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| <div class="section" id="cpack-set-destdir"> |
| <span id="variable:CPACK_SET_DESTDIR"></span><h1>CPACK_SET_DESTDIR<a class="headerlink" href="#cpack-set-destdir" title="Permalink to this headline">ΒΆ</a></h1> |
| <p>Boolean toggle to make CPack use <code class="docutils literal"><span class="pre">DESTDIR</span></code> mechanism when packaging.</p> |
| <p><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 a |
| basic relocation mechanism that should not be used on Windows (see |
| <span class="target" id="index-0-variable:CMAKE_INSTALL_PREFIX"></span><a class="reference internal" href="CMAKE_INSTALL_PREFIX.html#variable:CMAKE_INSTALL_PREFIX" title="CMAKE_INSTALL_PREFIX"><code class="xref cmake cmake-variable docutils literal"><span class="pre">CMAKE_INSTALL_PREFIX</span></code></a> documentation). 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> |
| </div> |
| <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>. When preparing a package, CPack |
| first installs the items to be packaged in a local (to the build tree) |
| directory by using the same <code class="docutils literal"><span class="pre">DESTDIR</span></code> mechanism. Nevertheless, if |
| <code class="docutils literal"><span class="pre">CPACK_SET_DESTDIR</span></code> is set then CPack will set <code class="docutils literal"><span class="pre">DESTDIR</span></code> before doing the |
| local install. The most noticeable difference is that without |
| <code class="docutils literal"><span class="pre">CPACK_SET_DESTDIR</span></code>, CPack uses <span class="target" id="index-0-variable:CPACK_PACKAGING_INSTALL_PREFIX"></span><a class="reference internal" href="CPACK_PACKAGING_INSTALL_PREFIX.html#variable:CPACK_PACKAGING_INSTALL_PREFIX" title="CPACK_PACKAGING_INSTALL_PREFIX"><code class="xref cmake cmake-variable docutils literal"><span class="pre">CPACK_PACKAGING_INSTALL_PREFIX</span></code></a> |
| as a prefix whereas with <code class="docutils literal"><span class="pre">CPACK_SET_DESTDIR</span></code> set, CPack will use |
| <span class="target" id="index-1-variable:CMAKE_INSTALL_PREFIX"></span><a class="reference internal" href="CMAKE_INSTALL_PREFIX.html#variable:CMAKE_INSTALL_PREFIX" title="CMAKE_INSTALL_PREFIX"><code class="xref cmake cmake-variable docutils literal"><span class="pre">CMAKE_INSTALL_PREFIX</span></code></a> as a prefix.</p> |
| <p>Manually setting <code class="docutils literal"><span class="pre">CPACK_SET_DESTDIR</span></code> may help (or simply be necessary) |
| if some install rules uses absolute <code class="docutils literal"><span class="pre">DESTINATION</span></code> (see CMake |
| <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> command). However, starting with CPack/CMake 2.8.3 RPM |
| and DEB installers tries to handle <code class="docutils literal"><span class="pre">DESTDIR</span></code> automatically so that it is |
| seldom necessary for the user to set it.</p> |
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