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| <div class="section" id="cmake-host-system-information"> |
| <span id="command:cmake_host_system_information"></span><h1>cmake_host_system_information<a class="headerlink" href="#cmake-host-system-information" title="Permalink to this headline">ΒΆ</a></h1> |
| <p>Query host system specific information.</p> |
| <div class="highlight-cmake notranslate"><div class="highlight"><pre><span></span><span class="nf">cmake_host_system_information(</span><span class="no">RESULT</span><span class="w"> </span><span class="nv"><variable></span><span class="w"> </span><span class="no">QUERY</span><span class="w"> </span><span class="nv"><key></span><span class="w"> </span><span class="p">...</span><span class="nf">)</span><span class="w"></span> |
| </pre></div> |
| </div> |
| <p>Queries system information of the host system on which cmake runs. |
| One or more <code class="docutils literal notranslate"><span class="pre"><key></span></code> can be provided to select the information to be |
| queried. The list of queried values is stored in <code class="docutils literal notranslate"><span class="pre"><variable></span></code>.</p> |
| <p><code class="docutils literal notranslate"><span class="pre"><key></span></code> can be one of the following values:</p> |
| <dl> |
| <dt><code class="docutils literal notranslate"><span class="pre">NUMBER_OF_LOGICAL_CORES</span></code></dt><dd><p>Number of logical cores</p> |
| </dd> |
| <dt><code class="docutils literal notranslate"><span class="pre">NUMBER_OF_PHYSICAL_CORES</span></code></dt><dd><p>Number of physical cores</p> |
| </dd> |
| <dt><code class="docutils literal notranslate"><span class="pre">HOSTNAME</span></code></dt><dd><p>Hostname</p> |
| </dd> |
| <dt><code class="docutils literal notranslate"><span class="pre">FQDN</span></code></dt><dd><p>Fully qualified domain name</p> |
| </dd> |
| <dt><code class="docutils literal notranslate"><span class="pre">TOTAL_VIRTUAL_MEMORY</span></code></dt><dd><p>Total virtual memory in MiB <a class="footnote-reference brackets" href="#mebibytes" id="id1">1</a></p> |
| </dd> |
| <dt><code class="docutils literal notranslate"><span class="pre">AVAILABLE_VIRTUAL_MEMORY</span></code></dt><dd><p>Available virtual memory in MiB <a class="footnote-reference brackets" href="#mebibytes" id="id2">1</a></p> |
| </dd> |
| <dt><code class="docutils literal notranslate"><span class="pre">TOTAL_PHYSICAL_MEMORY</span></code></dt><dd><p>Total physical memory in MiB <a class="footnote-reference brackets" href="#mebibytes" id="id3">1</a></p> |
| </dd> |
| <dt><code class="docutils literal notranslate"><span class="pre">AVAILABLE_PHYSICAL_MEMORY</span></code></dt><dd><p>Available physical memory in MiB <a class="footnote-reference brackets" href="#mebibytes" id="id4">1</a></p> |
| </dd> |
| <dt><code class="docutils literal notranslate"><span class="pre">IS_64BIT</span></code></dt><dd><div class="versionadded"> |
| <p><span class="versionmodified added">New in version 3.10.</span></p> |
| </div> |
| <p>One if processor is 64Bit</p> |
| </dd> |
| <dt><code class="docutils literal notranslate"><span class="pre">HAS_FPU</span></code></dt><dd><div class="versionadded"> |
| <p><span class="versionmodified added">New in version 3.10.</span></p> |
| </div> |
| <p>One if processor has floating point unit</p> |
| </dd> |
| <dt><code class="docutils literal notranslate"><span class="pre">HAS_MMX</span></code></dt><dd><div class="versionadded"> |
| <p><span class="versionmodified added">New in version 3.10.</span></p> |
| </div> |
| <p>One if processor supports MMX instructions</p> |
| </dd> |
| <dt><code class="docutils literal notranslate"><span class="pre">HAS_MMX_PLUS</span></code></dt><dd><div class="versionadded"> |
