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| <div class="section" id="findpkgconfig"> |
| <span id="module:FindPkgConfig"></span><h1>FindPkgConfig<a class="headerlink" href="#findpkgconfig" title="Permalink to this headline">¶</a></h1> |
| <p>A <cite>pkg-config</cite> module for CMake.</p> |
| <p>Finds the <code class="docutils literal"><span class="pre">pkg-config</span></code> executable and add the |
| <span class="target" id="index-0-command:pkg_check_modules"></span><a class="reference internal" href="#command:pkg_check_modules" title="pkg_check_modules"><code class="xref cmake cmake-command docutils literal"><span class="pre">pkg_check_modules()</span></code></a> and <span class="target" id="index-0-command:pkg_search_module"></span><a class="reference internal" href="#command:pkg_search_module" title="pkg_search_module"><code class="xref cmake cmake-command docutils literal"><span class="pre">pkg_search_module()</span></code></a> |
| commands.</p> |
| <p>In order to find the <code class="docutils literal"><span class="pre">pkg-config</span></code> executable, it uses the |
| <span class="target" id="index-0-variable:PKG_CONFIG_EXECUTABLE"></span><a class="reference internal" href="#variable:PKG_CONFIG_EXECUTABLE" title="PKG_CONFIG_EXECUTABLE"><code class="xref cmake cmake-variable docutils literal"><span class="pre">PKG_CONFIG_EXECUTABLE</span></code></a> variable or the <code class="docutils literal"><span class="pre">PKG_CONFIG</span></code> |
| environment variable first.</p> |
| <dl class="command"> |
| <dt id="command:pkg_get_variable"> |
| <code class="descname">pkg_get_variable</code><a class="headerlink" href="#command:pkg_get_variable" title="Permalink to this definition">¶</a></dt> |
| <dd><p>Retrieves the value of a variable from a package:</p> |
| <div class="highlight-default"><div class="highlight"><pre><span></span><span class="n">pkg_get_variable</span><span class="p">(</span><span class="o"><</span><span class="n">RESULT</span><span class="o">></span> <span class="o"><</span><span class="n">MODULE</span><span class="o">></span> <span class="o"><</span><span class="n">VARIABLE</span><span class="o">></span><span class="p">)</span> |
| </pre></div> |
| </div> |
| <p>For example:</p> |
| <div class="highlight-cmake"><div class="highlight"><pre><span></span><span class="nb">pkg_get_variable</span><span class="p">(</span><span class="s">GI_GIRDIR</span> <span class="s">gobject-introspection-1.0</span> <span class="s">girdir</span><span class="p">)</span> |
| </pre></div> |
| </div> |
| </dd></dl> |
| |
| <dl class="command"> |
| <dt id="command:pkg_check_modules"> |
| <code class="descname">pkg_check_modules</code><a class="headerlink" href="#command:pkg_check_modules" title="Permalink to this definition">¶</a></dt> |
| <dd><p>Checks for all the given modules.</p> |
| <div class="highlight-default"><div class="highlight"><pre><span></span><span class="n">pkg_check_modules</span><span class="p">(</span><span class="o"><</span><span class="n">PREFIX</span><span class="o">></span> <span class="p">[</span><span class="n">REQUIRED</span><span class="p">]</span> <span class="p">[</span><span class="n">QUIET</span><span class="p">]</span> |
| <span class="p">[</span><span class="n">NO_CMAKE_PATH</span><span class="p">]</span> <span class="p">[</span><span class="n">NO_CMAKE_ENVIRONMENT_PATH</span><span class="p">]</span> |
| <span class="p">[</span><span class="n">IMPORTED_TARGET</span><span class="p">]</span> |
| <span class="o"><</span><span class="n">MODULE</span><span class="o">></span> <span class="p">[</span><span class="o"><</span><span class="n">MODULE</span><span class="o">></span><span class="p">]</span><span class="o">*</span><span class="p">)</span> |
