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| <div class="section" id="add-compile-definitions"> |
| <span id="command:add_compile_definitions"></span><h1>add_compile_definitions<a class="headerlink" href="#add-compile-definitions" title="Permalink to this headline">ΒΆ</a></h1> |
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| <p><span class="versionmodified added">New in version 3.12.</span></p> |
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| <p>Add preprocessor definitions to the compilation of source files.</p> |
| <div class="highlight-cmake notranslate"><div class="highlight"><pre><span></span><span class="nf">add_compile_definitions(</span><span class="nv"><definition></span><span class="w"> </span><span class="p">...</span><span class="nf">)</span><span class="w"></span> |
| </pre></div> |
| </div> |
| <p>Adds preprocessor definitions to the compiler command line.</p> |
| <p>The preprocessor definitions are added to the <span class="target" id="index-0-prop_dir:COMPILE_DEFINITIONS"></span><a class="reference internal" href="../prop_dir/COMPILE_DEFINITIONS.html#prop_dir:COMPILE_DEFINITIONS" title="COMPILE_DEFINITIONS"><code class="xref cmake cmake-prop_dir docutils literal notranslate"><span class="pre">COMPILE_DEFINITIONS</span></code></a> |
| directory property for the current <code class="docutils literal notranslate"><span class="pre">CMakeLists</span></code> file. They are also added to |
| the <span class="target" id="index-0-prop_tgt:COMPILE_DEFINITIONS"></span><a class="reference internal" href="../prop_tgt/COMPILE_DEFINITIONS.html#prop_tgt:COMPILE_DEFINITIONS" title="COMPILE_DEFINITIONS"><code class="xref cmake cmake-prop_tgt docutils literal notranslate"><span class="pre">COMPILE_DEFINITIONS</span></code></a> target property for each target in the |
| current <code class="docutils literal notranslate"><span class="pre">CMakeLists</span></code> file.</p> |
| <p>Definitions are specified using the syntax <code class="docutils literal notranslate"><span class="pre">VAR</span></code> or <code class="docutils literal notranslate"><span class="pre">VAR=value</span></code>. |
| Function-style definitions are not supported. CMake will automatically |
| escape the value correctly for the native build system (note that CMake |
| language syntax may require escapes to specify some values).</p> |
| <p>Arguments to <code class="docutils literal notranslate"><span class="pre">add_compile_definitions</span></code> may use "generator expressions" with |
| the syntax <code class="docutils literal notranslate"><span class="pre">$<...></span></code>. See the <span class="target" id="index-0-manual:cmake-generator-expressions(7)"></span><a class="reference internal" href="../manual/cmake-generator-expressions.7.html#manual:cmake-generator-expressions(7)" title="cmake-generator-expressions(7)"><code class="xref cmake cmake-manual docutils literal notranslate"><span class="pre">cmake-generator-expressions(7)</span></code></a> |
| manual for available expressions. See the <span class="target" id="index-0-manual:cmake-buildsystem(7)"></span><a class="reference internal" href="../manual/cmake-buildsystem.7.html#manual:cmake-buildsystem(7)" title="cmake-buildsystem(7)"><code class="xref cmake cmake-manual docutils literal notranslate"><span class="pre">cmake-buildsystem(7)</span></code></a> |
| manual for more on defining buildsystem properties.</p> |
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