| |
| <!DOCTYPE html> |
| |
| <html lang="en"> |
| <head> |
| <meta charset="utf-8" /> |
| <meta name="viewport" content="width=device-width, initial-scale=1.0" /> |
| <title>link_directories — CMake 3.23.1 Documentation</title> |
| |
| <link rel="stylesheet" type="text/css" href="../_static/pygments.css" /> |
| <link rel="stylesheet" type="text/css" href="../_static/cmake.css" /> |
| |
| <script data-url_root="../" id="documentation_options" src="../_static/documentation_options.js"></script> |
| <script src="../_static/jquery.js"></script> |
| <script src="../_static/underscore.js"></script> |
| <script src="../_static/doctools.js"></script> |
| |
| <link rel="shortcut icon" href="../_static/cmake-favicon.ico"/> |
| <link rel="index" title="Index" href="../genindex.html" /> |
| <link rel="search" title="Search" href="../search.html" /> |
| <link rel="next" title="link_libraries" href="link_libraries.html" /> |
| <link rel="prev" title="install" href="install.html" /> |
| |
| |
| </head><body> |
| |
| <div class="related" role="navigation" aria-label="related navigation"> |
| <h3>Navigation</h3> |
| <ul> |
| <li class="right" style="margin-right: 10px"> |
| <a href="../genindex.html" title="General Index" |
| accesskey="I">index</a></li> |
| <li class="right" > |
| <a href="link_libraries.html" title="link_libraries" |
| accesskey="N">next</a> |</li> |
| <li class="right" > |
| <a href="install.html" title="install" |
| accesskey="P">previous</a> |</li> |
| <li> |
| <img src="../_static/cmake-logo-16.png" alt="" |
| style="vertical-align: middle; margin-top: -2px" /> |
| </li> |
| <li> |
| <a href="https://cmake.org/">CMake</a> » |
| </li> |
| <li> |
| <a href="../index.html">3.23.1 Documentation</a> » |
| </li> |
| |
| <li class="nav-item nav-item-1"><a href="../manual/cmake-commands.7.html" accesskey="U">cmake-commands(7)</a> »</li> |
| <li class="nav-item nav-item-this"><a href="">link_directories</a></li> |
| </ul> |
| </div> |
| |
| <div class="document"> |
| <div class="documentwrapper"> |
| <div class="bodywrapper"> |
| <div class="body" role="main"> |
| |
| <div class="section" id="link-directories"> |
| <span id="command:link_directories"></span><h1>link_directories<a class="headerlink" href="#link-directories" title="Permalink to this headline">ΒΆ</a></h1> |
| <p>Add directories in which the linker will look for libraries.</p> |
| <div class="highlight-cmake notranslate"><div class="highlight"><pre><span></span><span class="nf">link_directories(</span><span class="p">[</span><span class="no">AFTER</span><span class="p">|</span><span class="no">BEFORE</span><span class="p">]</span><span class="w"> </span><span class="nb">directory1</span><span class="w"> </span><span class="p">[</span><span class="nb">directory2</span><span class="w"> </span><span class="p">...]</span><span class="nf">)</span><span class="w"></span> |
| </pre></div> |
| </div> |
| <p>Adds the paths in which the linker should search for libraries. |
| Relative paths given to this command are interpreted as relative to |
| the current source directory, see <span class="target" id="index-0-policy:CMP0015"></span><a class="reference internal" href="../policy/CMP0015.html#policy:CMP0015" title="CMP0015"><code class="xref cmake cmake-policy docutils literal notranslate"><span class="pre">CMP0015</span></code></a>.</p> |
| <p>The command will apply only to targets created after it is called.</p> |
| <div class="versionadded"> |
| <p><span class="versionmodified added">New in version 3.13: </span>The directories are added to the <span class="target" id="index-0-prop_dir:LINK_DIRECTORIES"></span><a class="reference internal" href="../prop_dir/LINK_DIRECTORIES.html#prop_dir:LINK_DIRECTORIES" title="LINK_DIRECTORIES"><code class="xref cmake cmake-prop_dir docutils literal notranslate"><span class="pre">LINK_DIRECTORIES</span></code></a> directory |
| property for the current <code class="docutils literal notranslate"><span class="pre">CMakeLists.txt</span></code> file, converting relative |
| paths to absolute as needed. See the <span class="target" id="index-0-manual:cmake-buildsystem(7)"></span><a class="reference internal" href="../manual/cmake-buildsystem.7.html#manual:cmake-buildsystem(7)" title="cmake-buildsystem(7)"><code class="xref cmake cmake-manual docutils literal notranslate"><span class="pre">cmake-buildsystem(7)</span></code></a> |
| manual for more on defining buildsystem properties.</p> |
| </div> |
| <div class="versionadded"> |
| <p><span class="versionmodified added">New in version 3.13: </span>By default the directories specified are appended onto the current list of |
| directories. This default behavior can be changed by setting |
| <span class="target" id="index-0-variable:CMAKE_LINK_DIRECTORIES_BEFORE"></span><a class="reference internal" href="../variable/CMAKE_LINK_DIRECTORIES_BEFORE.html#variable:CMAKE_LINK_DIRECTORIES_BEFORE" title="CMAKE_LINK_DIRECTORIES_BEFORE"><code class="xref cmake cmake-variable docutils literal notranslate"><span class="pre">CMAKE_LINK_DIRECTORIES_BEFORE</span></code></a> to <code class="docutils literal notranslate"><span class="pre">ON</span></code>. By using |
| <code class="docutils literal notranslate"><span class="pre">AFTER</span></code> or <code class="docutils literal notranslate"><span class="pre">BEFORE</span></code> explicitly, you can select between appending and |