| </pre></div> |
| </div> |
| <p>When the <code class="docutils literal"><span class="pre">REQUIRED</span></code> argument was set, macros will fail with an error |
| when module(s) could not be found.</p> |
| <p>When the <code class="docutils literal"><span class="pre">QUIET</span></code> argument is set, no status messages will be printed.</p> |
| <p>By default, if <span class="target" id="index-0-variable:CMAKE_MINIMUM_REQUIRED_VERSION"></span><a class="reference internal" href="../variable/CMAKE_MINIMUM_REQUIRED_VERSION.html#variable:CMAKE_MINIMUM_REQUIRED_VERSION" title="CMAKE_MINIMUM_REQUIRED_VERSION"><code class="xref cmake cmake-variable docutils literal"><span class="pre">CMAKE_MINIMUM_REQUIRED_VERSION</span></code></a> is 3.1 or |
| later, or if <span class="target" id="index-0-variable:PKG_CONFIG_USE_CMAKE_PREFIX_PATH"></span><a class="reference internal" href="#variable:PKG_CONFIG_USE_CMAKE_PREFIX_PATH" title="PKG_CONFIG_USE_CMAKE_PREFIX_PATH"><code class="xref cmake cmake-variable docutils literal"><span class="pre">PKG_CONFIG_USE_CMAKE_PREFIX_PATH</span></code></a> is set, the |
| <span class="target" id="index-0-variable:CMAKE_PREFIX_PATH"></span><a class="reference internal" href="../variable/CMAKE_PREFIX_PATH.html#variable:CMAKE_PREFIX_PATH" title="CMAKE_PREFIX_PATH"><code class="xref cmake cmake-variable docutils literal"><span class="pre">CMAKE_PREFIX_PATH</span></code></a>, <span class="target" id="index-0-variable:CMAKE_FRAMEWORK_PATH"></span><a class="reference internal" href="../variable/CMAKE_FRAMEWORK_PATH.html#variable:CMAKE_FRAMEWORK_PATH" title="CMAKE_FRAMEWORK_PATH"><code class="xref cmake cmake-variable docutils literal"><span class="pre">CMAKE_FRAMEWORK_PATH</span></code></a>, and |
| <span class="target" id="index-0-variable:CMAKE_APPBUNDLE_PATH"></span><a class="reference internal" href="../variable/CMAKE_APPBUNDLE_PATH.html#variable:CMAKE_APPBUNDLE_PATH" title="CMAKE_APPBUNDLE_PATH"><code class="xref cmake cmake-variable docutils literal"><span class="pre">CMAKE_APPBUNDLE_PATH</span></code></a> cache and environment variables will |
| be added to <code class="docutils literal"><span class="pre">pkg-config</span></code> search path. |
| The <code class="docutils literal"><span class="pre">NO_CMAKE_PATH</span></code> and <code class="docutils literal"><span class="pre">NO_CMAKE_ENVIRONMENT_PATH</span></code> arguments |
| disable this behavior for the cache variables and the environment |
| variables, respectively. |
| The <code class="docutils literal"><span class="pre">IMPORTED_TARGET</span></code> argument will create an imported target named |
| PkgConfig::<PREFIX>> that can be passed directly as an argument to |
| <span class="target" id="index-0-command:target_link_libraries"></span><a class="reference internal" href="../command/target_link_libraries.html#command:target_link_libraries" title="target_link_libraries"><code class="xref cmake cmake-command docutils literal"><span class="pre">target_link_libraries()</span></code></a>.</p> |
| <p>It sets the following variables:</p> |
| <div class="highlight-default"><div class="highlight"><pre><span></span><span class="n">PKG_CONFIG_FOUND</span> <span class="o">...</span> <span class="k">if</span> <span class="n">pkg</span><span class="o">-</span><span class="n">config</span> <span class="n">executable</span> <span class="n">was</span> <span class="n">found</span> |
| <span class="n">PKG_CONFIG_EXECUTABLE</span> <span class="o">...</span> <span class="n">pathname</span> <span class="n">of</span> <span class="n">the</span> <span class="n">pkg</span><span class="o">-</span><span class="n">config</span> <span class="n">program</span> |
