[Webkit-unassigned] [Bug 168770] New: [GTK] Compilation fails if using ninja together with icecream and cmake > 3.5

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=168770

            Bug ID: 168770
           Summary: [GTK] Compilation fails if using ninja together with
                    icecream and cmake > 3.5
    Classification: Unclassified
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: WebKit Gtk
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: tpopela at redhat.com
                CC: bugs-noreply at webkitgtk.org

Compilation fails if using ninja together with icecream and cmake > 3.5. It's because we turn on the response files support (because of bug 129771) in Source/cmake/OptionsCommon.cmake (by enabling CMAKE_NINJA_FORCE_RESPONSE_FILE), but the icecream compiler it not processing the response files correctly, and it's not passing compiler flags from the response files to the compiler (in our case it's -fPIC). The compilation succeeds with cmake <= 3.5, because the support for the ninja's response files was added in 3.6. For more information see the cmake bug https://gitlab.kitware.com/cmake/cmake/issues/16664 the issue was reported to icecream as well https://github.com/icecc/icecream/issues/188. In the meantime we should turn off the response files support if using cmake > 3.5 together with ninja generator and icecream.

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