| |
| <!DOCTYPE html> |
| |
| <html lang="en"> |
| <head> |
| <meta charset="utf-8" /> |
| <meta name="viewport" content="width=device-width, initial-scale=1.0" /> |
| <title>CMP0008 — 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="CMP0007" href="CMP0007.html" /> |
| <link rel="prev" title="CMP0009" href="CMP0009.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="CMP0007.html" title="CMP0007" |
| accesskey="N">next</a> |</li> |
| <li class="right" > |
| <a href="CMP0009.html" title="CMP0009" |
| 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-policies.7.html" accesskey="U">cmake-policies(7)</a> »</li> |
| <li class="nav-item nav-item-this"><a href="">CMP0008</a></li> |
| </ul> |
| </div> |
| |
| <div class="document"> |
| <div class="documentwrapper"> |
| <div class="bodywrapper"> |
| <div class="body" role="main"> |
| |
| <div class="section" id="cmp0008"> |
| <span id="policy:CMP0008"></span><h1>CMP0008<a class="headerlink" href="#cmp0008" title="Permalink to this headline">ΒΆ</a></h1> |
| <p>Libraries linked by full-path must have a valid library file name.</p> |
| <p>In CMake 2.4 and below it is possible to write code like</p> |
| <div class="highlight-none notranslate"><div class="highlight"><pre><span></span>target_link_libraries(myexe /full/path/to/somelib) |
| </pre></div> |
| </div> |
| <p>where <code class="docutils literal notranslate"><span class="pre">somelib</span></code> is supposed to be a valid library file name such as |
| <code class="docutils literal notranslate"><span class="pre">libsomelib.a</span></code> or <code class="docutils literal notranslate"><span class="pre">somelib.lib</span></code>. For Makefile generators this |
| produces an error at build time because the dependency on the full |
| path cannot be found. For <a class="reference internal" href="../manual/cmake-generators.7.html#visual-studio-generators"><span class="std std-ref">Visual Studio Generators</span></a> IDE |
| and <span class="target" id="index-0-generator:Xcode"></span><a class="reference internal" href="../generator/Xcode.html#generator:Xcode" title="Xcode"><code class="xref cmake cmake-generator docutils literal notranslate"><span class="pre">Xcode</span></code></a> generators this used to |
| work by accident because CMake would always split off the library |
| directory and ask the linker to search for the library by name |
| (<code class="docutils literal notranslate"><span class="pre">-lsomelib</span></code> or <code class="docutils literal notranslate"><span class="pre">somelib.lib</span></code>). Despite the failure with Makefiles, some |
| projects have code like this and build only with Visual Studio and/or Xcode. |
| This version of CMake prefers to pass the full path directly to the |
| native build tool, which will fail in this case because it does not |
| name a valid library file.</p> |
| <p>This policy determines what to do with full paths that do not appear |
| to name a valid library file. The <code class="docutils literal notranslate"><span class="pre">OLD</span></code> behavior for this policy is to |
| split the library name from the path and ask the linker to search for |
| it. The <code class="docutils literal notranslate"><span class="pre">NEW</span></code> behavior for this policy is to trust the given path and |
| pass it directly to the native build tool unchanged.</p> |
| <p>This policy was introduced in CMake version 2.6.1. 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> |
| </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="CMP0009.html" |
| title="previous chapter">CMP0009</a></p> |
| <h4>Next topic</h4> |
| <p class="topless"><a href="CMP0007.html" |
| title="next chapter">CMP0007</a></p> |
| <div role="note" aria-label="source link"> |
| <h3>This Page</h3> |
| <ul class="this-page-menu"> |
| <li><a href="../_sources/policy/CMP0008.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="CMP0007.html" title="CMP0007" |
| >next</a> |</li> |
| <li class="right" > |
| <a href="CMP0009.html" title="CMP0009" |
| >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-policies.7.html" >cmake-policies(7)</a> »</li> |
| <li class="nav-item nav-item-this"><a href="">CMP0008</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> |