| <span class="n">PKG_CONFIG_VERSION_STRING</span> <span class="o">...</span> <span class="n">the</span> <span class="n">version</span> <span class="n">of</span> <span class="n">the</span> <span class="n">pkg</span><span class="o">-</span><span class="n">config</span> <span class="n">program</span> <span class="n">found</span> |
| <span class="p">(</span><span class="n">since</span> <span class="n">CMake</span> <span class="mf">2.8</span><span class="o">.</span><span class="mi">8</span><span class="p">)</span> |
| </pre></div> |
| </div> |
| <p>For the following variables two sets of values exist; first one is the |
| common one and has the given PREFIX. The second set contains flags |
| which are given out when <code class="docutils literal"><span class="pre">pkg-config</span></code> was called with the <code class="docutils literal"><span class="pre">--static</span></code> |
| option.</p> |
| <div class="highlight-default"><div class="highlight"><pre><span></span><span class="o"><</span><span class="n">XPREFIX</span><span class="o">></span><span class="n">_FOUND</span> <span class="o">...</span> <span class="nb">set</span> <span class="n">to</span> <span class="mi">1</span> <span class="k">if</span> <span class="n">module</span><span class="p">(</span><span class="n">s</span><span class="p">)</span> <span class="n">exist</span> |
| <span class="o"><</span><span class="n">XPREFIX</span><span class="o">></span><span class="n">_LIBRARIES</span> <span class="o">...</span> <span class="n">only</span> <span class="n">the</span> <span class="n">libraries</span> <span class="p">(</span><span class="n">w</span><span class="o">/</span><span class="n">o</span> <span class="n">the</span> <span class="s1">'-l'</span><span class="p">)</span> |
| <span class="o"><</span><span class="n">XPREFIX</span><span class="o">></span><span class="n">_LIBRARY_DIRS</span> <span class="o">...</span> <span class="n">the</span> <span class="n">paths</span> <span class="n">of</span> <span class="n">the</span> <span class="n">libraries</span> <span class="p">(</span><span class="n">w</span><span class="o">/</span><span class="n">o</span> <span class="n">the</span> <span class="s1">'-L'</span><span class="p">)</span> |
| <span class="o"><</span><span class="n">XPREFIX</span><span class="o">></span><span class="n">_LDFLAGS</span> <span class="o">...</span> <span class="nb">all</span> <span class="n">required</span> <span class="n">linker</span> <span class="n">flags</span> |
| <span class="o"><</span><span class="n">XPREFIX</span><span class="o">></span><span class="n">_LDFLAGS_OTHER</span> <span class="o">...</span> <span class="nb">all</span> <span class="n">other</span> <span class="n">linker</span> <span class="n">flags</span> |
| <span class="o"><</span><span class="n">XPREFIX</span><span class="o">></span><span class="n">_INCLUDE_DIRS</span> <span class="o">...</span> <span class="n">the</span> <span class="s1">'-I'</span> <span class="n">preprocessor</span> <span class="n">flags</span> <span class="p">(</span><span class="n">w</span><span class="o">/</span><span class="n">o</span> <span class="n">the</span> <span class="s1">'-I'</span><span class="p">)</span> |
| <span class="o"><</span><span class="n">XPREFIX</span><span class="o">></span><span class="n">_CFLAGS</span> <span class="o">...</span> <span class="nb">all</span> <span class="n">required</span> <span class="n">cflags</span> |
| <span class="o"><</span><span class="n">XPREFIX</span><span class="o">></span><span class="n">_CFLAGS_OTHER</span> <span class="o">...</span> <span class="n">the</span> <span class="n">other</span> <span class="n">compiler</span> <span class="n">flags</span> |
