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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 - Touching any IDL files rebuilds all bindings in CMake Ninja build"
   href="https://bugs.webkit.org/show_bug.cgi?id=156400">156400</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>Touching any IDL files rebuilds all bindings in CMake Ninja build
          </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>WebKit Misc.
          </td>
        </tr>

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

        <tr>
          <th>Reporter</th>
          <td>Hironori.Fujii&#64;jp.sony.com
          </td>
        </tr></table>
      <p>
        <div>
        <pre>Touching any IDL files rebuilds all bindings in CMake Ninja build

preprocess-idls.pl has a function WriteFileIfChanged not to
update files unnecessary to be updated.

preprocess-idls.pl outputs four files supplemental_dependency.tmp,
DOMWindowConstructors.idl, WorkerGlobalScopeConstructors.idl and
DedicatedWorkerGlobalScopeConstructors.idl.  WriteFileIfChanged works
only for DedicatedWorkerGlobalScopeConstructors.idl.

It does not work due to flaky results of 'keys'.
Results of 'keys' are flaky, should be processed by 'sort'.

I tested with GTK port Ninja build:

<span class="quote">&gt; ./Tools/Scripts/build-webkit --gtk
&gt; touch Source/WebCore/dom/Document.idl</span ></pre>
        </div>
      </p>
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