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| <div class="section" id="cmake-policy-default-cmp-nnnn"> |
| <span id="variable:CMAKE_POLICY_DEFAULT_CMP<NNNN>"></span><h1>CMAKE_POLICY_DEFAULT_CMP<NNNN><a class="headerlink" href="#cmake-policy-default-cmp-nnnn" title="Permalink to this headline">ΒΆ</a></h1> |
| <p>Default for CMake Policy <code class="docutils literal notranslate"><span class="pre">CMP<NNNN></span></code> when it is otherwise left unset.</p> |
| <p>Commands <span class="target" id="index-0-command:cmake_minimum_required"></span><a class="reference internal" href="../command/cmake_minimum_required.html#command:cmake_minimum_required" title="cmake_minimum_required"><code class="xref cmake cmake-command docutils literal notranslate"><span class="pre">cmake_minimum_required(VERSION)</span></code></a> and |
| <span class="target" id="index-0-command:cmake_policy"></span><a class="reference internal" href="../command/cmake_policy.html#command:cmake_policy" title="cmake_policy"><code class="xref cmake cmake-command docutils literal notranslate"><span class="pre">cmake_policy(VERSION)</span></code></a> by default leave policies introduced after |
| the given version unset. Set <code class="docutils literal notranslate"><span class="pre">CMAKE_POLICY_DEFAULT_CMP<NNNN></span></code> to <code class="docutils literal notranslate"><span class="pre">OLD</span></code> |
| or <code class="docutils literal notranslate"><span class="pre">NEW</span></code> to specify the default for policy <code class="docutils literal notranslate"><span class="pre">CMP<NNNN></span></code>, where <code class="docutils literal notranslate"><span class="pre"><NNNN></span></code> |
| is the policy number.</p> |
| <p>This variable should not be set by a project in CMake code as a way to |
| set its own policies; use <span class="target" id="index-1-command:cmake_policy"></span><a class="reference internal" href="../command/cmake_policy.html#command:cmake_policy" title="cmake_policy"><code class="xref cmake cmake-command docutils literal notranslate"><span class="pre">cmake_policy(SET)</span></code></a> instead. This |
| variable is meant to externally set policies for which a project has |
| not itself been updated:</p> |
| <ul class="simple"> |
| <li><p>Users running CMake may set this variable in the cache |
| (e.g. <code class="docutils literal notranslate"><span class="pre">-DCMAKE_POLICY_DEFAULT_CMP<NNNN>=<OLD|NEW></span></code>). Set it to <code class="docutils literal notranslate"><span class="pre">OLD</span></code> |
| to quiet a policy warning while using old behavior or to <code class="docutils literal notranslate"><span class="pre">NEW</span></code> to |
| try building the project with new behavior.</p></li> |
| <li><p>Projects may set this variable before a call to <span class="target" id="index-0-command:add_subdirectory"></span><a class="reference internal" href="../command/add_subdirectory.html#command:add_subdirectory" title="add_subdirectory"><code class="xref cmake cmake-command docutils literal notranslate"><span class="pre">add_subdirectory()</span></code></a> |
| that adds a third-party project in order to set its policies without |
| modifying third-party code.</p></li> |
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