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| <div class="section" id="automoc-path-prefix"> |
| <span id="prop_tgt:AUTOMOC_PATH_PREFIX"></span><h1>AUTOMOC_PATH_PREFIX<a class="headerlink" href="#automoc-path-prefix" title="Permalink to this headline">¶</a></h1> |
| <div class="versionadded"> |
| <p><span class="versionmodified added">New in version 3.16.</span></p> |
| </div> |
| <p>When this property is <code class="docutils literal notranslate"><span class="pre">ON</span></code>, CMake will generate the <code class="docutils literal notranslate"><span class="pre">-p</span></code> path prefix |
| option for <code class="docutils literal notranslate"><span class="pre">moc</span></code> on <span class="target" id="index-0-prop_tgt:AUTOMOC"></span><a class="reference internal" href="AUTOMOC.html#prop_tgt:AUTOMOC" title="AUTOMOC"><code class="xref cmake cmake-prop_tgt docutils literal notranslate"><span class="pre">AUTOMOC</span></code></a> enabled Qt targets.</p> |
| <p>To generate the path prefix, CMake tests if the header compiled by <code class="docutils literal notranslate"><span class="pre">moc</span></code> |
| is in any of the target |
| <span class="target" id="index-0-command:target_include_directories"></span><a class="reference internal" href="../command/target_include_directories.html#command:target_include_directories" title="target_include_directories"><code class="xref cmake cmake-command docutils literal notranslate"><span class="pre">include</span> <span class="pre">directories</span></code></a>. If so, CMake will |
| compute the relative path accordingly. If the header is not in the |
| <span class="target" id="index-1-command:target_include_directories"></span><a class="reference internal" href="../command/target_include_directories.html#command:target_include_directories" title="target_include_directories"><code class="xref cmake cmake-command docutils literal notranslate"><span class="pre">include</span> <span class="pre">directories</span></code></a>, CMake will omit |
| the <code class="docutils literal notranslate"><span class="pre">-p</span></code> path prefix option. <code class="docutils literal notranslate"><span class="pre">moc</span></code> usually generates a |
| relative include path in that case.</p> |
| <p><span class="target" id="index-0-prop_tgt:AUTOMOC_PATH_PREFIX"></span><a class="reference internal" href="#prop_tgt:AUTOMOC_PATH_PREFIX" title="AUTOMOC_PATH_PREFIX"><code class="xref cmake cmake-prop_tgt docutils literal notranslate"><span class="pre">AUTOMOC_PATH_PREFIX</span></code></a> is initialized from the variable |
| <span class="target" id="index-0-variable:CMAKE_AUTOMOC_PATH_PREFIX"></span><a class="reference internal" href="../variable/CMAKE_AUTOMOC_PATH_PREFIX.html#variable:CMAKE_AUTOMOC_PATH_PREFIX" title="CMAKE_AUTOMOC_PATH_PREFIX"><code class="xref cmake cmake-variable docutils literal notranslate"><span class="pre">CMAKE_AUTOMOC_PATH_PREFIX</span></code></a>, which is <code class="docutils literal notranslate"><span class="pre">OFF</span></code> by default.</p> |
| <p>See the <span class="target" id="index-0-manual:cmake-qt(7)"></span><a class="reference internal" href="../manual/cmake-qt.7.html#manual:cmake-qt(7)" title="cmake-qt(7)"><code class="xref cmake cmake-manual docutils literal notranslate"><span class="pre">cmake-qt(7)</span></code></a> manual for more information on using CMake |
| with Qt.</p> |
| <div class="section" id="reproducible-builds"> |
| <h2>Reproducible builds<a class="headerlink" href="#reproducible-builds" title="Permalink to this headline">¶</a></h2> |
| <p>For reproducible builds it is recommended to keep headers that are <code class="docutils literal notranslate"><span class="pre">moc</span></code> |
| compiled in one of the target |
| <span class="target" id="index-2-command:target_include_directories"></span><a class="reference internal" href="../command/target_include_directories.html#command:target_include_directories" title="target_include_directories"><code class="xref cmake cmake-command docutils literal notranslate"><span class="pre">include</span> <span class="pre">directories</span></code></a> and set |
| <span class="target" id="index-1-prop_tgt:AUTOMOC_PATH_PREFIX"></span><a class="reference internal" href="#prop_tgt:AUTOMOC_PATH_PREFIX" title="AUTOMOC_PATH_PREFIX"><code class="xref cmake cmake-prop_tgt docutils literal notranslate"><span class="pre">AUTOMOC_PATH_PREFIX</span></code></a> to <code class="docutils literal notranslate"><span class="pre">ON</span></code>. This ensures that:</p> |
| <ul class="simple"> |
| <li><p><code class="docutils literal notranslate"><span class="pre">moc</span></code> output files are identical on different build setups,</p></li> |
| <li><p><code class="docutils literal notranslate"><span class="pre">moc</span></code> output files will compile correctly when the source and/or |
| build directory is a symbolic link.</p></li> |
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| <li><a class="reference internal" href="#reproducible-builds">Reproducible builds</a></li> |
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