| </pre></div> |
| </div> |
| <div class="highlight-default"><div class="highlight"><pre><span></span><span class="o"><</span><span class="n">XPREFIX</span><span class="o">></span> <span class="o">=</span> <span class="o"><</span><span class="n">PREFIX</span><span class="o">></span> <span class="k">for</span> <span class="n">common</span> <span class="n">case</span> |
| <span class="o"><</span><span class="n">XPREFIX</span><span class="o">></span> <span class="o">=</span> <span class="o"><</span><span class="n">PREFIX</span><span class="o">></span><span class="n">_STATIC</span> <span class="k">for</span> <span class="n">static</span> <span class="n">linking</span> |
| </pre></div> |
| </div> |
| <p>There are some special variables whose prefix depends on the count of |
| given modules. When there is only one module, <PREFIX> stays |
| unchanged. When there are multiple modules, the prefix will be |
| changed to <PREFIX>_<MODNAME>:</p> |
| <div class="highlight-default"><div class="highlight"><pre><span></span><span class="o"><</span><span class="n">XPREFIX</span><span class="o">></span><span class="n">_VERSION</span> <span class="o">...</span> <span class="n">version</span> <span class="n">of</span> <span class="n">the</span> <span class="n">module</span> |
| <span class="o"><</span><span class="n">XPREFIX</span><span class="o">></span><span class="n">_PREFIX</span> <span class="o">...</span> <span class="n">prefix</span><span class="o">-</span><span class="n">directory</span> <span class="n">of</span> <span class="n">the</span> <span class="n">module</span> |
| <span class="o"><</span><span class="n">XPREFIX</span><span class="o">></span><span class="n">_INCLUDEDIR</span> <span class="o">...</span> <span class="n">include</span><span class="o">-</span><span class="nb">dir</span> <span class="n">of</span> <span class="n">the</span> <span class="n">module</span> |
| <span class="o"><</span><span class="n">XPREFIX</span><span class="o">></span><span class="n">_LIBDIR</span> <span class="o">...</span> <span class="n">lib</span><span class="o">-</span><span class="nb">dir</span> <span class="n">of</span> <span class="n">the</span> <span class="n">module</span> |
| </pre></div> |
| </div> |
| <div class="highlight-default"><div class="highlight"><pre><span></span><span class="o"><</span><span class="n">XPREFIX</span><span class="o">></span> <span class="o">=</span> <span class="o"><</span><span class="n">PREFIX</span><span class="o">></span> <span class="n">when</span> <span class="o">|</span><span class="n">MODULES</span><span class="o">|</span> <span class="o">==</span> <span class="mi">1</span><span class="p">,</span> <span class="k">else</span> |
| <span class="o"><</span><span class="n">XPREFIX</span><span class="o">></span> <span class="o">=</span> <span class="o"><</span><span class="n">PREFIX</span><span class="o">></span><span class="n">_</span><span class="o"><</span><span class="n">MODNAME</span><span class="o">></span> |
| </pre></div> |
| </div> |
| <p>A <MODULE> parameter can have the following formats:</p> |
| <div class="highlight-default"><div class="highlight"><pre><span></span><span class="p">{</span><span class="n">MODNAME</span><span class="p">}</span> <span class="o">...</span> <span class="n">matches</span> <span class="nb">any</span> <span class="n">version</span> |
| <span class="p">{</span><span class="n">MODNAME</span><span class="p">}</span><span class="o">>=</span><span class="p">{</span><span class="n">VERSION</span><span class="p">}</span> <span class="o">...</span> <span class="n">at</span> <span class="n">least</span> <span class="n">version</span> <span class="o"><</span><span class="n">VERSION</span><span class="o">></span> <span class="ow">is</span> <span class="n">required</span> |
