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   <div class="section" id="c-standard-required">
 <span id="prop_tgt:C_STANDARD_REQUIRED"></span><h1>C_STANDARD_REQUIRED<a class="headerlink" href="#c-standard-required" title="Permalink to this headline">¶</a></h1>
 <p>Boolean describing whether the value of <span class="target" id="index-0-prop_tgt:C_STANDARD"></span><a class="reference internal" href="C_STANDARD.html#prop_tgt:C_STANDARD" title="C_STANDARD"><code class="xref cmake cmake-prop_tgt docutils literal"><span class="pre">C_STANDARD</span></code></a> is a requirement.</p>
 <p>If this property is set to <code class="docutils literal"><span class="pre">ON</span></code>, then the value of the
 <span class="target" id="index-1-prop_tgt:C_STANDARD"></span><a class="reference internal" href="C_STANDARD.html#prop_tgt:C_STANDARD" title="C_STANDARD"><code class="xref cmake cmake-prop_tgt docutils literal"><span class="pre">C_STANDARD</span></code></a> target property is treated as a requirement.  If this
 property is <code class="docutils literal"><span class="pre">OFF</span></code> or unset, the <span class="target" id="index-2-prop_tgt:C_STANDARD"></span><a class="reference internal" href="C_STANDARD.html#prop_tgt:C_STANDARD" title="C_STANDARD"><code class="xref cmake cmake-prop_tgt docutils literal"><span class="pre">C_STANDARD</span></code></a> target property is
 treated as optional and may &#8220;decay&#8221; to a previous standard if the requested is
 not available.  For compilers that have no notion of a standard level, such as
 MSVC, this has no effect.</p>
 <p>See the <span class="target" id="index-0-manual:cmake-compile-features(7)"></span><a class="reference internal" href="../manual/cmake-compile-features.7.html#manual:cmake-compile-features(7)" title="cmake-compile-features(7)"><code class="xref cmake cmake-manual docutils literal"><span class="pre">cmake-compile-features(7)</span></code></a> manual for information on
 compile features and a list of supported compilers.</p>
 <p>This property is initialized by the value of
 the <span class="target" id="index-0-variable:CMAKE_C_STANDARD_REQUIRED"></span><a class="reference internal" href="../variable/CMAKE_C_STANDARD_REQUIRED.html#variable:CMAKE_C_STANDARD_REQUIRED" title="CMAKE_C_STANDARD_REQUIRED"><code class="xref cmake cmake-variable docutils literal"><span class="pre">CMAKE_C_STANDARD_REQUIRED</span></code></a> variable if it is set when a
 target is created.</p>
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	<span id="prop_tgt:C_STANDARD_REQUIRED"></span><h1>C_STANDARD_REQUIRED<a class="headerlink" href="#c-standard-required" title="Permalink to this headline">¶</a></h1>
	<p>Boolean describing whether the value of <span class="target" id="index-0-prop_tgt:C_STANDARD"></span><a class="reference internal" href="C_STANDARD.html#prop_tgt:C_STANDARD" title="C_STANDARD"><code class="xref cmake cmake-prop_tgt docutils literal"><span class="pre">C_STANDARD</span></code></a> is a requirement.</p>
	<p>If this property is set to <code class="docutils literal"><span class="pre">ON</span></code>, then the value of the
	<span class="target" id="index-1-prop_tgt:C_STANDARD"></span><a class="reference internal" href="C_STANDARD.html#prop_tgt:C_STANDARD" title="C_STANDARD"><code class="xref cmake cmake-prop_tgt docutils literal"><span class="pre">C_STANDARD</span></code></a> target property is treated as a requirement. If this
	property is <code class="docutils literal"><span class="pre">OFF</span></code> or unset, the <span class="target" id="index-2-prop_tgt:C_STANDARD"></span><a class="reference internal" href="C_STANDARD.html#prop_tgt:C_STANDARD" title="C_STANDARD"><code class="xref cmake cmake-prop_tgt docutils literal"><span class="pre">C_STANDARD</span></code></a> target property is
	treated as optional and may “decay” to a previous standard if the requested is
	not available. For compilers that have no notion of a standard level, such as
	MSVC, this has no effect.</p>
	<p>See the <span class="target" id="index-0-manual:cmake-compile-features(7)"></span><a class="reference internal" href="../manual/cmake-compile-features.7.html#manual:cmake-compile-features(7)" title="cmake-compile-features(7)"><code class="xref cmake cmake-manual docutils literal"><span class="pre">cmake-compile-features(7)</span></code></a> manual for information on
	compile features and a list of supported compilers.</p>
	<p>This property is initialized by the value of
	the <span class="target" id="index-0-variable:CMAKE_C_STANDARD_REQUIRED"></span><a class="reference internal" href="../variable/CMAKE_C_STANDARD_REQUIRED.html#variable:CMAKE_C_STANDARD_REQUIRED" title="CMAKE_C_STANDARD_REQUIRED"><code class="xref cmake cmake-variable docutils literal"><span class="pre">CMAKE_C_STANDARD_REQUIRED</span></code></a> variable if it is set when a
	target is created.</p>
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