+-
+-
+-# b4_yydestruct_define
+-# --------------------
+-# Define the "yydestruct" function.
+-m4_define_default([b4_yydestruct_define],
+-[[/*-----------------------------------------------.
+-| Release the memory associated to this symbol.  |
+-`-----------------------------------------------*/
+-
+-]b4_function_define([yydestruct],
+-    [static void],
+-    [[const char *yymsg],    [yymsg]],
+-    [[int yytype],           [yytype]],
+-    [[YYSTYPE *yyvaluep],    [yyvaluep]][]dnl
+-b4_locations_if(            [, [[YYLTYPE *yylocationp], [yylocationp]]])[]dnl
+-m4_ifset([b4_parse_param], [, b4_parse_param]))[
+-{
+-]b4_parse_param_use([yyvaluep], [yylocationp])dnl
+-[  if (!yymsg)
+-    yymsg = "Deleting";
+-  YY_SYMBOL_PRINT (yymsg, yytype, yyvaluep, yylocationp);
+-
+-  YY_IGNORE_MAYBE_UNINITIALIZED_BEGIN
+-  ]b4_symbol_actions([destructor])[
+-  YY_IGNORE_MAYBE_UNINITIALIZED_END
+-}]dnl
+-])
+-
+-
+-# b4_yy_symbol_print_define
+-# -------------------------
+-# Define the "yy_symbol_print" function.
+-m4_define_default([b4_yy_symbol_print_define],
+-[[
+-/*-----------------------------------.
+-| Print this symbol's value on YYO.  |
+-`-----------------------------------*/
+-
+-]b4_function_define([yy_symbol_value_print],
+-    [static void],
+-               [[FILE *yyo],                            [yyo]],
+-               [[int yytype],                           [yytype]],
+-               [[YYSTYPE const * const yyvaluep],       [yyvaluep]][]dnl
+-b4_locations_if([, [[YYLTYPE const * const yylocationp], [yylocationp]]])[]dnl
+-m4_ifset([b4_parse_param], [, b4_parse_param]))[
+-{
+-  FILE *yyoutput = yyo;
+-]b4_parse_param_use([yyoutput], [yylocationp])dnl
+-[  if (!yyvaluep)
+-    return;]
+-dnl glr.c does not feature yytoknum.
+-m4_if(b4_skeleton, ["yacc.c"],
+-[[# ifdef YYPRINT
+-  if (yytype < YYNTOKENS)
+-    YYPRINT (yyo, yytoknum[yytype], *yyvaluep);
+-# endif
+-]])dnl
+-  b4_symbol_actions([printer])[
+-}
+-
+-
+-/*---------------------------.
+-| Print this symbol on YYO.  |
+-`---------------------------*/
+-
+-]b4_function_define([yy_symbol_print],
+-    [static void],
+-               [[FILE *yyo],                            [yyo]],
+-               [[int yytype],                           [yytype]],
+-               [[YYSTYPE const * const yyvaluep],       [yyvaluep]][]dnl
+-b4_locations_if([, [[YYLTYPE const * const yylocationp], [yylocationp]]])[]dnl
+-m4_ifset([b4_parse_param], [, b4_parse_param]))[
+-{
+-  YYFPRINTF (yyo, "%s %s (",
+-             yytype < YYNTOKENS ? "token" : "nterm", yytname[yytype]);
+-
+-]b4_locations_if([  YY_LOCATION_PRINT (yyo, *yylocationp);
+-  YYFPRINTF (yyo, ": ");
+-])dnl
+-[  yy_symbol_value_print (yyo, yytype, yyvaluep]dnl
+-b4_locations_if([, yylocationp])[]b4_user_args[);
+-  YYFPRINTF (yyo, ")");
+-}]dnl
+-])
+-
+-
+-## ---------------- ##
+-## api.value.type.  ##
+-## ---------------- ##
+-
+-
+-# ---------------------- #
+-# api.value.type=union.  #
+-# ---------------------- #
+-
+-# b4_symbol_type_register(SYMBOL-NUM)
+-# -----------------------------------
+-# Symbol SYMBOL-NUM has a type (for variant) instead of a type-tag.
+-# Extend the definition of %union's body (b4_union_members) with a
+-# field of that type, and extend the symbol's "type" field to point to
+-# the field name, instead of the type name.
+-m4_define([b4_symbol_type_register],
+-[m4_define([b4_symbol($1, type_tag)],
+-           [b4_symbol_if([$1], [has_id],
+-                         [b4_symbol([$1], [id])],
+-                         [yytype_[]b4_symbol([$1], [number])])])dnl
+-m4_append([b4_union_members],
+-m4_expand([
+-  b4_symbol_tag_comment([$1])dnl
+-  b4_symbol([$1], [type]) b4_symbol([$1], [type_tag]);]))
+-])
+-
+-
+-# b4_type_define_tag(SYMBOL1-NUM, ...)
+-# ------------------------------------
+-# For the batch of symbols SYMBOL1-NUM... (which all have the same
+-# type), enhance the %union definition for each of them, and set
+-# there "type" field to the field tag name, instead of the type name.
+-m4_define([b4_type_define_tag],
+-[b4_symbol_if([$1], [has_type],
+-              [m4_map([b4_symbol_type_register], [$@])])
+-])
+-
+-
+-# b4_symbol_value_union(VAL, SYMBOL-NUM, [TYPE])
+-# ----------------------------------------------
+-# Same of b4_symbol_value, but when api.value.type=union.
+-m4_define([b4_symbol_value_union],
+-[m4_ifval([$3],
+-          [(*($3*)(&$1))],
+-          [m4_ifval([$2],
+-                    [b4_symbol_if([$2], [has_type],
+-                                  [($1.b4_symbol([$2], [type_tag]))],
+-                                  [$1])],
+-                    [$1])])])
+-
+-
+-# b4_value_type_setup_union
+-# -------------------------
+-# Setup support for api.value.type=union.  Symbols are defined with a
+-# type instead of a union member name: build the corresponding union,
+-# and give the symbols their tag.
+-m4_define([b4_value_type_setup_union],
+-[m4_define([b4_union_members])
+-b4_type_foreach([b4_type_define_tag])
+-m4_copy_force([b4_symbol_value_union], [b4_symbol_value])
+-])
+-
+-
+-# -------------------------- #
+-# api.value.type = variant.  #
+-# -------------------------- #
+-
+-# b4_value_type_setup_variant
+-# ---------------------------
+-# Setup support for api.value.type=variant.  By default, fail, specialized
+-# by other skeletons.
+-m4_define([b4_value_type_setup_variant],
+-[b4_complain_at(b4_percent_define_get_loc([[api.value.type]]),
+-                [['%s' does not support '%s']],
+-                [b4_skeleton],
+-                [%define api.value.type variant])])
+-
+-
+-# _b4_value_type_setup_keyword
+-# ----------------------------
+-# api.value.type is defined with a keyword/string syntax.  Check if
+-# that is properly defined, and prepare its use.
+-m4_define([_b4_value_type_setup_keyword],
+-[b4_percent_define_check_values([[[[api.value.type]],
+-                                  [[none]],
+-                                  [[union]],
+-                                  [[union-directive]],
+-                                  [[variant]],
+-                                  [[yystype]]]])dnl
+-m4_case(b4_percent_define_get([[api.value.type]]),
+-        [union],   [b4_value_type_setup_union],
+-        [variant], [b4_value_type_setup_variant])])
+-
+-
+-# b4_value_type_setup
+-# -------------------
+-# Check if api.value.type is properly defined, and possibly prepare
+-# its use.
+-b4_define_silent([b4_value_type_setup],
+-[# Define default value.
+-b4_percent_define_ifdef([[api.value.type]], [],
+-[# %union => api.value.type=union-directive
+-m4_ifdef([b4_union_members],
+-[m4_define([b4_percent_define_kind(api.value.type)], [keyword])
+-m4_define([b4_percent_define(api.value.type)], [union-directive])],
+-[# no tag seen => api.value.type={int}
+-m4_if(b4_tag_seen_flag, 0,
+-[m4_define([b4_percent_define_kind(api.value.type)], [code])
+-m4_define([b4_percent_define(api.value.type)], [int])],
+-[# otherwise api.value.type=yystype
+-m4_define([b4_percent_define_kind(api.value.type)], [keyword])
+-m4_define([b4_percent_define(api.value.type)], [yystype])])])])
+-
+-# Set up.