| <span class="p">{</span><span class="n">MODNAME</span><span class="p">}</span><span class="o">=</span><span class="p">{</span><span class="n">VERSION</span><span class="p">}</span> <span class="o">...</span> <span class="n">exactly</span> <span class="n">version</span> <span class="o"><</span><span class="n">VERSION</span><span class="o">></span> <span class="ow">is</span> <span class="n">required</span> |
| <span class="p">{</span><span class="n">MODNAME</span><span class="p">}</span><span class="o"><=</span><span class="p">{</span><span class="n">VERSION</span><span class="p">}</span> <span class="o">...</span> <span class="n">modules</span> <span class="n">must</span> <span class="ow">not</span> <span class="n">be</span> <span class="n">newer</span> <span class="n">than</span> <span class="o"><</span><span class="n">VERSION</span><span class="o">></span> |
| </pre></div> |
| </div> |
| <p>Examples</p> |
| <div class="highlight-cmake"><div class="highlight"><pre><span></span><span class="nb">pkg_check_modules</span> <span class="p">(</span><span class="s">GLIB2</span> <span class="s">glib-2.0</span><span class="p">)</span> |
| </pre></div> |
| </div> |
| <div class="highlight-cmake"><div class="highlight"><pre><span></span><span class="nb">pkg_check_modules</span> <span class="p">(</span><span class="s">GLIB2</span> <span class="s">glib-2.0>=2.10</span><span class="p">)</span> |
| </pre></div> |
| </div> |
| <p>Requires at least version 2.10 of glib2 and defines e.g. |
| <code class="docutils literal"><span class="pre">GLIB2_VERSION=2.10.3</span></code></p> |
| <div class="highlight-cmake"><div class="highlight"><pre><span></span><span class="nb">pkg_check_modules</span> <span class="p">(</span><span class="s">FOO</span> <span class="s">glib-2.0>=2.10</span> <span class="s">gtk+-2.0</span><span class="p">)</span> |
| </pre></div> |
| </div> |
| <p>Requires both glib2 and gtk2, and defines e.g. |
| <code class="docutils literal"><span class="pre">FOO_glib-2.0_VERSION=2.10.3</span></code> and <code class="docutils literal"><span class="pre">FOO_gtk+-2.0_VERSION=2.8.20</span></code></p> |
| <div class="highlight-cmake"><div class="highlight"><pre><span></span><span class="nb">pkg_check_modules</span> <span class="p">(</span><span class="s">XRENDER</span> <span class="s">REQUIRED</span> <span class="s">xrender</span><span class="p">)</span> |
| </pre></div> |
| </div> |
| <p>Defines for example:</p> |
| <div class="highlight-default"><div class="highlight"><pre><span></span>XRENDER_LIBRARIES=Xrender;X11`` |
| XRENDER_STATIC_LIBRARIES=Xrender;X11;pthread;Xau;Xdmcp |
| </pre></div> |
| </div> |
| </dd></dl> |
| |
| <dl class="command"> |
| <dt id="command:pkg_search_module"> |
| <code class="descname">pkg_search_module</code><a class="headerlink" href="#command:pkg_search_module" title="Permalink to this definition">¶</a></dt> |
| <dd><p>Same as <span class="target" id="index-1-command:pkg_check_modules"></span><a class="reference internal" href="#command:pkg_check_modules" title="pkg_check_modules"><code class="xref cmake cmake-command docutils literal"><span class="pre">pkg_check_modules()</span></code></a>, but instead it checks for given |
| modules and uses the first working one.</p> |
| <div class="highlight-default"><div class="highlight"><pre><span></span><span class="n">pkg_search_module</span><span class="p">(</span><span class="o"><</span><span class="n">PREFIX</span><span class="o">></span> <span class="p">[</span><span class="n">REQUIRED</span><span class="p">]</span> <span class="p">[</span><span class="n">QUIET</span><span class="p">]</span> |
