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| <div class="section" id="cmp0026"> |
| <span id="policy:CMP0026"></span><h1>CMP0026<a class="headerlink" href="#cmp0026" title="Permalink to this headline">ΒΆ</a></h1> |
| <p>Disallow use of the LOCATION property for build targets.</p> |
| <p>CMake 2.8.12 and lower allowed reading the <span class="target" id="index-0-prop_tgt:LOCATION"></span><a class="reference internal" href="../prop_tgt/LOCATION.html#prop_tgt:LOCATION" title="LOCATION"><code class="xref cmake cmake-prop_tgt docutils literal notranslate"><span class="pre">LOCATION</span></code></a> target |
| property (and configuration-specific variants) to |
| determine the eventual location of build targets. This relies on the |
| assumption that all necessary information is available at |
| configure-time to determine the final location and filename of the |
| target. However, this property is not fully determined until later at |
| generate-time. At generate time, the <span class="target" id="index-0-genex:TARGET_FILE"></span><a class="reference internal" href="../manual/cmake-generator-expressions.7.html#genex:TARGET_FILE" title="TARGET_FILE"><code class="xref cmake cmake-genex docutils literal notranslate"><span class="pre">$<TARGET_FILE></span></code></a> generator |
| expression can be used to determine the eventual <span class="target" id="index-1-prop_tgt:LOCATION"></span><a class="reference internal" href="../prop_tgt/LOCATION.html#prop_tgt:LOCATION" title="LOCATION"><code class="xref cmake cmake-prop_tgt docutils literal notranslate"><span class="pre">LOCATION</span></code></a> of a target |
| output.</p> |
| <p>Code which reads the <span class="target" id="index-2-prop_tgt:LOCATION"></span><a class="reference internal" href="../prop_tgt/LOCATION.html#prop_tgt:LOCATION" title="LOCATION"><code class="xref cmake cmake-prop_tgt docutils literal notranslate"><span class="pre">LOCATION</span></code></a> target property can be ported to |
| use the <span class="target" id="index-1-genex:TARGET_FILE"></span><a class="reference internal" href="../manual/cmake-generator-expressions.7.html#genex:TARGET_FILE" title="TARGET_FILE"><code class="xref cmake cmake-genex docutils literal notranslate"><span class="pre">$<TARGET_FILE></span></code></a> generator expression together with the |
| <span class="target" id="index-0-command:file"></span><a class="reference internal" href="../command/file.html#command:file" title="file"><code class="xref cmake cmake-command docutils literal notranslate"><span class="pre">file(GENERATE)</span></code></a> subcommand to generate a file containing |
| the target location.</p> |
| <p>The <code class="docutils literal notranslate"><span class="pre">OLD</span></code> behavior for this policy is to allow reading the <span class="target" id="index-3-prop_tgt:LOCATION"></span><a class="reference internal" href="../prop_tgt/LOCATION.html#prop_tgt:LOCATION" title="LOCATION"><code class="xref cmake cmake-prop_tgt docutils literal notranslate"><span class="pre">LOCATION</span></code></a> |
| properties from build-targets. The <code class="docutils literal notranslate"><span class="pre">NEW</span></code> behavior for this policy is to |
| not to allow reading the <span class="target" id="index-4-prop_tgt:LOCATION"></span><a class="reference internal" href="../prop_tgt/LOCATION.html#prop_tgt:LOCATION" title="LOCATION"><code class="xref cmake cmake-prop_tgt docutils literal notranslate"><span class="pre">LOCATION</span></code></a> properties from build-targets.</p> |
| <p>This policy was introduced in CMake version 3.0. CMake version |
| 3.23.1 warns when the policy is not set and uses <code class="docutils literal notranslate"><span class="pre">OLD</span></code> behavior. 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.</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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