| <p><span class="versionmodified added">New in version 3.10.</span></p> |
| </div> |
| <p>One if processor supports Ext. MMX instructions</p> |
| </dd> |
| <dt><code class="docutils literal notranslate"><span class="pre">HAS_SSE</span></code></dt><dd><div class="versionadded"> |
| <p><span class="versionmodified added">New in version 3.10.</span></p> |
| </div> |
| <p>One if processor supports SSE instructions</p> |
| </dd> |
| <dt><code class="docutils literal notranslate"><span class="pre">HAS_SSE2</span></code></dt><dd><div class="versionadded"> |
| <p><span class="versionmodified added">New in version 3.10.</span></p> |
| </div> |
| <p>One if processor supports SSE2 instructions</p> |
| </dd> |
| <dt><code class="docutils literal notranslate"><span class="pre">HAS_SSE_FP</span></code></dt><dd><div class="versionadded"> |
| <p><span class="versionmodified added">New in version 3.10.</span></p> |
| </div> |
| <p>One if processor supports SSE FP instructions</p> |
| </dd> |
| <dt><code class="docutils literal notranslate"><span class="pre">HAS_SSE_MMX</span></code></dt><dd><div class="versionadded"> |
| <p><span class="versionmodified added">New in version 3.10.</span></p> |
| </div> |
| <p>One if processor supports SSE MMX instructions</p> |
| </dd> |
| <dt><code class="docutils literal notranslate"><span class="pre">HAS_AMD_3DNOW</span></code></dt><dd><div class="versionadded"> |
| <p><span class="versionmodified added">New in version 3.10.</span></p> |
| </div> |
| <p>One if processor supports 3DNow instructions</p> |
| </dd> |
| <dt><code class="docutils literal notranslate"><span class="pre">HAS_AMD_3DNOW_PLUS</span></code></dt><dd><div class="versionadded"> |
| <p><span class="versionmodified added">New in version 3.10.</span></p> |
| </div> |
| <p>One if processor supports 3DNow+ instructions</p> |
| </dd> |
| <dt><code class="docutils literal notranslate"><span class="pre">HAS_IA64</span></code></dt><dd><div class="versionadded"> |
| <p><span class="versionmodified added">New in version 3.10.</span></p> |
| </div> |
| <p>One if IA64 processor emulating x86</p> |
| </dd> |
| <dt><code class="docutils literal notranslate"><span class="pre">HAS_SERIAL_NUMBER</span></code></dt><dd><div class="versionadded"> |
| <p><span class="versionmodified added">New in version 3.10.</span></p> |
| </div> |
| <p>One if processor has serial number</p> |
| </dd> |
| <dt><code class="docutils literal notranslate"><span class="pre">PROCESSOR_SERIAL_NUMBER</span></code></dt><dd><div class="versionadded"> |
| <p><span class="versionmodified added">New in version 3.10.</span></p> |
| </div> |
| <p>Processor serial number</p> |
| </dd> |
| <dt><code class="docutils literal notranslate"><span class="pre">PROCESSOR_NAME</span></code></dt><dd><div class="versionadded"> |
| <p><span class="versionmodified added">New in version 3.10.</span></p> |
| </div> |
| <p>Human readable processor name</p> |
| </dd> |
| <dt><code class="docutils literal notranslate"><span class="pre">PROCESSOR_DESCRIPTION</span></code></dt><dd><div class="versionadded"> |
| <p><span class="versionmodified added">New in version 3.10.</span></p> |
| </div> |
| <p>Human readable full processor description</p> |
| </dd> |
| <dt><code class="docutils literal notranslate"><span class="pre">OS_NAME</span></code></dt><dd><div class="versionadded"> |
| <p><span class="versionmodified added">New in version 3.10.</span></p> |
| </div> |
| <p>See <span class="target" id="index-0-variable:CMAKE_HOST_SYSTEM_NAME"></span><a class="reference internal" href="../variable/CMAKE_HOST_SYSTEM_NAME.html#variable:CMAKE_HOST_SYSTEM_NAME" title="CMAKE_HOST_SYSTEM_NAME"><code class="xref cmake cmake-variable docutils literal notranslate"><span class="pre">CMAKE_HOST_SYSTEM_NAME</span></code></a></p> |
