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| <div class="section" id="cmp0065"> |
| <span id="policy:CMP0065"></span><h1>CMP0065<a class="headerlink" href="#cmp0065" title="Permalink to this headline">ΒΆ</a></h1> |
| <div class="versionadded"> |
| <p><span class="versionmodified added">New in version 3.4.</span></p> |
| </div> |
| <p>Do not add flags to export symbols from executables without |
| the <span class="target" id="index-0-prop_tgt:ENABLE_EXPORTS"></span><a class="reference internal" href="../prop_tgt/ENABLE_EXPORTS.html#prop_tgt:ENABLE_EXPORTS" title="ENABLE_EXPORTS"><code class="xref cmake cmake-prop_tgt docutils literal notranslate"><span class="pre">ENABLE_EXPORTS</span></code></a> target property.</p> |
| <p>CMake 3.3 and below, for historical reasons, always linked executables |
| on some platforms with flags like <code class="docutils literal notranslate"><span class="pre">-rdynamic</span></code> to export symbols from |
| the executables for use by any plugins they may load via <code class="docutils literal notranslate"><span class="pre">dlopen</span></code>. |
| CMake 3.4 and above prefer to do this only for executables that are |
| explicitly marked with the <span class="target" id="index-1-prop_tgt:ENABLE_EXPORTS"></span><a class="reference internal" href="../prop_tgt/ENABLE_EXPORTS.html#prop_tgt:ENABLE_EXPORTS" title="ENABLE_EXPORTS"><code class="xref cmake cmake-prop_tgt docutils literal notranslate"><span class="pre">ENABLE_EXPORTS</span></code></a> target property.</p> |
| <p>The <code class="docutils literal notranslate"><span class="pre">OLD</span></code> behavior of this policy is to always use the additional link |
| flags when linking executables regardless of the value of the |
| <span class="target" id="index-2-prop_tgt:ENABLE_EXPORTS"></span><a class="reference internal" href="../prop_tgt/ENABLE_EXPORTS.html#prop_tgt:ENABLE_EXPORTS" title="ENABLE_EXPORTS"><code class="xref cmake cmake-prop_tgt docutils literal notranslate"><span class="pre">ENABLE_EXPORTS</span></code></a> target property.</p> |
| <p>The <code class="docutils literal notranslate"><span class="pre">NEW</span></code> behavior of this policy is to only use the additional link |
| flags when linking executables if the <span class="target" id="index-3-prop_tgt:ENABLE_EXPORTS"></span><a class="reference internal" href="../prop_tgt/ENABLE_EXPORTS.html#prop_tgt:ENABLE_EXPORTS" title="ENABLE_EXPORTS"><code class="xref cmake cmake-prop_tgt docutils literal notranslate"><span class="pre">ENABLE_EXPORTS</span></code></a> target |
| property is set to <code class="docutils literal notranslate"><span class="pre">True</span></code>.</p> |
| <p>This policy was introduced in CMake version 3.4. Unlike most policies, |
| CMake version 3.23.1 does <em>not</em> warn by default when this policy |
| is not set and simply uses <code class="docutils literal notranslate"><span class="pre">OLD</span></code> behavior. See documentation of the |
| <span class="target" id="index-0-variable:CMAKE_POLICY_WARNING_CMP<NNNN>"></span><a class="reference internal" href="../variable/CMAKE_POLICY_WARNING_CMPNNNN.html#variable:CMAKE_POLICY_WARNING_CMP<NNNN>" title="CMAKE_POLICY_WARNING_CMP<NNNN>"><code class="xref cmake cmake-variable docutils literal notranslate"><span class="pre">CMAKE_POLICY_WARNING_CMP0065</span></code></a> |
| variable to control the warning.</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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