+-m4_bmatch(b4_percent_define_get_kind([[api.value.type]]),
+-   [keyword\|string], [_b4_value_type_setup_keyword])
+-])
+-
+-
+-## -------------- ##
+-## Declarations.  ##
+-## -------------- ##
+-
+-
+-# b4_value_type_define
+-# --------------------
+-m4_define([b4_value_type_define],
+-[b4_value_type_setup[]dnl
+-/* Value type.  */
+-m4_bmatch(b4_percent_define_get_kind([[api.value.type]]),
+-[code],
+-[[#if ! defined ]b4_api_PREFIX[STYPE && ! defined ]b4_api_PREFIX[STYPE_IS_DECLARED
+-typedef ]b4_percent_define_get([[api.value.type]])[ ]b4_api_PREFIX[STYPE;
+-# define ]b4_api_PREFIX[STYPE_IS_TRIVIAL 1
+-# define ]b4_api_PREFIX[STYPE_IS_DECLARED 1
+-#endif
+-]],
+-[m4_bmatch(b4_percent_define_get([[api.value.type]]),
+-[union\|union-directive],
+-[[#if ! defined ]b4_api_PREFIX[STYPE && ! defined ]b4_api_PREFIX[STYPE_IS_DECLARED
+-]b4_percent_define_get_syncline([[api.value.union.name]])[
+-union ]b4_percent_define_get([[api.value.union.name]])[
+-{
+-]b4_user_union_members[
+-};
+-]b4_percent_define_get_syncline([[api.value.union.name]])[
+-typedef union ]b4_percent_define_get([[api.value.union.name]])[ ]b4_api_PREFIX[STYPE;
+-# define ]b4_api_PREFIX[STYPE_IS_TRIVIAL 1
+-# define ]b4_api_PREFIX[STYPE_IS_DECLARED 1
+-#endif
+-]])])])
+-
+-
+-# b4_location_type_define
+-# -----------------------
+-m4_define([b4_location_type_define],
+-[[/* Location type.  */
+-#if ! defined ]b4_api_PREFIX[LTYPE && ! defined ]b4_api_PREFIX[LTYPE_IS_DECLARED
+-typedef struct ]b4_api_PREFIX[LTYPE ]b4_api_PREFIX[LTYPE;
+-struct ]b4_api_PREFIX[LTYPE
+-{
+-  int first_line;
+-  int first_column;
+-  int last_line;
+-  int last_column;
+-};
+-# define ]b4_api_PREFIX[LTYPE_IS_DECLARED 1
+-# define ]b4_api_PREFIX[LTYPE_IS_TRIVIAL 1
+-#endif
+-]])
+-
+-
+-# b4_declare_yylstype
+-# -------------------
+-# Declarations that might either go into the header (if --defines) or
+-# in the parser body.  Declare YYSTYPE/YYLTYPE, and yylval/yylloc.
+-m4_define([b4_declare_yylstype],
+-[b4_value_type_define[]b4_locations_if([
+-b4_location_type_define])
+-
+-b4_pure_if([], [[extern ]b4_api_PREFIX[STYPE ]b4_prefix[lval;
+-]b4_locations_if([[extern ]b4_api_PREFIX[LTYPE ]b4_prefix[lloc;]])])[]dnl
+-])
+-
+-
+-# b4_YYDEBUG_define
+-# -----------------
+-m4_define([b4_YYDEBUG_define],
+-[[/* Debug traces.  */
+-]m4_if(b4_api_prefix, [yy],
+-[[#ifndef YYDEBUG
+-# define YYDEBUG ]b4_parse_trace_if([1], [0])[
+-#endif]],
+-[[#ifndef ]b4_api_PREFIX[DEBUG
+-# if defined YYDEBUG
+-#if YYDEBUG
+-#   define ]b4_api_PREFIX[DEBUG 1
+-#  else
+-#   define ]b4_api_PREFIX[DEBUG 0
+-#  endif
+-# else /* ! defined YYDEBUG */
+-#  define ]b4_api_PREFIX[DEBUG ]b4_parse_trace_if([1], [0])[
+-# endif /* ! defined YYDEBUG */
+-#endif  /* ! defined ]b4_api_PREFIX[DEBUG */]])[]dnl
+-])
+-
+-# b4_declare_yydebug
+-# ------------------
+-m4_define([b4_declare_yydebug],
+-[b4_YYDEBUG_define[
+-#if ]b4_api_PREFIX[DEBUG
+-extern int ]b4_prefix[debug;
+-#endif][]dnl
+-])
+-
+-# b4_yylloc_default_define
+-# ------------------------
+-# Define YYLLOC_DEFAULT.
+-m4_define([b4_yylloc_default_define],
+-[[/* YYLLOC_DEFAULT -- Set CURRENT to span from RHS[1] to RHS[N].
+-   If N is 0, then set CURRENT to the empty location which ends
+-   the previous symbol: RHS[0] (always defined).  */
+-
+-#ifndef YYLLOC_DEFAULT
+-# define YYLLOC_DEFAULT(Current, Rhs, N)                                \
+-    do                                                                  \
+-      if (N)                                                            \
+-        {                                                               \
+-          (Current).first_line   = YYRHSLOC (Rhs, 1).first_line;        \
+-          (Current).first_column = YYRHSLOC (Rhs, 1).first_column;      \
+-          (Current).last_line    = YYRHSLOC (Rhs, N).last_line;         \
+-          (Current).last_column  = YYRHSLOC (Rhs, N).last_column;       \
+-        }                                                               \
+-      else                                                              \
+-        {                                                               \
+-          (Current).first_line   = (Current).last_line   =              \
+-            YYRHSLOC (Rhs, 0).last_line;                                \
+-          (Current).first_column = (Current).last_column =              \
+-            YYRHSLOC (Rhs, 0).last_column;                              \
+-        }                                                               \
+-    while (0)
+-#endif
+-]])
+-
+-# b4_yy_location_print_define
+-# ---------------------------
+-# Define YY_LOCATION_PRINT.
+-m4_define([b4_yy_location_print_define],
+-[b4_locations_if([[
+-/* YY_LOCATION_PRINT -- Print the location on the stream.
+-   This macro was not mandated originally: define only if we know
+-   we won't break user code: when these are the locations we know.  */
+-
+-#ifndef YY_LOCATION_PRINT
+-# if defined ]b4_api_PREFIX[LTYPE_IS_TRIVIAL && ]b4_api_PREFIX[LTYPE_IS_TRIVIAL
+-
+-/* Print *YYLOCP on YYO.  Private, do not rely on its existence. */
+-
+-YY_ATTRIBUTE_UNUSED
+-]b4_function_define([yy_location_print_],
+-    [static int],
+-               [[FILE *yyo],                    [yyo]],
+-               [[YYLTYPE const * const yylocp], [yylocp]])[
+-{
+-  int res = 0;
+-  int end_col = 0 != yylocp->last_column ? yylocp->last_column - 1 : 0;
+-  if (0 <= yylocp->first_line)
+-    {
+-      res += YYFPRINTF (yyo, "%d", yylocp->first_line);
+-      if (0 <= yylocp->first_column)
+-        res += YYFPRINTF (yyo, ".%d", yylocp->first_column);
+-    }
+-  if (0 <= yylocp->last_line)
+-    {
+-      if (yylocp->first_line < yylocp->last_line)
+-        {
+-          res += YYFPRINTF (yyo, "-%d", yylocp->last_line);
+-          if (0 <= end_col)
+-            res += YYFPRINTF (yyo, ".%d", end_col);
+-        }
+-      else if (0 <= end_col && yylocp->first_column < end_col)
+-        res += YYFPRINTF (yyo, "-%d", end_col);
+-    }
+-  return res;
+- }
+-
+-#  define YY_LOCATION_PRINT(File, Loc)          \
+-  yy_location_print_ (File, &(Loc))
+-
+-# else
+-#  define YY_LOCATION_PRINT(File, Loc) ((void) 0)
+-# endif
+-#endif]],
+-[[/* This macro is provided for backward compatibility. */
+-#ifndef YY_LOCATION_PRINT
+-# define YY_LOCATION_PRINT(File, Loc) ((void) 0)
+-#endif]])
+-])
+-
+-# b4_yyloc_default
+-# ----------------
+-# Expand to a possible default value for yylloc.
