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        <tr>
          <th>Bug ID</th>
          <td><a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - KHR/khrplatform.h not always installed when needed"
   href="https://bugs.freedesktop.org/show_bug.cgi?id=107511">107511</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>KHR/khrplatform.h not always installed when needed
          </td>
        </tr>

        <tr>
          <th>Product</th>
          <td>Mesa
          </td>
        </tr>

        <tr>
          <th>Version</th>
          <td>git
          </td>
        </tr>

        <tr>
          <th>Hardware</th>
          <td>All
          </td>
        </tr>

        <tr>
          <th>OS</th>
          <td>All
          </td>
        </tr>

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

        <tr>
          <th>Severity</th>
          <td>blocker
          </td>
        </tr>

        <tr>
          <th>Priority</th>
          <td>medium
          </td>
        </tr>

        <tr>
          <th>Component</th>
          <td>Other
          </td>
        </tr>

        <tr>
          <th>Assignee</th>
          <td>mesa-dev@lists.freedesktop.org
          </td>
        </tr>

        <tr>
          <th>Reporter</th>
          <td>brad.king@kitware.com
          </td>
        </tr>

        <tr>
          <th>QA Contact</th>
          <td>mesa-dev@lists.freedesktop.org
          </td>
        </tr></table>
      <p>
        <div>
        <pre>Since commit f7d42ee7d3 (include: update GL & GLES headers (v2), 2018-07-18)
the 'KHR/khrplatform.h' header is included by 'GL/glcorearb.h' and 'GL/glext.h'
but 'configure.ac' still says

    AM_CONDITIONAL(NEED_KHRPLATFORM, test "x$enable_egl" = xyes -o \
                                          "x$enable_gles1" = xyes -o \
                                          "x$enable_gles2" = xyes)

Therefore configuring with all three of those disabled:

    ./autogen.sh \
      --prefix="$prefix" \
      --enable-debug \
      --disable-dri \
      --disable-egl \
      --disable-gbm \
      --disable-gles1 \
      --disable-gles2 \
      --disable-shared-glapi \
      --with-platforms=x11 \
      --enable-glx=gallium-xlib \
      --enable-gallium-osmesa \
      --with-gallium-drivers=swrast \
      --enable-gallium-llvm=yes \
        LLVM_CONFIG=$llvm_config \
      --enable-llvm-shared-libs \

creates an installation that gives preprocessing errors to clients:

    /.../include/GL/glext.h:467:10: fatal error: KHR/khrplatform.h: No such
file or directory</pre>
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