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| <div class="section" id="cmake-user-make-rules-override"> |
| <span id="variable:CMAKE_USER_MAKE_RULES_OVERRIDE"></span><h1>CMAKE_USER_MAKE_RULES_OVERRIDE<a class="headerlink" href="#cmake-user-make-rules-override" title="Permalink to this headline">ΒΆ</a></h1> |
| <p>Specify a CMake file that overrides platform information.</p> |
| <p>CMake loads the specified file while enabling support for each |
| language from either the <span class="target" id="index-0-command:project"></span><a class="reference internal" href="../command/project.html#command:project" title="project"><code class="xref cmake cmake-command docutils literal notranslate"><span class="pre">project()</span></code></a> or <span class="target" id="index-0-command:enable_language"></span><a class="reference internal" href="../command/enable_language.html#command:enable_language" title="enable_language"><code class="xref cmake cmake-command docutils literal notranslate"><span class="pre">enable_language()</span></code></a> |
| commands. It is loaded after CMake's builtin compiler and platform information |
| modules have been loaded but before the information is used. The file |
| may set platform information variables to override CMake's defaults.</p> |
| <p>This feature is intended for use only in overriding information |
| variables that must be set before CMake builds its first test project |
| to check that the compiler for a language works. It should not be |
| used to load a file in cases that a normal <span class="target" id="index-0-command:include"></span><a class="reference internal" href="../command/include.html#command:include" title="include"><code class="xref cmake cmake-command docutils literal notranslate"><span class="pre">include()</span></code></a> will work. Use |
| it only as a last resort for behavior that cannot be achieved any |
| other way. For example, one may set the |
| <span class="target" id="index-0-variable:CMAKE_<LANG>_FLAGS_INIT"></span><a class="reference internal" href="CMAKE_LANG_FLAGS_INIT.html#variable:CMAKE_<LANG>_FLAGS_INIT" title="CMAKE_<LANG>_FLAGS_INIT"><code class="xref cmake cmake-variable docutils literal notranslate"><span class="pre">CMAKE_C_FLAGS_INIT</span></code></a> variable |
| to change the default value used to initialize the |
| <span class="target" id="index-0-variable:CMAKE_<LANG>_FLAGS"></span><a class="reference internal" href="CMAKE_LANG_FLAGS.html#variable:CMAKE_<LANG>_FLAGS" title="CMAKE_<LANG>_FLAGS"><code class="xref cmake cmake-variable docutils literal notranslate"><span class="pre">CMAKE_C_FLAGS</span></code></a> variable |
| before it is cached. The override file should NOT be used to set anything |
| that could be set after languages are enabled, such as variables like |
| <span class="target" id="index-0-variable:CMAKE_RUNTIME_OUTPUT_DIRECTORY"></span><a class="reference internal" href="CMAKE_RUNTIME_OUTPUT_DIRECTORY.html#variable:CMAKE_RUNTIME_OUTPUT_DIRECTORY" title="CMAKE_RUNTIME_OUTPUT_DIRECTORY"><code class="xref cmake cmake-variable docutils literal notranslate"><span class="pre">CMAKE_RUNTIME_OUTPUT_DIRECTORY</span></code></a> that affect the placement of |
| binaries. Information set in the file will be used for <span class="target" id="index-0-command:try_compile"></span><a class="reference internal" href="../command/try_compile.html#command:try_compile" title="try_compile"><code class="xref cmake cmake-command docutils literal notranslate"><span class="pre">try_compile()</span></code></a> |
| and <span class="target" id="index-0-command:try_run"></span><a class="reference internal" href="../command/try_run.html#command:try_run" title="try_run"><code class="xref cmake cmake-command docutils literal notranslate"><span class="pre">try_run()</span></code></a> builds too.</p> |
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