| prepending, independent of the default.</p> |
| </div> |
| <div class="versionadded"> |
| <p><span class="versionmodified added">New in version 3.13: </span>Arguments to <code class="docutils literal notranslate"><span class="pre">link_directories</span></code> may use "generator expressions" with |
| the syntax "$<...>". See the <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">cmake-generator-expressions(7)</span></code></a> |
| manual for available expressions.</p> |
| </div> |
| <div class="admonition note"> |
| <p class="admonition-title">Note</p> |
| <p>This command is rarely necessary and should be avoided where there are |
| other choices. Prefer to pass full absolute paths to libraries where |
| possible, since this ensures the correct library will always be linked. |
| The <span class="target" id="index-0-command:find_library"></span><a class="reference internal" href="find_library.html#command:find_library" title="find_library"><code class="xref cmake cmake-command docutils literal notranslate"><span class="pre">find_library()</span></code></a> command provides the full path, which can |
| generally be used directly in calls to <span class="target" id="index-0-command:target_link_libraries"></span><a class="reference internal" href="target_link_libraries.html#command:target_link_libraries" title="target_link_libraries"><code class="xref cmake cmake-command docutils literal notranslate"><span class="pre">target_link_libraries()</span></code></a>. |
| Situations where a library search path may be needed include:</p> |
| <ul class="simple"> |
| <li><p>Project generators like Xcode where the user can switch target |
| architecture at build time, but a full path to a library cannot |
| be used because it only provides one architecture (i.e. it is not |
| a universal binary).</p></li> |
| <li><p>Libraries may themselves have other private library dependencies |
| that expect to be found via <code class="docutils literal notranslate"><span class="pre">RPATH</span></code> mechanisms, but some linkers |
| are not able to fully decode those paths (e.g. due to the presence |
| of things like <code class="docutils literal notranslate"><span class="pre">$ORIGIN</span></code>).</p></li> |
| </ul> |
| <p>If a library search path must be provided, prefer to localize the effect |
| where possible by using the <span class="target" id="index-0-command:target_link_directories"></span><a class="reference internal" href="target_link_directories.html#command:target_link_directories" title="target_link_directories"><code class="xref cmake cmake-command docutils literal notranslate"><span class="pre">target_link_directories()</span></code></a> command |
| rather than <code class="docutils literal notranslate"><span class="pre">link_directories()</span></code>. The target-specific command can also |
| control how the search directories propagate to other dependent targets.</p> |
| </div> |
| </div> |
| |
| |
| <div class="clearer"></div> |
| </div> |
| </div> |
| </div> |
| <div class="sphinxsidebar" role="navigation" aria-label="main navigation"> |
| <div class="sphinxsidebarwrapper"> |
| <h4>Previous topic</h4> |
| <p class="topless"><a href="install.html" |
| title="previous chapter">install</a></p> |
| <h4>Next topic</h4> |
| <p class="topless"><a href="link_libraries.html" |
| title="next chapter">link_libraries</a></p> |
| <div role="note" aria-label="source link"> |
| <h3>This Page</h3> |
| <ul class="this-page-menu"> |
| <li><a href="../_sources/command/link_directories.rst.txt" |
| rel="nofollow">Show Source</a></li> |
| </ul> |
| </div> |
| <div id="searchbox" style="display: none" role="search"> |
| <h3 id="searchlabel">Quick search</h3> |
| <div class="searchformwrapper"> |
| <form class="search" action="../search.html" method="get"> |
| <input type="text" name="q" aria-labelledby="searchlabel" autocomplete="off" autocorrect="off" autocapitalize="off" spellcheck="false"/> |
| <input type="submit" value="Go" /> |
| </form> |
| </div> |
| </div> |
| <script>$('#searchbox').show(0);</script> |
| </div> |
| </div> |
| <div class="clearer"></div> |
| </div> |
| <div class="related" role="navigation" aria-label="related navigation"> |
| <h3>Navigation</h3> |
| <ul> |
| <li class="right" style="margin-right: 10px"> |
| <a href="../genindex.html" title="General Index" |
| >index</a></li> |
| <li class="right" > |
| <a href="link_libraries.html" title="link_libraries" |
| >next</a> |</li> |
| <li class="right" > |
| <a href="install.html" title="install" |
| >previous</a> |</li> |
| <li> |
| <img src="../_static/cmake-logo-16.png" alt="" |
| style="vertical-align: middle; margin-top: -2px" /> |
| </li> |
| <li> |
| <a href="https://cmake.org/">CMake</a> » |
| </li> |
| <li> |
| <a href="../index.html">3.23.1 Documentation</a> » |
| </li> |
| |
| <li class="nav-item nav-item-1"><a href="../manual/cmake-commands.7.html" >cmake-commands(7)</a> »</li> |
| <li class="nav-item nav-item-this"><a href="">link_directories</a></li> |
| </ul> |
| </div> |
| |
| <div class="footer" role="contentinfo"> |
| © Copyright 2000-2022 Kitware, Inc. and Contributors. |
| Created using <a href="https://www.sphinx-doc.org/">Sphinx</a> 4.1.2. |
| </div> |
| </body> |
| </html> |