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| <span id="policy:CMP0119"></span><h1>CMP0119<a class="headerlink" href="#cmp0119" title="Permalink to this headline">ΒΆ</a></h1> | |
| <div class="versionadded"> | |
| <p><span class="versionmodified added">New in version 3.20.</span></p> | |
| </div> | |
| <p><span class="target" id="index-0-prop_sf:LANGUAGE"></span><a class="reference internal" href="../prop_sf/LANGUAGE.html#prop_sf:LANGUAGE" title="LANGUAGE"><code class="xref cmake cmake-prop_sf docutils literal notranslate"><span class="pre">LANGUAGE</span></code></a> source file property explicitly compiles as specified | |
| language.</p> | |
| <p>The <span class="target" id="index-1-prop_sf:LANGUAGE"></span><a class="reference internal" href="../prop_sf/LANGUAGE.html#prop_sf:LANGUAGE" title="LANGUAGE"><code class="xref cmake cmake-prop_sf docutils literal notranslate"><span class="pre">LANGUAGE</span></code></a> source file property is documented to mean that the | |
| source file is written in the specified language. In CMake 3.19 and below, | |
| setting this property causes CMake to compile the source file using the | |
| compiler for the specified language. However, it only passes an explicit | |
| flag to tell the compiler to treat the source as the specified language | |
| for MSVC-like, XL, and Embarcadero compilers for the <code class="docutils literal notranslate"><span class="pre">CXX</span></code> language. | |
| CMake 3.20 and above prefer to also explicitly tell the compiler to use | |
| the specified language using a flag such as <code class="docutils literal notranslate"><span class="pre">-x</span> <span class="pre">c</span></code> on all compilers | |
| for which such flags are known.</p> | |
| <p>This policy provides compatibility for projects that have not been updated | |
| to expect this behavior. For example, some projects were setting the | |
| <code class="docutils literal notranslate"><span class="pre">LANGUAGE</span></code> property to <code class="docutils literal notranslate"><span class="pre">C</span></code> on assembly-language <code class="docutils literal notranslate"><span class="pre">.S</span></code> source files | |
| in order to compile them using the C compiler. Such projects should be | |
| updated to use <code class="docutils literal notranslate"><span class="pre">enable_language(ASM)</span></code>, for which CMake will often choose | |
| the C compiler as the assembler on relevant platforms anyway.</p> | |
| <p>The <code class="docutils literal notranslate"><span class="pre">OLD</span></code> behavior for this policy is to interpret the <code class="docutils literal notranslate"><span class="pre">LANGUAGE</span> <span class="pre"><LANG></span></code> | |
| property using its undocumented meaning to "use the <code class="docutils literal notranslate"><span class="pre"><LANG></span></code> compiler". | |
| The <code class="docutils literal notranslate"><span class="pre">NEW</span></code> behavior for this policy is to interpret the <code class="docutils literal notranslate"><span class="pre">LANGUAGE</span> <span class="pre"><LANG></span></code> | |
| property using its documented meaning to "compile as a <code class="docutils literal notranslate"><span class="pre"><LANG></span></code> source".</p> | |
| <p>This policy was introduced in CMake version 3.20. Use the | |
| <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()</span></code></a> command to set it to <code class="docutils literal notranslate"><span class="pre">OLD</span></code> or <code class="docutils literal notranslate"><span class="pre">NEW</span></code> explicitly. | |
| Unlike many policies, CMake version 3.23.1 does <em>not</em> warn | |
| when this policy is not set and simply uses <code class="docutils literal notranslate"><span class="pre">OLD</span></code> behavior.</p> | |
| <div class="admonition note"> | |
| <p class="admonition-title">Note</p> | |
| <p>The <code class="docutils literal notranslate"><span class="pre">OLD</span></code> behavior of a policy is | |
| <span class="target" id="index-0-manual:cmake-policies(7)"></span><a class="reference internal" href="../manual/cmake-policies.7.html#manual:cmake-policies(7)" title="cmake-policies(7)"><code class="xref cmake cmake-manual docutils literal notranslate"><span class="pre">deprecated</span> <span class="pre">by</span> <span class="pre">definition</span></code></a> | |
| and may be removed in a future version of CMake.</p> | |
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