+-m4_define([b4_yyloc_default],
+-[[
+-# if defined ]b4_api_PREFIX[LTYPE_IS_TRIVIAL && ]b4_api_PREFIX[LTYPE_IS_TRIVIAL
+-  = { ]m4_join([, ],
+-               m4_defn([b4_location_initial_line]),
+-               m4_defn([b4_location_initial_column]),
+-               m4_defn([b4_location_initial_line]),
+-               m4_defn([b4_location_initial_column]))[ }
+-# endif
+-]])
+diff --git a/Source/ThirdParty/ANGLE/tools/flex-bison/third_party/skeletons/yacc.c b/Source/ThirdParty/ANGLE/tools/flex-bison/third_party/skeletons/yacc.c
+deleted file mode 100644
+index 54e40e67412..00000000000
+--- a/Source/ThirdParty/ANGLE/tools/flex-bison/third_party/skeletons/yacc.c
++++ /dev/null
+@@ -1,1927 +0,0 @@
+-                                                             -*- C -*-
+-# Yacc compatible skeleton for Bison
+-
+-# Copyright (C) 1984, 1989-1990, 2000-2015, 2018-2019 Free Software
+-# Foundation, Inc.
+-
+-m4_pushdef([b4_copyright_years],
+-           [1984, 1989-1990, 2000-2015, 2018-2019])
+-
+-# This program is free software: you can redistribute it and/or modify
+-# it under the terms of the GNU General Public License as published by
+-# the Free Software Foundation, either version 3 of the License, or
+-# (at your option) any later version.
+-#
+-# This program is distributed in the hope that it will be useful,
+-# but WITHOUT ANY WARRANTY; without even the implied warranty of
+-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+-# GNU General Public License for more details.
+-#
+-# You should have received a copy of the GNU General Public License
+-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+-
+-# Check the value of %define api.push-pull.
+-b4_percent_define_default([[api.push-pull]], [[pull]])
+-b4_percent_define_check_values([[[[api.push-pull]],
+-                                 [[pull]], [[push]], [[both]]]])
+-b4_define_flag_if([pull]) m4_define([b4_pull_flag], [[1]])
+-b4_define_flag_if([push]) m4_define([b4_push_flag], [[1]])
+-m4_case(b4_percent_define_get([[api.push-pull]]),
+-        [pull], [m4_define([b4_push_flag], [[0]])],
+-        [push], [m4_define([b4_pull_flag], [[0]])])
+-
+-# Handle BISON_USE_PUSH_FOR_PULL for the test suite.  So that push parsing
+-# tests function as written, do not let BISON_USE_PUSH_FOR_PULL modify the
+-# behavior of Bison at all when push parsing is already requested.
+-b4_define_flag_if([use_push_for_pull])
+-b4_use_push_for_pull_if([
+-  b4_push_if([m4_define([b4_use_push_for_pull_flag], [[0]])],
+-             [m4_define([b4_push_flag], [[1]])])])
+-
+-# Check the value of %define parse.lac and friends, where LAC stands for
+-# lookahead correction.
+-b4_percent_define_default([[parse.lac]], [[none]])
+-b4_percent_define_default([[parse.lac.es-capacity-initial]], [[20]])
+-b4_percent_define_default([[parse.lac.memory-trace]], [[failures]])
+-b4_percent_define_check_values([[[[parse.lac]], [[full]], [[none]]]],
+-                               [[[[parse.lac.memory-trace]],
+-                                 [[failures]], [[full]]]])
+-b4_define_flag_if([lac])
+-m4_define([b4_lac_flag],
+-          [m4_if(b4_percent_define_get([[parse.lac]]),
+-                 [none], [[0]], [[1]])])
+-
+-m4_include(b4_skeletonsdir/[c.m4])
+-
+-## ---------------- ##
+-## Default values.  ##
+-## ---------------- ##
+-
+-# Stack parameters.
+-m4_define_default([b4_stack_depth_max], [10000])
+-m4_define_default([b4_stack_depth_init],  [200])
+-
+-
+-## ------------------------ ##
+-## Pure/impure interfaces.  ##
+-## ------------------------ ##
+-
+-b4_percent_define_default([[api.pure]], [[false]])
+-b4_percent_define_check_values([[[[api.pure]],
+-                                 [[false]], [[true]], [[]], [[full]]]])
+-
+-m4_define([b4_pure_flag], [[0]])
+-m4_case(b4_percent_define_get([[api.pure]]),
+-        [false], [m4_define([b4_pure_flag], [[0]])],
+-        [true],  [m4_define([b4_pure_flag], [[1]])],
+-        [],      [m4_define([b4_pure_flag], [[1]])],
+-        [full],  [m4_define([b4_pure_flag], [[2]])])
+-
+-m4_define([b4_pure_if],
+-[m4_case(b4_pure_flag,
+-         [0], [$2],
+-         [1], [$1],
+-         [2], [$1])])
+-         [m4_fatal([invalid api.pure value: ]$1)])])
+-
+-# b4_yyerror_arg_loc_if(ARG)
+-# --------------------------
+-# Expand ARG iff yyerror is to be given a location as argument.
+-m4_define([b4_yyerror_arg_loc_if],
+-[b4_locations_if([m4_case(b4_pure_flag,
+-                          [1], [m4_ifset([b4_parse_param], [$1])],
+-                          [2], [$1])])])
+-
+-# b4_yyerror_args
+-# ---------------
+-# Arguments passed to yyerror: user args plus yylloc.
+-m4_define([b4_yyerror_args],
+-[b4_yyerror_arg_loc_if([&yylloc, ])dnl
+-m4_ifset([b4_parse_param], [b4_args(b4_parse_param), ])])
+-
+-
+-
+-## ------------ ##
+-## Data Types.  ##
+-## ------------ ##
+-
+-# b4_int_type(MIN, MAX)
+-# ---------------------
+-# Return the smallest int type able to handle numbers ranging from
+-# MIN to MAX (included).  Overwrite the version from c.m4, which
+-# uses only C89 types, so that the user can override the shorter
+-# types, and so that pre-C89 compilers are handled correctly.
+-m4_define([b4_int_type],
+-[m4_if(b4_ints_in($@,      [0],   [255]), [1], [yytype_uint8],
+-       b4_ints_in($@,   [-128],   [127]), [1], [yytype_int8],
+-
+-       b4_ints_in($@,      [0], [65535]), [1], [yytype_uint16],
+-       b4_ints_in($@, [-32768], [32767]), [1], [yytype_int16],
+-
+-       m4_eval([0 <= $1]),                [1], [unsigned],
+-
+-                                               [int])])
+-
+-
+-## ----------------- ##
+-## Semantic Values.  ##
+-## ----------------- ##
+-
+-
+-# b4_lhs_value(SYMBOL-NUM, [TYPE])
+-# --------------------------------
+-# See README.
+-m4_define([b4_lhs_value],
+-[b4_symbol_value(yyval, [$1], [$2])])
+-
+-
+-# b4_rhs_value(RULE-LENGTH, POS, [SYMBOL-NUM], [TYPE])
+-# ----------------------------------------------------
+-# See README.
+-m4_define([b4_rhs_value],
+-[b4_symbol_value([yyvsp@{b4_subtract([$2], [$1])@}], [$3], [$4])])
+-
+-
+-## ----------- ##
+-## Locations.  ##
+-## ----------- ##
+-
+-# b4_lhs_location()
+-# -----------------
+-# Expansion of @$.
+-m4_define([b4_lhs_location],
+-[(yyloc)])
+-
+-
+-# b4_rhs_location(RULE-LENGTH, POS)
+-# ---------------------------------
+-# Expansion of @POS, where the current rule has RULE-LENGTH symbols
+-# on RHS.
+-m4_define([b4_rhs_location],
+-[(yylsp@{b4_subtract([$2], [$1])@})])
+-
+-
+-## -------------- ##
+-## Declarations.  ##
+-## -------------- ##
+-
+-# b4_declare_scanner_communication_variables
+-# ------------------------------------------
+-# Declare the variables that are global, or local to YYPARSE if
+-# pure-parser.
+-m4_define([b4_declare_scanner_communication_variables], [[
+-/* The lookahead symbol.  */
+-int yychar;
+-
+-]b4_pure_if([[
+-/* The semantic value of the lookahead symbol.  */
+-/* Default value used for initialization, for pacifying older GCCs
+-   or non-GCC compilers.  */
+-YY_INITIAL_VALUE (static YYSTYPE yyval_default;)
+-YYSTYPE yylval YY_INITIAL_VALUE (= yyval_default);]b4_locations_if([[
+-
+-/* Location data for the lookahead symbol.  */
+-static YYLTYPE yyloc_default]b4_yyloc_default[;
+-YYLTYPE yylloc = yyloc_default;]])],
+-[[/* The semantic value of the lookahead symbol.  */
+-YYSTYPE yylval;]b4_locations_if([[
+-/* Location data for the lookahead symbol.  */
+-YYLTYPE yylloc]b4_yyloc_default[;]])[
+-/* Number of syntax errors so far.  */
+-int yynerrs;]])])
+-
+-
+-# b4_declare_parser_state_variables
+-# ---------------------------------
+-# Declare all the variables that are needed to maintain the parser state
+-# between calls to yypush_parse.
