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| <span id="policy:CMP0051"></span><h1>CMP0051<a class="headerlink" href="#cmp0051" title="Permalink to this headline">ΒΆ</a></h1> |
| <div class="versionadded"> |
| <p><span class="versionmodified added">New in version 3.1.</span></p> |
| </div> |
| <p>List <span class="target" id="index-0-genex:TARGET_OBJECTS"></span><a class="reference internal" href="../manual/cmake-generator-expressions.7.html#genex:TARGET_OBJECTS" title="TARGET_OBJECTS"><code class="xref cmake cmake-genex docutils literal notranslate"><span class="pre">TARGET_OBJECTS</span></code></a> in SOURCES target property.</p> |
| <p>CMake 3.0 and lower did not include the <code class="docutils literal notranslate"><span class="pre">TARGET_OBJECTS</span></code> |
| <span class="target" id="index-0-manual:cmake-generator-expressions(7)"></span><a class="reference internal" href="../manual/cmake-generator-expressions.7.html#manual:cmake-generator-expressions(7)" title="cmake-generator-expressions(7)"><code class="xref cmake cmake-manual docutils literal notranslate"><span class="pre">generator</span> <span class="pre">expression</span></code></a> when |
| returning the <span class="target" id="index-0-prop_tgt:SOURCES"></span><a class="reference internal" href="../prop_tgt/SOURCES.html#prop_tgt:SOURCES" title="SOURCES"><code class="xref cmake cmake-prop_tgt docutils literal notranslate"><span class="pre">SOURCES</span></code></a> target property.</p> |
| <p>Configure-time CMake code is not able to handle generator expressions. If |
| using the <span class="target" id="index-1-prop_tgt:SOURCES"></span><a class="reference internal" href="../prop_tgt/SOURCES.html#prop_tgt:SOURCES" title="SOURCES"><code class="xref cmake cmake-prop_tgt docutils literal notranslate"><span class="pre">SOURCES</span></code></a> target property at configure time, it may be |
| necessary to first remove generator expressions using the |
| <span class="target" id="index-0-command:string"></span><a class="reference internal" href="../command/string.html#command:string" title="string"><code class="xref cmake cmake-command docutils literal notranslate"><span class="pre">string(GENEX_STRIP)</span></code></a> command. Generate-time CMake code such as |
| <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> can handle the content without stripping.</p> |
| <p>The <code class="docutils literal notranslate"><span class="pre">OLD</span></code> behavior for this policy is to omit <code class="docutils literal notranslate"><span class="pre">TARGET_OBJECTS</span></code> |
| expressions from the <span class="target" id="index-2-prop_tgt:SOURCES"></span><a class="reference internal" href="../prop_tgt/SOURCES.html#prop_tgt:SOURCES" title="SOURCES"><code class="xref cmake cmake-prop_tgt docutils literal notranslate"><span class="pre">SOURCES</span></code></a> target property. The <code class="docutils literal notranslate"><span class="pre">NEW</span></code> |
| behavior for this policy is to include <code class="docutils literal notranslate"><span class="pre">TARGET_OBJECTS</span></code> expressions |
| in the output.</p> |
| <p>This policy was introduced in CMake version 3.1. |
| 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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