| <span class="p">[</span><span class="n">NO_CMAKE_PATH</span><span class="p">]</span> <span class="p">[</span><span class="n">NO_CMAKE_ENVIRONMENT_PATH</span><span class="p">]</span> |
| <span class="p">[</span><span class="n">IMPORTED_TARGET</span><span class="p">]</span> |
| <span class="o"><</span><span class="n">MODULE</span><span class="o">></span> <span class="p">[</span><span class="o"><</span><span class="n">MODULE</span><span class="o">></span><span class="p">]</span><span class="o">*</span><span class="p">)</span> |
| </pre></div> |
| </div> |
| <p>Examples</p> |
| <div class="highlight-cmake"><div class="highlight"><pre><span></span><span class="nb">pkg_search_module</span> <span class="p">(</span><span class="s">BAR</span> <span class="s">libxml-2.0</span> <span class="s">libxml2</span> <span class="s">libxml>=2</span><span class="p">)</span> |
| </pre></div> |
| </div> |
| </dd></dl> |
| |
| <dl class="variable"> |
| <dt id="variable:PKG_CONFIG_EXECUTABLE"> |
| <code class="descname">PKG_CONFIG_EXECUTABLE</code><a class="headerlink" href="#variable:PKG_CONFIG_EXECUTABLE" title="Permalink to this definition">¶</a></dt> |
| <dd><p>Path to the pkg-config executable.</p> |
| </dd></dl> |
| |
| <dl class="variable"> |
| <dt id="variable:PKG_CONFIG_USE_CMAKE_PREFIX_PATH"> |
| <code class="descname">PKG_CONFIG_USE_CMAKE_PREFIX_PATH</code><a class="headerlink" href="#variable:PKG_CONFIG_USE_CMAKE_PREFIX_PATH" title="Permalink to this definition">¶</a></dt> |
| <dd><p>Whether <span class="target" id="index-2-command:pkg_check_modules"></span><a class="reference internal" href="#command:pkg_check_modules" title="pkg_check_modules"><code class="xref cmake cmake-command docutils literal"><span class="pre">pkg_check_modules()</span></code></a> and <span class="target" id="index-1-command:pkg_search_module"></span><a class="reference internal" href="#command:pkg_search_module" title="pkg_search_module"><code class="xref cmake cmake-command docutils literal"><span class="pre">pkg_search_module()</span></code></a> |
| should add the paths in <span class="target" id="index-1-variable:CMAKE_PREFIX_PATH"></span><a class="reference internal" href="../variable/CMAKE_PREFIX_PATH.html#variable:CMAKE_PREFIX_PATH" title="CMAKE_PREFIX_PATH"><code class="xref cmake cmake-variable docutils literal"><span class="pre">CMAKE_PREFIX_PATH</span></code></a>, |
| <span class="target" id="index-1-variable:CMAKE_FRAMEWORK_PATH"></span><a class="reference internal" href="../variable/CMAKE_FRAMEWORK_PATH.html#variable:CMAKE_FRAMEWORK_PATH" title="CMAKE_FRAMEWORK_PATH"><code class="xref cmake cmake-variable docutils literal"><span class="pre">CMAKE_FRAMEWORK_PATH</span></code></a>, and <span class="target" id="index-1-variable:CMAKE_APPBUNDLE_PATH"></span><a class="reference internal" href="../variable/CMAKE_APPBUNDLE_PATH.html#variable:CMAKE_APPBUNDLE_PATH" title="CMAKE_APPBUNDLE_PATH"><code class="xref cmake cmake-variable docutils literal"><span class="pre">CMAKE_APPBUNDLE_PATH</span></code></a> |
| cache and environment variables to <code class="docutils literal"><span class="pre">pkg-config</span></code> search path.</p> |
| <p>If this variable is not set, this behavior is enabled by default if |
| <span class="target" id="index-1-variable:CMAKE_MINIMUM_REQUIRED_VERSION"></span><a class="reference internal" href="../variable/CMAKE_MINIMUM_REQUIRED_VERSION.html#variable:CMAKE_MINIMUM_REQUIRED_VERSION" title="CMAKE_MINIMUM_REQUIRED_VERSION"><code class="xref cmake cmake-variable docutils literal"><span class="pre">CMAKE_MINIMUM_REQUIRED_VERSION</span></code></a> is 3.1 or later, disabled |
| otherwise.</p> |
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