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| <span id="prop_tgt:<LANG>_STANDARD_REQUIRED"></span><h1><LANG>_STANDARD_REQUIRED<a class="headerlink" href="#lang-standard-required" title="Permalink to this headline">ΒΆ</a></h1> |
| <p>The variations are:</p> |
| <ul class="simple"> |
| <li><p><span class="target" id="index-0-prop_tgt:C_STANDARD_REQUIRED"></span><a class="reference internal" href="C_STANDARD_REQUIRED.html#prop_tgt:C_STANDARD_REQUIRED" title="C_STANDARD_REQUIRED"><code class="xref cmake cmake-prop_tgt docutils literal notranslate"><span class="pre">C_STANDARD_REQUIRED</span></code></a></p></li> |
| <li><p><span class="target" id="index-0-prop_tgt:CXX_STANDARD_REQUIRED"></span><a class="reference internal" href="CXX_STANDARD_REQUIRED.html#prop_tgt:CXX_STANDARD_REQUIRED" title="CXX_STANDARD_REQUIRED"><code class="xref cmake cmake-prop_tgt docutils literal notranslate"><span class="pre">CXX_STANDARD_REQUIRED</span></code></a></p></li> |
| <li><p><span class="target" id="index-0-prop_tgt:CUDA_STANDARD_REQUIRED"></span><a class="reference internal" href="CUDA_STANDARD_REQUIRED.html#prop_tgt:CUDA_STANDARD_REQUIRED" title="CUDA_STANDARD_REQUIRED"><code class="xref cmake cmake-prop_tgt docutils literal notranslate"><span class="pre">CUDA_STANDARD_REQUIRED</span></code></a></p></li> |
| <li><p><span class="target" id="index-0-prop_tgt:HIP_STANDARD_REQUIRED"></span><a class="reference internal" href="HIP_STANDARD_REQUIRED.html#prop_tgt:HIP_STANDARD_REQUIRED" title="HIP_STANDARD_REQUIRED"><code class="xref cmake cmake-prop_tgt docutils literal notranslate"><span class="pre">HIP_STANDARD_REQUIRED</span></code></a></p></li> |
| <li><p><span class="target" id="index-0-prop_tgt:OBJC_STANDARD_REQUIRED"></span><a class="reference internal" href="OBJC_STANDARD_REQUIRED.html#prop_tgt:OBJC_STANDARD_REQUIRED" title="OBJC_STANDARD_REQUIRED"><code class="xref cmake cmake-prop_tgt docutils literal notranslate"><span class="pre">OBJC_STANDARD_REQUIRED</span></code></a></p></li> |
| <li><p><span class="target" id="index-0-prop_tgt:OBJCXX_STANDARD_REQUIRED"></span><a class="reference internal" href="OBJCXX_STANDARD_REQUIRED.html#prop_tgt:OBJCXX_STANDARD_REQUIRED" title="OBJCXX_STANDARD_REQUIRED"><code class="xref cmake cmake-prop_tgt docutils literal notranslate"><span class="pre">OBJCXX_STANDARD_REQUIRED</span></code></a></p></li> |
| </ul> |
| <p>These properties specify whether the value of <span class="target" id="index-0-prop_tgt:<LANG>_STANDARD"></span><a class="reference internal" href="LANG_STANDARD.html#prop_tgt:<LANG>_STANDARD" title="<LANG>_STANDARD"><code class="xref cmake cmake-prop_tgt docutils literal notranslate"><span class="pre"><LANG>_STANDARD</span></code></a> is a |
| requirement. When false or unset, the <span class="target" id="index-1-prop_tgt:<LANG>_STANDARD"></span><a class="reference internal" href="LANG_STANDARD.html#prop_tgt:<LANG>_STANDARD" title="<LANG>_STANDARD"><code class="xref cmake cmake-prop_tgt docutils literal notranslate"><span class="pre"><LANG>_STANDARD</span></code></a> target |
| property is treated as optional and may "decay" to a previous standard if the |
| requested standard is not available. When <code class="docutils literal notranslate"><span class="pre"><LANG>_STANDARD_REQUIRED</span></code> is set |
| to true, <span class="target" id="index-2-prop_tgt:<LANG>_STANDARD"></span><a class="reference internal" href="LANG_STANDARD.html#prop_tgt:<LANG>_STANDARD" title="<LANG>_STANDARD"><code class="xref cmake cmake-prop_tgt docutils literal notranslate"><span class="pre"><LANG>_STANDARD</span></code></a> becomes a hard requirement and a fatal |
| error will be issued if that requirement cannot be met.</p> |
| <p>Note that the actual language standard used may be higher than that specified |
| by <span class="target" id="index-3-prop_tgt:<LANG>_STANDARD"></span><a class="reference internal" href="LANG_STANDARD.html#prop_tgt:<LANG>_STANDARD" title="<LANG>_STANDARD"><code class="xref cmake cmake-prop_tgt docutils literal notranslate"><span class="pre"><LANG>_STANDARD</span></code></a>, regardless of the value of |
| <code class="docutils literal notranslate"><span class="pre"><LANG>_STANDARD_REQUIRED</span></code>. In particular, |
| <a class="reference internal" href="../manual/cmake-buildsystem.7.html#target-usage-requirements"><span class="std std-ref">transitive usage requirements</span></a> or the use of |
| <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 notranslate"><span class="pre">compile</span> <span class="pre">features</span></code></a> can raise the required |
| language standard above what <span class="target" id="index-4-prop_tgt:<LANG>_STANDARD"></span><a class="reference internal" href="LANG_STANDARD.html#prop_tgt:<LANG>_STANDARD" title="<LANG>_STANDARD"><code class="xref cmake cmake-prop_tgt docutils literal notranslate"><span class="pre"><LANG>_STANDARD</span></code></a> specifies.</p> |
| <p>These properties are initialized by the value of the |
| <span class="target" id="index-0-variable:CMAKE_<LANG>_STANDARD_REQUIRED"></span><a class="reference internal" href="../variable/CMAKE_LANG_STANDARD_REQUIRED.html#variable:CMAKE_<LANG>_STANDARD_REQUIRED" title="CMAKE_<LANG>_STANDARD_REQUIRED"><code class="xref cmake cmake-variable docutils literal notranslate"><span class="pre">CMAKE_<LANG>_STANDARD_REQUIRED</span></code></a> variable if it is set when a target |
| is created.</p> |
| <p>See the <span class="target" id="index-1-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 notranslate"><span class="pre">cmake-compile-features(7)</span></code></a> manual for information on |
| compile features and a list of supported compilers.</p> |
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