+-m4_define([b4_declare_parser_state_variables], [b4_pure_if([[
+-    /* Number of syntax errors so far.  */
+-    int yynerrs;
+-]])[
+-    int yystate;
+-    /* Number of tokens to shift before error messages enabled.  */
+-    int yyerrstatus;
+-
+-    /* The stacks and their tools:
+-       'yyss': related to states.
+-       'yyvs': related to semantic values.]b4_locations_if([[
+-       'yyls': related to locations.]])[
+-
+-       Refer to the stacks through separate pointers, to allow yyoverflow
+-       to reallocate them elsewhere.  */
+-
+-    /* The state stack.  */
+-    yytype_int16 yyssa[YYINITDEPTH];
+-    yytype_int16 *yyss;
+-    yytype_int16 *yyssp;
+-
+-    /* The semantic value stack.  */
+-    YYSTYPE yyvsa[YYINITDEPTH];
+-    YYSTYPE *yyvs;
+-    YYSTYPE *yyvsp;]b4_locations_if([[
+-
+-    /* The location stack.  */
+-    YYLTYPE yylsa[YYINITDEPTH];
+-    YYLTYPE *yyls;
+-    YYLTYPE *yylsp;
+-
+-    /* The locations where the error started and ended.  */
+-    YYLTYPE yyerror_range[3];]])[
+-
+-    YYSIZE_T yystacksize;]b4_lac_if([[
+-
+-    yytype_int16 yyesa@{]b4_percent_define_get([[parse.lac.es-capacity-initial]])[@};
+-    yytype_int16 *yyes;
+-    YYSIZE_T yyes_capacity;]])])
+-
+-
+-# _b4_declare_yyparse_push
+-# ------------------------
+-# Declaration of yyparse (and dependencies) when using the push parser
+-# (including in pull mode).
+-m4_define([_b4_declare_yyparse_push],
+-[[#ifndef YYPUSH_MORE_DEFINED
+-# define YYPUSH_MORE_DEFINED
+-enum { YYPUSH_MORE = 4 };
+-#endif
+-
+-typedef struct ]b4_prefix[pstate ]b4_prefix[pstate;
+-
+-]b4_pull_if([b4_function_declare([b4_prefix[parse]], [[int]], b4_parse_param)
+-])b4_function_declare([b4_prefix[push_parse]], [[int]],
+-  [[b4_prefix[pstate *ps]], [[ps]]]b4_pure_if([,
+-  [[[int pushed_char]], [[pushed_char]]],
+-  [[b4_api_PREFIX[STYPE const *pushed_val]], [[pushed_val]]]b4_locations_if([,
+-  [[b4_api_PREFIX[LTYPE *pushed_loc]], [[pushed_loc]]]])])m4_ifset([b4_parse_param], [,
+-  b4_parse_param]))
+-b4_pull_if([b4_function_declare([b4_prefix[pull_parse]], [[int]],
+-  [[b4_prefix[pstate *ps]], [[ps]]]m4_ifset([b4_parse_param], [,
+-  b4_parse_param]))])
+-b4_function_declare([b4_prefix[pstate_new]], [b4_prefix[pstate *]],
+-                    [[[void]], []])
+-b4_function_declare([b4_prefix[pstate_delete]], [[void]],
+-                   [[b4_prefix[pstate *ps]], [[ps]]])dnl
+-])
+-
+-# _b4_declare_yyparse
+-# -------------------
+-# When not the push parser.
+-m4_define([_b4_declare_yyparse],
+-[b4_function_declare(b4_prefix[parse], [int], b4_parse_param)])
+-
+-
+-# b4_declare_yyparse
+-# ------------------
+-m4_define([b4_declare_yyparse],
+-[b4_push_if([_b4_declare_yyparse_push],
+-            [_b4_declare_yyparse])[]dnl
+-])
+-
+-
+-# b4_shared_declarations
+-# ----------------------
+-# Declaration that might either go into the header (if --defines)
+-# or open coded in the parser body.
+-m4_define([b4_shared_declarations],
+-[b4_cpp_guard_open([b4_spec_defines_file])[
+-]b4_declare_yydebug[
+-]b4_percent_code_get([[requires]])[
+-]b4_token_enums_defines[
+-]b4_declare_yylstype[
+-]b4_declare_yyparse[
+-]b4_percent_code_get([[provides]])[
+-]b4_cpp_guard_close([b4_spec_defines_file])[]dnl
+-])
+-
+-## -------------- ##
+-## Output files.  ##
+-## -------------- ##
+-
+-b4_output_begin([b4_parser_file_name])[
+-]b4_copyright([Bison implementation for Yacc-like parsers in C])[
+-/* C LALR(1) parser skeleton written by Richard Stallman, by
+-   simplifying the original so-called "semantic" parser.  */
+-
+-/* All symbols defined below should begin with yy or YY, to avoid
+-   infringing on user name space.  This should be done even for local
+-   variables, as they might otherwise be expanded by user macros.
+-   There are some unavoidable exceptions within include files to
+-   define necessary library symbols; they are noted "INFRINGES ON
+-   USER NAME SPACE" below.  */
+-
+-]b4_disclaimer[
+-]b4_identification[
+-]b4_percent_code_get([[top]])[]dnl
+-m4_if(b4_api_prefix, [yy], [],
+-[[/* Substitute the type names.  */
+-#define YYSTYPE         ]b4_api_PREFIX[STYPE]b4_locations_if([[
+-#define YYLTYPE         ]b4_api_PREFIX[LTYPE]])])[
+-]m4_if(b4_prefix, [yy], [],
+-[[/* Substitute the variable and function names.  */]b4_pull_if([[
+-#define yyparse         ]b4_prefix[parse]])b4_push_if([[
+-#define yypush_parse    ]b4_prefix[push_parse]b4_pull_if([[
+-#define yypull_parse    ]b4_prefix[pull_parse]])[
+-#define yypstate_new    ]b4_prefix[pstate_new
+-#define yypstate_delete ]b4_prefix[pstate_delete
+-#define yypstate        ]b4_prefix[pstate]])[
+-#define yylex           ]b4_prefix[lex
+-#define yyerror         ]b4_prefix[error
+-#define yydebug         ]b4_prefix[debug
+-#define yynerrs         ]b4_prefix[nerrs
+-]]b4_pure_if([], [[
+-#define yylval          ]b4_prefix[lval
+-#define yychar          ]b4_prefix[char]b4_locations_if([[
+-#define yylloc          ]b4_prefix[lloc]])]))[
+-
+-]b4_user_pre_prologue[
+-]b4_null_define[
+-
+-/* Enabling verbose error messages.  */
+-#ifdef YYERROR_VERBOSE
+-# undef YYERROR_VERBOSE
+-# define YYERROR_VERBOSE 1
+-#else
+-# define YYERROR_VERBOSE ]b4_error_verbose_if([1], [0])[
+-#endif
+-
+-]m4_ifval(m4_quote(b4_spec_defines_file),
+-[[/* In a future release of Bison, this section will be replaced
+-   by #include "@basename(]b4_spec_defines_file[@)".  */
+-]])dnl
+-b4_shared_declarations[
+-
+-]b4_user_post_prologue[
+-]b4_percent_code_get[]dnl
+-
+-[#ifdef short
+-# undef short
+-#endif
+-
+-#ifdef YYTYPE_UINT8
+-typedef YYTYPE_UINT8 yytype_uint8;
+-#else
+-typedef unsigned char yytype_uint8;
+-#endif
+-
+-#ifdef YYTYPE_INT8
+-typedef YYTYPE_INT8 yytype_int8;
+-#else
+-typedef signed char yytype_int8;
+-#endif
+-
+-#ifdef YYTYPE_UINT16
+-typedef YYTYPE_UINT16 yytype_uint16;
+-#else
+-typedef unsigned short yytype_uint16;
+-#endif
+-
+-#ifdef YYTYPE_INT16
+-typedef YYTYPE_INT16 yytype_int16;
+-#else
+-typedef short yytype_int16;
+-#endif
+-
+-#ifndef YYSIZE_T
+-# ifdef __SIZE_TYPE__
+-#  define YYSIZE_T __SIZE_TYPE__
+-# elif defined size_t
+-#  define YYSIZE_T size_t
+-# elif ! defined YYSIZE_T
+-#  include <stddef.h> /* INFRINGES ON USER NAME SPACE */
+-#  define YYSIZE_T size_t
+-# else
+-#  define YYSIZE_T unsigned
+-# endif
+-#endif
+-
+-#define YYSIZE_MAXIMUM ((YYSIZE_T) -1)
+-
+-#ifndef YY_
+-# if defined YYENABLE_NLS && YYENABLE_NLS
+-#  if ENABLE_NLS
+-#   include <libintl.h> /* INFRINGES ON USER NAME SPACE */
+-#   define YY_(Msgid) dgettext ("bison-runtime", Msgid)
+-#  endif
+-# endif
+-# ifndef YY_
+-#  define YY_(Msgid) Msgid
+-# endif
+-#endif
+-
+-]b4_attribute_define[
