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      <base href="https://bugs.webkit.org/" />
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    <body><table border="1" cellspacing="0" cellpadding="8">
        <tr>
          <th>Bug ID</th>
          <td><a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - [CMake] Duplicated IDL files in WebCore_IDL_FILES"
   href="https://bugs.webkit.org/show_bug.cgi?id=161592">161592</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>[CMake] Duplicated IDL files in WebCore_IDL_FILES
          </td>
        </tr>

        <tr>
          <th>Classification</th>
          <td>Unclassified
          </td>
        </tr>

        <tr>
          <th>Product</th>
          <td>WebKit
          </td>
        </tr>

        <tr>
          <th>Version</th>
          <td>WebKit Nightly Build
          </td>
        </tr>

        <tr>
          <th>Hardware</th>
          <td>Unspecified
          </td>
        </tr>

        <tr>
          <th>OS</th>
          <td>Unspecified
          </td>
        </tr>

        <tr>
          <th>Status</th>
          <td>NEW
          </td>
        </tr>

        <tr>
          <th>Severity</th>
          <td>Normal
          </td>
        </tr>

        <tr>
          <th>Priority</th>
          <td>P2
          </td>
        </tr>

        <tr>
          <th>Component</th>
          <td>Tools / Tests
          </td>
        </tr>

        <tr>
          <th>Assignee</th>
          <td>webkit-unassigned&#64;lists.webkit.org
          </td>
        </tr>

        <tr>
          <th>Reporter</th>
          <td>Hironori.Fujii&#64;sony.com
          </td>
        </tr>

        <tr>
          <th>CC</th>
          <td>lforschler&#64;apple.com
          </td>
        </tr></table>
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        <div>
        <pre>[CMake] Duplicated IDL files in WebCore_IDL_FILES

Some IDL files are listed in WebCore_IDL_FILES doubly.

I've found this problem in the experiment of <a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - [CMake] CMake does not support the dep file of preprocess-idls.pl --supplementalMakefileDeps"
   href="show_bug.cgi?id=161433">Bug 161433</a>.
Ninja issues a lot of warnings.

<span class="quote">&gt; ninja: warning: multiple rules generate DerivedSources/WebCore/JSANGLEInstancedArrays.cpp. builds involving this target will not be correct; continuing anyway [-w dupbuild=warn]
&gt; ninja: warning: multiple rules generate DerivedSources/WebCore/JSANGLEInstancedArrays.h. builds involving this target will not be correct; continuing anyway [-w dupbuild=warn]
&gt; ninja: warning: multiple rules generate DerivedSources/WebCore/JSEXTBlendMinMax.cpp. builds involving this target will not be correct; continuing anyway [-w dupbuild=warn]
&gt; ninja: warning: multiple rules generate DerivedSources/WebCore/JSEXTBlendMinMax.h. builds involving this target will not be correct; continuing anyway [-w dupbuild=warn]
&gt; ninja: warning: multiple rules generate DerivedSources/WebCore/JSEXTFragDepth.cpp. builds involving this target will not be correct; continuing anyway [-w dupbuild=warn]
&gt; ninja: warning: multiple rules generate DerivedSources/WebCore/JSEXTFragDepth.h. builds involving this target will not be correct; continuing anyway [-w dupbuild=warn]
&gt; (...)</span ></pre>
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