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| <span id="policy:CMP0063"></span><h1>CMP0063<a class="headerlink" href="#cmp0063" title="Permalink to this headline">ΒΆ</a></h1> |
| <div class="versionadded"> |
| <p><span class="versionmodified added">New in version 3.3.</span></p> |
| </div> |
| <p>Honor visibility properties for all target types.</p> |
| <p>The <span class="target" id="index-0-prop_tgt:<LANG>_VISIBILITY_PRESET"></span><a class="reference internal" href="../prop_tgt/LANG_VISIBILITY_PRESET.html#prop_tgt:<LANG>_VISIBILITY_PRESET" title="<LANG>_VISIBILITY_PRESET"><code class="xref cmake cmake-prop_tgt docutils literal notranslate"><span class="pre"><LANG>_VISIBILITY_PRESET</span></code></a> and |
| <span class="target" id="index-0-prop_tgt:VISIBILITY_INLINES_HIDDEN"></span><a class="reference internal" href="../prop_tgt/VISIBILITY_INLINES_HIDDEN.html#prop_tgt:VISIBILITY_INLINES_HIDDEN" title="VISIBILITY_INLINES_HIDDEN"><code class="xref cmake cmake-prop_tgt docutils literal notranslate"><span class="pre">VISIBILITY_INLINES_HIDDEN</span></code></a> target properties affect visibility |
| of symbols during dynamic linking. When first introduced these properties |
| affected compilation of sources only in shared libraries, module libraries, |
| and executables with 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> property set. This |
| was sufficient for the basic use cases of shared libraries and executables |
| with plugins. However, some sources may be compiled as part of static |
| libraries or object libraries and then linked into a shared library later. |
| CMake 3.3 and above prefer to honor these properties for sources compiled |
| in all target types. This policy preserves compatibility for projects |
| expecting the properties to work only for some target types.</p> |
| <p>The <code class="docutils literal notranslate"><span class="pre">OLD</span></code> behavior for this policy is to ignore the visibility properties |
| for static libraries, object libraries, and executables without exports. |
| The <code class="docutils literal notranslate"><span class="pre">NEW</span></code> behavior for this policy is to honor the visibility properties |
| for all target types.</p> |
| <p>This policy was introduced in CMake version 3.3. 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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