+-
+-#if ]b4_lac_if([[1]], [[! defined yyoverflow || YYERROR_VERBOSE]])[
+-
+-/* The parser invokes alloca or malloc; define the necessary symbols.  */]dnl
+-b4_push_if([], [b4_lac_if([], [[
+-
+-# ifdef YYSTACK_USE_ALLOCA
+-#  if YYSTACK_USE_ALLOCA
+-#   ifdef __GNUC__
+-#    define YYSTACK_ALLOC __builtin_alloca
+-#   elif defined __BUILTIN_VA_ARG_INCR
+-#    include <alloca.h> /* INFRINGES ON USER NAME SPACE */
+-#   elif defined _AIX
+-#    define YYSTACK_ALLOC __alloca
+-#   elif defined _MSC_VER
+-#    include <malloc.h> /* INFRINGES ON USER NAME SPACE */
+-#    define alloca _alloca
+-#   else
+-#    define YYSTACK_ALLOC alloca
+-#    if ! defined _ALLOCA_H && ! defined EXIT_SUCCESS
+-#     include <stdlib.h> /* INFRINGES ON USER NAME SPACE */
+-      /* Use EXIT_SUCCESS as a witness for stdlib.h.  */
+-#     ifndef EXIT_SUCCESS
+-#      define EXIT_SUCCESS 0
+-#     endif
+-#    endif
+-#   endif
+-#  endif
+-# endif]])])[
+-
+-# ifdef YYSTACK_ALLOC
+-   /* Pacify GCC's 'empty if-body' warning.  */
+-#  define YYSTACK_FREE(Ptr) do { /* empty */; } while (0)
+-#  ifndef YYSTACK_ALLOC_MAXIMUM
+-    /* The OS might guarantee only one guard page at the bottom of the stack,
+-       and a page size can be as small as 4096 bytes.  So we cannot safely
+-       invoke alloca (N) if N exceeds 4096.  Use a slightly smaller number
+-       to allow for a few compiler-allocated temporary stack slots.  */
+-#   define YYSTACK_ALLOC_MAXIMUM 4032 /* reasonable circa 2006 */
+-#  endif
+-# else
+-#  define YYSTACK_ALLOC YYMALLOC
+-#  define YYSTACK_FREE YYFREE
+-#  ifndef YYSTACK_ALLOC_MAXIMUM
+-#   define YYSTACK_ALLOC_MAXIMUM YYSIZE_MAXIMUM
+-#  endif
+-#  if (defined __cplusplus && ! defined EXIT_SUCCESS \
+-       && ! ((defined YYMALLOC || defined malloc) \
+-             && (defined YYFREE || defined free)))
+-#   include <stdlib.h> /* INFRINGES ON USER NAME SPACE */
+-#   ifndef EXIT_SUCCESS
+-#    define EXIT_SUCCESS 0
+-#   endif
+-#  endif
+-#  ifndef YYMALLOC
+-#   define YYMALLOC malloc
+-#   if ! defined malloc && ! defined EXIT_SUCCESS
+-void *malloc (YYSIZE_T); /* INFRINGES ON USER NAME SPACE */
+-#   endif
+-#  endif
+-#  ifndef YYFREE
+-#   define YYFREE free
+-#   if ! defined free && ! defined EXIT_SUCCESS
+-void free (void *); /* INFRINGES ON USER NAME SPACE */
+-#   endif
+-#  endif
+-# endif]b4_lac_if([[
+-# define YYCOPY_NEEDED 1]])[
+-#endif]b4_lac_if([], [[ /* ! defined yyoverflow || YYERROR_VERBOSE */]])[
+-
+-
+-#if (! defined yyoverflow \
+-     && (! defined __cplusplus \
+-         || (]b4_locations_if([[defined ]b4_api_PREFIX[LTYPE_IS_TRIVIAL && ]b4_api_PREFIX[LTYPE_IS_TRIVIAL \
+-             && ]])[defined ]b4_api_PREFIX[STYPE_IS_TRIVIAL && ]b4_api_PREFIX[STYPE_IS_TRIVIAL)))
+-
+-/* A type that is properly aligned for any stack member.  */
+-union yyalloc
+-{
+-  yytype_int16 yyss_alloc;
+-  YYSTYPE yyvs_alloc;]b4_locations_if([
+-  YYLTYPE yyls_alloc;])[
+-};
+-
+-/* The size of the maximum gap between one aligned stack and the next.  */
+-# define YYSTACK_GAP_MAXIMUM (sizeof (union yyalloc) - 1)
+-
+-/* The size of an array large to enough to hold all stacks, each with
+-   N elements.  */
+-]b4_locations_if(
+-[# define YYSTACK_BYTES(N) \
+-     ((N) * (sizeof (yytype_int16) + sizeof (YYSTYPE) + sizeof (YYLTYPE)) \
+-      + 2 * YYSTACK_GAP_MAXIMUM)],
+-[# define YYSTACK_BYTES(N) \
+-     ((N) * (sizeof (yytype_int16) + sizeof (YYSTYPE)) \
+-      + YYSTACK_GAP_MAXIMUM)])[
+-
+-# define YYCOPY_NEEDED 1
+-
+-/* Relocate STACK from its old location to the new one.  The
+-   local variables YYSIZE and YYSTACKSIZE give the old and new number of
+-   elements in the stack, and YYPTR gives the new location of the
+-   stack.  Advance YYPTR to a properly aligned location for the next
+-   stack.  */
+-# define YYSTACK_RELOCATE(Stack_alloc, Stack)                           \
+-    do                                                                  \
+-      {                                                                 \
+-        YYSIZE_T yynewbytes;                                            \
+-        YYCOPY (&yyptr->Stack_alloc, Stack, yysize);                    \
+-        Stack = &yyptr->Stack_alloc;                                    \
+-        yynewbytes = yystacksize * sizeof (*Stack) + YYSTACK_GAP_MAXIMUM; \
+-        yyptr += yynewbytes / sizeof (*yyptr);                          \
+-      }                                                                 \
+-    while (0)
+-
+-#endif
+-
+-#if defined YYCOPY_NEEDED && YYCOPY_NEEDED
+-/* Copy COUNT objects from SRC to DST.  The source and destination do
+-   not overlap.  */
+-# ifndef YYCOPY
+-#  if defined __GNUC__ && 1 < __GNUC__
+-#   define YYCOPY(Dst, Src, Count) \
+-      __builtin_memcpy (Dst, Src, (Count) * sizeof (*(Src)))
+-#  else
+-#   define YYCOPY(Dst, Src, Count)              \
+-      do                                        \
+-        {                                       \
+-          YYSIZE_T yyi;                         \
+-          for (yyi = 0; yyi < (Count); yyi++)   \
+-            (Dst)[yyi] = (Src)[yyi];            \
+-        }                                       \
+-      while (0)
+-#  endif
+-# endif
+-#endif /* !YYCOPY_NEEDED */
+-
+-/* YYFINAL -- State number of the termination state.  */
+-#define YYFINAL  ]b4_final_state_number[
+-/* YYLAST -- Last index in YYTABLE.  */
+-#define YYLAST   ]b4_last[
+-
+-/* YYNTOKENS -- Number of terminals.  */
+-#define YYNTOKENS  ]b4_tokens_number[
+-/* YYNNTS -- Number of nonterminals.  */
+-#define YYNNTS  ]b4_nterms_number[
+-/* YYNRULES -- Number of rules.  */
+-#define YYNRULES  ]b4_rules_number[
+-/* YYNSTATES -- Number of states.  */
+-#define YYNSTATES  ]b4_states_number[
+-
+-#define YYUNDEFTOK  ]b4_undef_token_number[
+-#define YYMAXUTOK   ]b4_user_token_number_max[
+-
+-/* YYTRANSLATE(TOKEN-NUM) -- Symbol number corresponding to TOKEN-NUM
+-   as returned by yylex, with out-of-bounds checking.  */
+-#define YYTRANSLATE(YYX)                                                \
+-  ((unsigned) (YYX) <= YYMAXUTOK ? yytranslate[YYX] : YYUNDEFTOK)
+-
+-/* YYTRANSLATE[TOKEN-NUM] -- Symbol number corresponding to TOKEN-NUM
+-   as returned by yylex.  */
+-static const ]b4_int_type_for([b4_translate])[ yytranslate[] =
+-{
+-  ]b4_translate[
+-};
+-
+-#if ]b4_api_PREFIX[DEBUG
+-]b4_integral_parser_table_define([rline], [b4_rline],
+-     [[YYRLINE[YYN] -- Source line where rule number YYN was defined.]])[
+-#endif
+-
+-#if ]b4_api_PREFIX[DEBUG || YYERROR_VERBOSE || ]b4_token_table_flag[
+-/* YYTNAME[SYMBOL-NUM] -- String name of the symbol SYMBOL-NUM.
