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| <span id="envvar:DESTDIR"></span><h1>DESTDIR<a class="headerlink" href="#destdir" title="Permalink to this headline">ΒΆ</a></h1> |
| <p>This is a CMake <a class="reference internal" href="../manual/cmake-language.7.html#cmake-language-environment-variables"><span class="std std-ref">Environment Variable</span></a>. Its initial value is taken from |
| the calling process environment.</p> |
| <p>On UNIX one can use the <code class="docutils literal notranslate"><span class="pre">DESTDIR</span></code> mechanism in order to relocate the |
| whole installation. <code class="docutils literal notranslate"><span class="pre">DESTDIR</span></code> means DESTination DIRectory. It is |
| commonly used by packagers to install software in a staging directory.</p> |
| <p>For example, running</p> |
| <div class="highlight-shell notranslate"><div class="highlight"><pre><span></span>make <span class="nv">DESTDIR</span><span class="o">=</span>/package/stage install |
| </pre></div> |
| </div> |
| <p>will install the software using the installation prefix, e.g. <code class="docutils literal notranslate"><span class="pre">/usr/local</span></code>, |
| prepended with the <code class="docutils literal notranslate"><span class="pre">DESTDIR</span></code> value which gives <code class="docutils literal notranslate"><span class="pre">/package/stage/usr/local</span></code>. |
| The packaging tool may then construct the package from the content of the |
| <code class="docutils literal notranslate"><span class="pre">/package/stage</span></code> directory.</p> |
| <p>See the <span class="target" id="index-0-variable:CMAKE_INSTALL_PREFIX"></span><a class="reference internal" href="../variable/CMAKE_INSTALL_PREFIX.html#variable:CMAKE_INSTALL_PREFIX" title="CMAKE_INSTALL_PREFIX"><code class="xref cmake cmake-variable docutils literal notranslate"><span class="pre">CMAKE_INSTALL_PREFIX</span></code></a> variable to control the |
| installation prefix when configuring a build tree. Or, when using |
| the <span class="target" id="index-0-manual:cmake(1)"></span><a class="reference internal" href="../manual/cmake.1.html#manual:cmake(1)" title="cmake(1)"><code class="xref cmake cmake-manual docutils literal notranslate"><span class="pre">cmake(1)</span></code></a> command-line tool's <code class="docutils literal notranslate"><span class="pre">--install</span></code> mode, |
| one may specify a different prefix using the <code class="docutils literal notranslate"><span class="pre">--prefix</span></code> option.</p> |
| <div class="admonition note"> |
| <p class="admonition-title">Note</p> |
| <p><code class="docutils literal notranslate"><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 notranslate"><span class="pre">C:/Program</span> <span class="pre">Files</span></code> |
| which cannot be prepended with some other prefix.</p> |
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