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| <div class="section" id="cmake-system-version"> |
| <span id="variable:CMAKE_SYSTEM_VERSION"></span><h1>CMAKE_SYSTEM_VERSION<a class="headerlink" href="#cmake-system-version" title="Permalink to this headline">¶</a></h1> |
| <p>The version of the operating system for which CMake is to build. |
| See the <span class="target" id="index-0-variable:CMAKE_SYSTEM_NAME"></span><a class="reference internal" href="CMAKE_SYSTEM_NAME.html#variable:CMAKE_SYSTEM_NAME" title="CMAKE_SYSTEM_NAME"><code class="xref cmake cmake-variable docutils literal notranslate"><span class="pre">CMAKE_SYSTEM_NAME</span></code></a> variable for the OS name.</p> |
| <div class="section" id="system-version-for-host-builds"> |
| <h2>System Version for Host Builds<a class="headerlink" href="#system-version-for-host-builds" title="Permalink to this headline">¶</a></h2> |
| <p>When the <span class="target" id="index-1-variable:CMAKE_SYSTEM_NAME"></span><a class="reference internal" href="CMAKE_SYSTEM_NAME.html#variable:CMAKE_SYSTEM_NAME" title="CMAKE_SYSTEM_NAME"><code class="xref cmake cmake-variable docutils literal notranslate"><span class="pre">CMAKE_SYSTEM_NAME</span></code></a> variable takes its default value |
| then <code class="docutils literal notranslate"><span class="pre">CMAKE_SYSTEM_VERSION</span></code> is by default set to the same value as the |
| <span class="target" id="index-0-variable:CMAKE_HOST_SYSTEM_VERSION"></span><a class="reference internal" href="CMAKE_HOST_SYSTEM_VERSION.html#variable:CMAKE_HOST_SYSTEM_VERSION" title="CMAKE_HOST_SYSTEM_VERSION"><code class="xref cmake cmake-variable docutils literal notranslate"><span class="pre">CMAKE_HOST_SYSTEM_VERSION</span></code></a> variable so that the build targets |
| the host system version.</p> |
| <p>In the case of a host build then <code class="docutils literal notranslate"><span class="pre">CMAKE_SYSTEM_VERSION</span></code> may be set |
| explicitly when first configuring a new build tree in order to enable |
| targeting the build for a different version of the host operating system |
| than is actually running on the host. This is allowed and not considered |
| cross compiling so long as the binaries built for the specified OS version |
| can still run on the host.</p> |
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| <div class="section" id="system-version-for-cross-compiling"> |
| <h2>System Version for Cross Compiling<a class="headerlink" href="#system-version-for-cross-compiling" title="Permalink to this headline">¶</a></h2> |
| <p>When the <span class="target" id="index-2-variable:CMAKE_SYSTEM_NAME"></span><a class="reference internal" href="CMAKE_SYSTEM_NAME.html#variable:CMAKE_SYSTEM_NAME" title="CMAKE_SYSTEM_NAME"><code class="xref cmake cmake-variable docutils literal notranslate"><span class="pre">CMAKE_SYSTEM_NAME</span></code></a> variable is set explicitly to |
| enable <a class="reference internal" href="../manual/cmake-toolchains.7.html#cross-compiling-toolchain"><span class="std std-ref">cross compiling</span></a> then the |
| value of <code class="docutils literal notranslate"><span class="pre">CMAKE_SYSTEM_VERSION</span></code> must also be set explicitly to specify |
| the target system version.</p> |
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| <li><a class="reference internal" href="#">CMAKE_SYSTEM_VERSION</a><ul> |
| <li><a class="reference internal" href="#system-version-for-host-builds">System Version for Host Builds</a></li> |
| <li><a class="reference internal" href="#system-version-for-cross-compiling">System Version for Cross Compiling</a></li> |
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