+-   First, the terminals, then, starting at YYNTOKENS, nonterminals.  */
+-static const char *const yytname[] =
+-{
+-  ]b4_tname[
+-};
+-#endif
+-
+-# ifdef YYPRINT
+-/* YYTOKNUM[NUM] -- (External) token number corresponding to the
+-   (internal) symbol number NUM (which must be that of a token).  */
+-static const ]b4_int_type_for([b4_toknum])[ yytoknum[] =
+-{
+-  ]b4_toknum[
+-};
+-# endif
+-
+-#define YYPACT_NINF ]b4_pact_ninf[
+-
+-#define yypact_value_is_default(Yystate) \
+-  ]b4_table_value_equals([[pact]], [[Yystate]], [b4_pact_ninf])[
+-
+-#define YYTABLE_NINF ]b4_table_ninf[
+-
+-#define yytable_value_is_error(Yytable_value) \
+-  ]b4_table_value_equals([[table]], [[Yytable_value]], [b4_table_ninf])[
+-
+-]b4_parser_tables_define[
+-
+-#define yyerrok         (yyerrstatus = 0)
+-#define yyclearin       (yychar = YYEMPTY)
+-#define YYEMPTY         (-2)
+-#define YYEOF           0
+-
+-#define YYACCEPT        goto yyacceptlab
+-#define YYABORT         goto yyabortlab
+-#define YYERROR         goto yyerrorlab
+-
+-
+-#define YYRECOVERING()  (!!yyerrstatus)
+-
+-#define YYBACKUP(Token, Value)                                    \
+-  do                                                              \
+-    if (yychar == YYEMPTY)                                        \
+-      {                                                           \
+-        yychar = (Token);                                         \
+-        yylval = (Value);                                         \
+-        YYPOPSTACK (yylen);                                       \
+-        yystate = *yyssp;                                         \]b4_lac_if([[
+-        YY_LAC_DISCARD ("YYBACKUP");                              \]])[
+-        goto yybackup;                                            \
+-      }                                                           \
+-    else                                                          \
+-      {                                                           \
+-        yyerror (]b4_yyerror_args[YY_("syntax error: cannot back up")); \
+-        YYERROR;                                                  \
+-      }                                                           \
+-  while (0)
+-
+-/* Error token number */
+-#define YYTERROR        1
+-#define YYERRCODE       256
+-
+-]b4_locations_if([[
+-]b4_yylloc_default_define[
+-#define YYRHSLOC(Rhs, K) ((Rhs)[K])
+-]])[
+-
+-/* Enable debugging if requested.  */
+-#if ]b4_api_PREFIX[DEBUG
+-
+-# ifndef YYFPRINTF
+-#  include <stdio.h> /* INFRINGES ON USER NAME SPACE */
+-#  define YYFPRINTF fprintf
+-# endif
+-
+-# define YYDPRINTF(Args)                        \
+-do {                                            \
+-  if (yydebug)                                  \
+-    YYFPRINTF Args;                             \
+-} while (0)
+-
+-]b4_yy_location_print_define[
+-
+-# define YY_SYMBOL_PRINT(Title, Type, Value, Location)                    \
+-do {                                                                      \
+-  if (yydebug)                                                            \
+-    {                                                                     \
+-      YYFPRINTF (stderr, "%s ", Title);                                   \
+-      yy_symbol_print (stderr,                                            \
+-                  Type, Value]b4_locations_if([, Location])[]b4_user_args[); \
+-      YYFPRINTF (stderr, "\n");                                           \
+-    }                                                                     \
+-} while (0)
+-
+-]b4_yy_symbol_print_define[
+-
+-/*------------------------------------------------------------------.
+-| yy_stack_print -- Print the state stack from its BOTTOM up to its |
+-| TOP (included).                                                   |
+-`------------------------------------------------------------------*/
+-
+-]b4_function_define([yy_stack_print], [static void],
+-                   [[yytype_int16 *yybottom], [yybottom]],
+-                   [[yytype_int16 *yytop],    [yytop]])[
+-{
+-  YYFPRINTF (stderr, "Stack now");
+-  for (; yybottom <= yytop; yybottom++)
+-    {
+-      int yybot = *yybottom;
+-      YYFPRINTF (stderr, " %d", yybot);
+-    }
+-  YYFPRINTF (stderr, "\n");
+-}
+-
+-# define YY_STACK_PRINT(Bottom, Top)                            \
+-do {                                                            \
+-  if (yydebug)                                                  \
+-    yy_stack_print ((Bottom), (Top));                           \
+-} while (0)
+-
+-
+-/*------------------------------------------------.
+-| Report that the YYRULE is going to be reduced.  |
+-`------------------------------------------------*/
+-
+-]b4_function_define([yy_reduce_print], [static void],
+-                   [[yytype_int16 *yyssp], [yyssp]],
+-                   [[YYSTYPE *yyvsp], [yyvsp]],
+-    b4_locations_if([[[YYLTYPE *yylsp], [yylsp]],
+-                   ])[[int yyrule], [yyrule]]m4_ifset([b4_parse_param], [,
+-                   b4_parse_param]))[
+-{
+-  unsigned long yylno = yyrline[yyrule];
+-  int yynrhs = yyr2[yyrule];
+-  int yyi;
+-  YYFPRINTF (stderr, "Reducing stack by rule %d (line %lu):\n",
+-             yyrule - 1, yylno);
+-  /* The symbols being reduced.  */
+-  for (yyi = 0; yyi < yynrhs; yyi++)
+-    {
+-      YYFPRINTF (stderr, "   $%d = ", yyi + 1);
+-      yy_symbol_print (stderr,
+-                       yystos[yyssp[yyi + 1 - yynrhs]],
+-                       &]b4_rhs_value(yynrhs, yyi + 1)[
+-                       ]b4_locations_if([, &]b4_rhs_location(yynrhs, yyi + 1))[]dnl
+-                       b4_user_args[);
+-      YYFPRINTF (stderr, "\n");
+-    }
+-}
+-
+-# define YY_REDUCE_PRINT(Rule)          \
+-do {                                    \
+-  if (yydebug)                          \
+-    yy_reduce_print (yyssp, yyvsp, ]b4_locations_if([yylsp, ])[Rule]b4_user_args[); \
+-} while (0)
+-
+-/* Nonzero means print parse trace.  It is left uninitialized so that
+-   multiple parsers can coexist.  */
+-int yydebug;
+-#else /* !]b4_api_PREFIX[DEBUG */
+-# define YYDPRINTF(Args)
+-# define YY_SYMBOL_PRINT(Title, Type, Value, Location)
+-# define YY_STACK_PRINT(Bottom, Top)
+-# define YY_REDUCE_PRINT(Rule)
+-#endif /* !]b4_api_PREFIX[DEBUG */
+-
+-
+-/* YYINITDEPTH -- initial size of the parser's stacks.  */
+-#ifndef YYINITDEPTH
+-# define YYINITDEPTH ]b4_stack_depth_init[
+-#endif
+-
+-/* YYMAXDEPTH -- maximum size the stacks can grow to (effective only
+-   if the built-in stack extension method is used).
