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<div class="section" id="cmake-system-name">
<span id="variable:CMAKE_SYSTEM_NAME"></span><h1>CMAKE_SYSTEM_NAME<a class="headerlink" href="#cmake-system-name" title="Permalink to this headline"></a></h1>
<p>The name of the operating system for which CMake is to build.
See the <span class="target" id="index-0-variable:CMAKE_SYSTEM_VERSION"></span><a class="reference internal" href="CMAKE_SYSTEM_VERSION.html#variable:CMAKE_SYSTEM_VERSION" title="CMAKE_SYSTEM_VERSION"><code class="xref cmake cmake-variable docutils literal"><span class="pre">CMAKE_SYSTEM_VERSION</span></code></a> variable for the OS version.</p>
<div class="section" id="system-name-for-host-builds">
<h2>System Name for Host Builds<a class="headerlink" href="#system-name-for-host-builds" title="Permalink to this headline"></a></h2>
<p><code class="docutils literal"><span class="pre">CMAKE_SYSTEM_NAME</span></code> is by default set to the same value as the
<span class="target" id="index-0-variable:CMAKE_HOST_SYSTEM_NAME"></span><a class="reference internal" href="CMAKE_HOST_SYSTEM_NAME.html#variable:CMAKE_HOST_SYSTEM_NAME" title="CMAKE_HOST_SYSTEM_NAME"><code class="xref cmake cmake-variable docutils literal"><span class="pre">CMAKE_HOST_SYSTEM_NAME</span></code></a> variable so that the build
targets the host system.</p>
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<div class="section" id="system-name-for-cross-compiling">
<h2>System Name for Cross Compiling<a class="headerlink" href="#system-name-for-cross-compiling" title="Permalink to this headline"></a></h2>
<p><code class="docutils literal"><span class="pre">CMAKE_SYSTEM_NAME</span></code> may be set explicitly when first configuring a new build
tree in order to enable <a class="reference internal" href="../manual/cmake-toolchains.7.html#cross-compiling-toolchain"><span class="std std-ref">cross compiling</span></a>.
In this case the <span class="target" id="index-1-variable:CMAKE_SYSTEM_VERSION"></span><a class="reference internal" href="CMAKE_SYSTEM_VERSION.html#variable:CMAKE_SYSTEM_VERSION" title="CMAKE_SYSTEM_VERSION"><code class="xref cmake cmake-variable docutils literal"><span class="pre">CMAKE_SYSTEM_VERSION</span></code></a> variable must also be
set explicitly.</p>
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<li><a class="reference internal" href="#system-name-for-host-builds">System Name for Host Builds</a></li>
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