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| <div class="section" id="cmake-install-prefix"> |
| <span id="variable:CMAKE_INSTALL_PREFIX"></span><h1>CMAKE_INSTALL_PREFIX<a class="headerlink" href="#cmake-install-prefix" title="Permalink to this headline">ΒΆ</a></h1> |
| <p>Install directory used by <span class="target" id="index-0-command:install"></span><a class="reference internal" href="../command/install.html#command:install" title="install"><code class="xref cmake cmake-command docutils literal"><span class="pre">install()</span></code></a>.</p> |
| <p>If <code class="docutils literal"><span class="pre">make</span> <span class="pre">install</span></code> is invoked or <code class="docutils literal"><span class="pre">INSTALL</span></code> is built, this directory is |
| prepended onto all install directories. This variable defaults to |
| <code class="docutils literal"><span class="pre">/usr/local</span></code> on UNIX and <code class="docutils literal"><span class="pre">c:/Program</span> <span class="pre">Files/${PROJECT_NAME}</span></code> on Windows. |
| See <span class="target" id="index-0-variable:CMAKE_INSTALL_PREFIX_INITIALIZED_TO_DEFAULT"></span><a class="reference internal" href="CMAKE_INSTALL_PREFIX_INITIALIZED_TO_DEFAULT.html#variable:CMAKE_INSTALL_PREFIX_INITIALIZED_TO_DEFAULT" title="CMAKE_INSTALL_PREFIX_INITIALIZED_TO_DEFAULT"><code class="xref cmake cmake-variable docutils literal"><span class="pre">CMAKE_INSTALL_PREFIX_INITIALIZED_TO_DEFAULT</span></code></a> for how a |
| project might choose its own default.</p> |
| <p>On UNIX one can use the <code class="docutils literal"><span class="pre">DESTDIR</span></code> mechanism in order to relocate the |
| whole installation. <code class="docutils literal"><span class="pre">DESTDIR</span></code> means DESTination DIRectory. It is |
| commonly used by makefile users in order to install software at |
| non-default location. It is usually invoked like this:</p> |
| <div class="highlight-default"><div class="highlight"><pre><span></span><span class="n">make</span> <span class="n">DESTDIR</span><span class="o">=/</span><span class="n">home</span><span class="o">/</span><span class="n">john</span> <span class="n">install</span> |
| </pre></div> |
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| <p>which will install the concerned software using the installation |
| prefix, e.g. <code class="docutils literal"><span class="pre">/usr/local</span></code> prepended with the <code class="docutils literal"><span class="pre">DESTDIR</span></code> value which |
| finally gives <code class="docutils literal"><span class="pre">/home/john/usr/local</span></code>.</p> |
| <p>WARNING: <code class="docutils literal"><span class="pre">DESTDIR</span></code> may not be used on Windows because installation |
| prefix usually contains a drive letter like in <code class="docutils literal"><span class="pre">C:/Program</span> <span class="pre">Files</span></code> |
| which cannot be prepended with some other prefix.</p> |
| <p>The installation prefix is also added to <span class="target" id="index-0-variable:CMAKE_SYSTEM_PREFIX_PATH"></span><a class="reference internal" href="CMAKE_SYSTEM_PREFIX_PATH.html#variable:CMAKE_SYSTEM_PREFIX_PATH" title="CMAKE_SYSTEM_PREFIX_PATH"><code class="xref cmake cmake-variable docutils literal"><span class="pre">CMAKE_SYSTEM_PREFIX_PATH</span></code></a> |
| so that <span class="target" id="index-0-command:find_package"></span><a class="reference internal" href="../command/find_package.html#command:find_package" title="find_package"><code class="xref cmake cmake-command docutils literal"><span class="pre">find_package()</span></code></a>, <span class="target" id="index-0-command:find_program"></span><a class="reference internal" href="../command/find_program.html#command:find_program" title="find_program"><code class="xref cmake cmake-command docutils literal"><span class="pre">find_program()</span></code></a>, |
| <span class="target" id="index-0-command:find_library"></span><a class="reference internal" href="../command/find_library.html#command:find_library" title="find_library"><code class="xref cmake cmake-command docutils literal"><span class="pre">find_library()</span></code></a>, <span class="target" id="index-0-command:find_path"></span><a class="reference internal" href="../command/find_path.html#command:find_path" title="find_path"><code class="xref cmake cmake-command docutils literal"><span class="pre">find_path()</span></code></a>, and <span class="target" id="index-0-command:find_file"></span><a class="reference internal" href="../command/find_file.html#command:find_file" title="find_file"><code class="xref cmake cmake-command docutils literal"><span class="pre">find_file()</span></code></a> |
| will search the prefix for other software.</p> |
| <div class="admonition note"> |
| <p class="first admonition-title">Note</p> |
| <p class="last">Use the <span class="target" id="index-0-module:GNUInstallDirs"></span><a class="reference internal" href="../module/GNUInstallDirs.html#module:GNUInstallDirs" title="GNUInstallDirs"><code class="xref cmake cmake-module docutils literal"><span class="pre">GNUInstallDirs</span></code></a> module to provide GNU-style |
| options for the layout of directories within the installation.</p> |
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