+-
+-   Do not make this value too large; the results are undefined if
+-   YYSTACK_ALLOC_MAXIMUM < YYSTACK_BYTES (YYMAXDEPTH)
+-   evaluated with infinite-precision integer arithmetic.  */
+-
+-#ifndef YYMAXDEPTH
+-# define YYMAXDEPTH ]b4_stack_depth_max[
+-#endif]b4_lac_if([[
+-
+-/* Given a state stack such that *YYBOTTOM is its bottom, such that
+-   *YYTOP is either its top or is YYTOP_EMPTY to indicate an empty
+-   stack, and such that *YYCAPACITY is the maximum number of elements it
+-   can hold without a reallocation, make sure there is enough room to
+-   store YYADD more elements.  If not, allocate a new stack using
+-   YYSTACK_ALLOC, copy the existing elements, and adjust *YYBOTTOM,
+-   *YYTOP, and *YYCAPACITY to reflect the new capacity and memory
+-   location.  If *YYBOTTOM != YYBOTTOM_NO_FREE, then free the old stack
+-   using YYSTACK_FREE.  Return 0 if successful or if no reallocation is
+-   required.  Return 1 if memory is exhausted.  */
+-static int
+-yy_lac_stack_realloc (YYSIZE_T *yycapacity, YYSIZE_T yyadd,
+-#if ]b4_api_PREFIX[DEBUG
+-                      char const *yydebug_prefix,
+-                      char const *yydebug_suffix,
+-#endif
+-                      yytype_int16 **yybottom,
+-                      yytype_int16 *yybottom_no_free,
+-                      yytype_int16 **yytop, yytype_int16 *yytop_empty)
+-{
+-  YYSIZE_T yysize_old =
+-    (YYSIZE_T) (*yytop == yytop_empty ? 0 : *yytop - *yybottom + 1);
+-  YYSIZE_T yysize_new = yysize_old + yyadd;
+-  if (*yycapacity < yysize_new)
+-    {
+-      YYSIZE_T yyalloc = 2 * yysize_new;
+-      yytype_int16 *yybottom_new;
+-      /* Use YYMAXDEPTH for maximum stack size given that the stack
+-         should never need to grow larger than the main state stack
+-         needs to grow without LAC.  */
+-      if (YYMAXDEPTH < yysize_new)
+-        {
+-          YYDPRINTF ((stderr, "%smax size exceeded%s", yydebug_prefix,
+-                      yydebug_suffix));
+-          return 1;
+-        }
+-      if (YYMAXDEPTH < yyalloc)
+-        yyalloc = YYMAXDEPTH;
+-      yybottom_new =
+-        (yytype_int16*) YYSTACK_ALLOC (yyalloc * sizeof *yybottom_new);
+-      if (!yybottom_new)
+-        {
+-          YYDPRINTF ((stderr, "%srealloc failed%s", yydebug_prefix,
+-                      yydebug_suffix));
+-          return 1;
+-        }
+-      if (*yytop != yytop_empty)
+-        {
+-          YYCOPY (yybottom_new, *yybottom, yysize_old);
+-          *yytop = yybottom_new + (yysize_old - 1);
+-        }
+-      if (*yybottom != yybottom_no_free)
+-        YYSTACK_FREE (*yybottom);
+-      *yybottom = yybottom_new;
+-      *yycapacity = yyalloc;]m4_if(b4_percent_define_get([[parse.lac.memory-trace]]),
+-                                   [full], [[
+-      YYDPRINTF ((stderr, "%srealloc to %lu%s", yydebug_prefix,
+-                  (unsigned long) yyalloc, yydebug_suffix));]])[
+-    }
+-  return 0;
+-}
+-
+-/* Establish the initial context for the current lookahead if no initial
+-   context is currently established.
+-
+-   We define a context as a snapshot of the parser stacks.  We define
+-   the initial context for a lookahead as the context in which the
+-   parser initially examines that lookahead in order to select a
+-   syntactic action.  Thus, if the lookahead eventually proves
+-   syntactically unacceptable (possibly in a later context reached via a
+-   series of reductions), the initial context can be used to determine
+-   the exact set of tokens that would be syntactically acceptable in the
+-   lookahead's place.  Moreover, it is the context after which any
+-   further semantic actions would be erroneous because they would be
+-   determined by a syntactically unacceptable token.
+-
+-   YY_LAC_ESTABLISH should be invoked when a reduction is about to be
+-   performed in an inconsistent state (which, for the purposes of LAC,
+-   includes consistent states that don't know they're consistent because
+-   their default reductions have been disabled).  Iff there is a
+-   lookahead token, it should also be invoked before reporting a syntax
+-   error.  This latter case is for the sake of the debugging output.
+-
+-   For parse.lac=full, the implementation of YY_LAC_ESTABLISH is as
+-   follows.  If no initial context is currently established for the
+-   current lookahead, then check if that lookahead can eventually be
+-   shifted if syntactic actions continue from the current context.
+-   Report a syntax error if it cannot.  */
+-#define YY_LAC_ESTABLISH                                         \
+-do {                                                             \
+-  if (!yy_lac_established)                                       \
+-    {                                                            \
+-      YYDPRINTF ((stderr,                                        \
+-                  "LAC: initial context established for %s\n",   \
+-                  yytname[yytoken]));                            \
+-      yy_lac_established = 1;                                    \
+-      {                                                          \
+-        int yy_lac_status =                                      \
+-          yy_lac (yyesa, &yyes, &yyes_capacity, yyssp, yytoken); \
+-        if (yy_lac_status == 2)                                  \
+-          goto yyexhaustedlab;                                   \
+-        if (yy_lac_status == 1)                                  \
+-          goto yyerrlab;                                         \
+-      }                                                          \
+-    }                                                            \
+-} while (0)
+-
+-/* Discard any previous initial lookahead context because of Event,
+-   which may be a lookahead change or an invalidation of the currently
+-   established initial context for the current lookahead.
+-
+-   The most common example of a lookahead change is a shift.  An example
+-   of both cases is syntax error recovery.  That is, a syntax error
+-   occurs when the lookahead is syntactically erroneous for the
+-   currently established initial context, so error recovery manipulates
+-   the parser stacks to try to find a new initial context in which the
+-   current lookahead is syntactically acceptable.  If it fails to find
+-   such a context, it discards the lookahead.  */
+-#if ]b4_api_PREFIX[DEBUG
+-# define YY_LAC_DISCARD(Event)                                           \
+-do {                                                                     \
+-  if (yy_lac_established)                                                \
+-    {                                                                    \
+-      if (yydebug)                                                       \
+-        YYFPRINTF (stderr, "LAC: initial context discarded due to "      \
+-                   Event "\n");                                          \
+-      yy_lac_established = 0;                                            \
+-    }                                                                    \
+-} while (0)
+-#else
+-# define YY_LAC_DISCARD(Event) yy_lac_established = 0
+-#endif
+-
+-/* Given the stack whose top is *YYSSP, return 0 iff YYTOKEN can
+-   eventually (after perhaps some reductions) be shifted, return 1 if
+-   not, or return 2 if memory is exhausted.  As preconditions and
+-   postconditions: *YYES_CAPACITY is the allocated size of the array to
+-   which *YYES points, and either *YYES = YYESA or *YYES points to an
+-   array allocated with YYSTACK_ALLOC.  yy_lac may overwrite the
+-   contents of either array, alter *YYES and *YYES_CAPACITY, and free
+-   any old *YYES other than YYESA.  */
+-static int
+-yy_lac (yytype_int16 *yyesa, yytype_int16 **yyes,
+-        YYSIZE_T *yyes_capacity, yytype_int16 *yyssp, int yytoken)
+-{
+-  yytype_int16 *yyes_prev = yyssp;
+-  yytype_int16 *yyesp = yyes_prev;
+-  YYDPRINTF ((stderr, "LAC: checking lookahead %s:", yytname[yytoken]));
+-  if (yytoken == YYUNDEFTOK)
+-    {
+-      YYDPRINTF ((stderr, " Always Err\n"));
+-      return 1;
+-    }
+-  while (1)
+-    {
+-      int yyrule = yypact[*yyesp];
+-      if (yypact_value_is_default (yyrule)
+-          || (yyrule += yytoken) < 0 || YYLAST < yyrule
+-          || yycheck[yyrule] != yytoken)
+-        {
+-          yyrule = yydefact[*yyesp];
+-          if (yyrule == 0)
+-            {
+-              YYDPRINTF ((stderr, " Err\n"));
+-              return 1;
+-            }
+-        }
+-      else
+-        {
+-          yyrule = yytable[yyrule];
+-          if (yytable_value_is_error (yyrule))
+-            {
+-              YYDPRINTF ((stderr, " Err\n"));
+-              return 1;
+-            }
+-          if (0 < yyrule)
+-            {
+-              YYDPRINTF ((stderr, " S%d\n", yyrule));
+-              return 0;
+-            }
+-          yyrule = -yyrule;
+-        }
+-      {
+-        YYSIZE_T yylen = yyr2[yyrule];
+-        YYDPRINTF ((stderr, " R%d", yyrule - 1));
+-        if (yyesp != yyes_prev)
+-          {
+-            YYSIZE_T yysize = (YYSIZE_T) (yyesp - *yyes + 1);
+-            if (yylen < yysize)
+-              {
+-                yyesp -= yylen;
+-                yylen = 0;
+-              }
+-            else
+-              {
+-                yylen -= yysize;
+-                yyesp = yyes_prev;
+-              }
+-          }
+-        if (yylen)
+-          yyesp = yyes_prev -= yylen;
+-      }
+-      {
+-        yytype_int16 yystate;
+-        {
+-          const int yylhs = yyr1[yyrule] - YYNTOKENS;
+-          const int yyi = yypgoto[yylhs] + *yyesp;
+-          yystate = ((yytype_int16)
+-                     (0 <= yyi && yyi <= YYLAST && yycheck[yyi] == *yyesp
+-                      ? yytable[yyi]
+-                      : yydefgoto[yylhs]));
+-        }
+-        if (yyesp == yyes_prev)
+-          {
+-            yyesp = *yyes;
+-            *yyesp = yystate;
+-          }
+-        else
+-          {
+-            if (yy_lac_stack_realloc (yyes_capacity, 1,
+-#if ]b4_api_PREFIX[DEBUG
+-                                      " (", ")",
+-#endif
+-                                      yyes, yyesa, &yyesp, yyes_prev))
+-              {
+-                YYDPRINTF ((stderr, "\n"));
+-                return 2;
+-              }
+-            *++yyesp = yystate;
+-          }
+-        YYDPRINTF ((stderr, " G%d", (int) yystate));
+-      }
+-    }
+-}]])[
+-
+-
+-#if YYERROR_VERBOSE
+-
+-# ifndef yystrlen
+-#  if defined __GLIBC__ && defined _STRING_H
+-#   define yystrlen strlen
+-#  else
+-/* Return the length of YYSTR.  */
+-]b4_function_define([yystrlen], [static YYSIZE_T],
+-   [[const char *yystr], [yystr]])[
+-{
+-  YYSIZE_T yylen;
+-  for (yylen = 0; yystr[yylen]; yylen++)
+-    continue;
+-  return yylen;
+-}
+-#  endif
+-# endif
+-
+-# ifndef yystpcpy
+-#  if defined __GLIBC__ && defined _STRING_H && defined _GNU_SOURCE
+-#   define yystpcpy stpcpy
+-#  else
+-/* Copy YYSRC to YYDEST, returning the address of the terminating '\0' in
+-   YYDEST.  */
+-]b4_function_define([yystpcpy], [static char *],
+-   [[char *yydest], [yydest]], [[const char *yysrc], [yysrc]])[
+-{
+-  char *yyd = yydest;
+-  const char *yys = yysrc;
+-
+-  while ((*yyd++ = *yys++) != '\0')
+-    continue;
+-
+-  return yyd - 1;
+-}
+-#  endif
+-# endif
+-
+-# ifndef yytnamerr
+-/* Copy to YYRES the contents of YYSTR after stripping away unnecessary
+-   quotes and backslashes, so that it's suitable for yyerror.  The
+-   heuristic is that double-quoting is unnecessary unless the string
+-   contains an apostrophe, a comma, or backslash (other than
+-   backslash-backslash).  YYSTR is taken from yytname.  If YYRES is
+-   null, do not copy; instead, return the length of what the result
+-   would have been.  */
+-static YYSIZE_T
+-yytnamerr (char *yyres, const char *yystr)
+-{
+-  if (*yystr == '"')
+-    {
+-      YYSIZE_T yyn = 0;
+-      char const *yyp = yystr;
+-
+-      for (;;)
+-        switch (*++yyp)
+-          {
+-          case '\'':
+-          case ',':
+-            goto do_not_strip_quotes;
+-
+-          case '\\':
+-            if (*++yyp != '\\')
+-              goto do_not_strip_quotes;
+-            else
+-              goto append;
+-
+-          append:
+-          default:
+-            if (yyres)
+-              yyres[yyn] = *yyp;
+-            yyn++;
+-            break;
+-
+-          case '"':
+-            if (yyres)
+-              yyres[yyn] = '\0';
+-            return yyn;
+-          }
+-    do_not_strip_quotes: ;
+-    }
+-
+-  if (! yyres)
+-    return yystrlen (yystr);
+-
+-  return (YYSIZE_T) (yystpcpy (yyres, yystr) - yyres);
+-}
+-# endif
+-
+-/* Copy into *YYMSG, which is of size *YYMSG_ALLOC, an error message
+-   about the unexpected token YYTOKEN for the state stack whose top is
+-   YYSSP.]b4_lac_if([[  In order to see if a particular token T is a
+-   valid looakhead, invoke yy_lac (YYESA, YYES, YYES_CAPACITY, YYSSP, T).]])[
+-
+-   Return 0 if *YYMSG was successfully written.  Return 1 if *YYMSG is
+-   not large enough to hold the message.  In that case, also set
+-   *YYMSG_ALLOC to the required number of bytes.  Return 2 if the
+-   required number of bytes is too large to store]b4_lac_if([[ or if
+-   yy_lac returned 2]])[.  */
+-static int
+-yysyntax_error (YYSIZE_T *yymsg_alloc, char **yymsg,
+-                ]b4_lac_if([[yytype_int16 *yyesa, yytype_int16 **yyes,
+-                YYSIZE_T *yyes_capacity, ]])[yytype_int16 *yyssp, int yytoken)
+-{
+-  YYSIZE_T yysize0 = yytnamerr (YY_NULLPTR, yytname[yytoken]);
+-  YYSIZE_T yysize = yysize0;
+-  enum { YYERROR_VERBOSE_ARGS_MAXIMUM = 5 };
+-  /* Internationalized format string. */
+-  const char *yyformat = YY_NULLPTR;
+-  /* Arguments of yyformat. */
+-  char const *yyarg[YYERROR_VERBOSE_ARGS_MAXIMUM];
+-  /* Number of reported tokens (one for the "unexpected", one per
+-     "expected"). */
+-  int yycount = 0;
+-
+-  /* There are many possibilities here to consider:
+-     - If this state is a consistent state with a default action, then
+-       the only way this function was invoked is if the default action
+-       is an error action.  In that case, don't check for expected
+-       tokens because there are none.
+-     - The only way there can be no lookahead present (in yychar) is if
+-       this state is a consistent state with a default action.  Thus,
+-       detecting the absence of a lookahead is sufficient to determine
+-       that there is no unexpected or expected token to report.  In that
+-       case, just report a simple "syntax error".
+-     - Don't assume there isn't a lookahead just because this state is a
+-       consistent state with a default action.  There might have been a
+-       previous inconsistent state, consistent state with a non-default
+-       action, or user semantic action that manipulated yychar.]b4_lac_if([[
+-       In the first two cases, it might appear that the current syntax
+-       error should have been detected in the previous state when yy_lac
+-       was invoked.  However, at that time, there might have been a
+-       different syntax error that discarded a different initial context
+-       during error recovery, leaving behind the current lookahead.]], [[
+-     - Of course, the expected token list depends on states to have
+-       correct lookahead information, and it depends on the parser not
+-       to perform extra reductions after fetching a lookahead from the
+-       scanner and before detecting a syntax error.  Thus, state merging
+-       (from LALR or IELR) and default reductions corrupt the expected
+-       token list.  However, the list is correct for canonical LR with
+-       one exception: it will still contain any token that will not be
+-       accepted due to an error action in a later state.]])[
+-  */
+-  if (yytoken != YYEMPTY)
+-    {
+-      int yyn = yypact[*yyssp];]b4_lac_if([[
+-      YYDPRINTF ((stderr, "Constructing syntax error message\n"));]])[
+-      yyarg[yycount++] = yytname[yytoken];
+-      if (!yypact_value_is_default (yyn))
+-        {]b4_lac_if([], [[
+-          /* Start YYX at -YYN if negative to avoid negative indexes in
+-             YYCHECK.  In other words, skip the first -YYN actions for
+-             this state because they are default actions.  */
+-          int yyxbegin = yyn < 0 ? -yyn : 0;
+-          /* Stay within bounds of both yycheck and yytname.  */
+-          int yychecklim = YYLAST - yyn + 1;
+-          int yyxend = yychecklim < YYNTOKENS ? yychecklim : YYNTOKENS;]])[
+-          int yyx;]b4_lac_if([[
+-
+-          for (yyx = 0; yyx < YYNTOKENS; ++yyx)
+-            if (yyx != YYTERROR && yyx != YYUNDEFTOK)
+-              {
+-