| </dd> |
| <dt><code class="docutils literal notranslate"><span class="pre">OS_RELEASE</span></code></dt><dd><div class="versionadded"> |
| <p><span class="versionmodified added">New in version 3.10.</span></p> |
| </div> |
| <p>The OS sub-type e.g. on Windows <code class="docutils literal notranslate"><span class="pre">Professional</span></code></p> |
| </dd> |
| <dt><code class="docutils literal notranslate"><span class="pre">OS_VERSION</span></code></dt><dd><div class="versionadded"> |
| <p><span class="versionmodified added">New in version 3.10.</span></p> |
| </div> |
| <p>The OS build ID</p> |
| </dd> |
| <dt><code class="docutils literal notranslate"><span class="pre">OS_PLATFORM</span></code></dt><dd><div class="versionadded"> |
| <p><span class="versionmodified added">New in version 3.10.</span></p> |
| </div> |
| <p>See <span class="target" id="index-0-variable:CMAKE_HOST_SYSTEM_PROCESSOR"></span><a class="reference internal" href="../variable/CMAKE_HOST_SYSTEM_PROCESSOR.html#variable:CMAKE_HOST_SYSTEM_PROCESSOR" title="CMAKE_HOST_SYSTEM_PROCESSOR"><code class="xref cmake cmake-variable docutils literal notranslate"><span class="pre">CMAKE_HOST_SYSTEM_PROCESSOR</span></code></a></p> |
| </dd> |
| <dt><code class="docutils literal notranslate"><span class="pre">DISTRIB_INFO</span></code></dt><dd><div class="versionadded"> |
| <p><span class="versionmodified added">New in version 3.22.</span></p> |
| </div> |
| <p>Read <code class="file docutils literal notranslate"><span class="pre">/etc/os-release</span></code> file and define the given <code class="docutils literal notranslate"><span class="pre"><variable></span></code> |
| into a list of read variables</p> |
| </dd> |
| <dt><code class="docutils literal notranslate"><span class="pre">DISTRIB_<name></span></code></dt><dd><div class="versionadded"> |
| <p><span class="versionmodified added">New in version 3.22.</span></p> |
| </div> |
| <p>Get the <code class="docutils literal notranslate"><span class="pre"><name></span></code> variable (see <a class="reference external" href="https://www.freedesktop.org/software/systemd/man/os-release.html">man 5 os-release</a>) if it exists in the |
| <code class="file docutils literal notranslate"><span class="pre">/etc/os-release</span></code> file</p> |
| <p>Example:</p> |
| <div class="highlight-cmake notranslate"><div class="highlight"><pre><span></span><span class="nf">cmake_host_system_information(</span><span class="no">RESULT</span><span class="w"> </span><span class="no">PRETTY_NAME</span><span class="w"> </span><span class="no">QUERY</span><span class="w"> </span><span class="no">DISTRIB_PRETTY_NAME</span><span class="nf">)</span><span class="w"></span> |
| <span class="nf">message(</span><span class="no">STATUS</span><span class="w"> </span><span class="s">"${PRETTY_NAME}"</span><span class="nf">)</span><span class="w"></span> |
| |
| <span class="nf">cmake_host_system_information(</span><span class="no">RESULT</span><span class="w"> </span><span class="no">DISTRO</span><span class="w"> </span><span class="no">QUERY</span><span class="w"> </span><span class="no">DISTRIB_INFO</span><span class="nf">)</span><span class="w"></span> |
| |
| <span class="nf">foreach(</span><span class="no">VAR</span><span class="w"> </span><span class="no">IN</span><span class="w"> </span><span class="no">LISTS</span><span class="w"> </span><span class="no">DISTRO</span><span class="nf">)</span><span class="w"></span> |
| <span class="w"> </span><span class="nf">message(</span><span class="no">STATUS</span><span class="w"> </span><span class="s">"${VAR}=`${${VAR}}`"</span><span class="nf">)</span><span class="w"></span> |
| <span class="nf">endforeach()</span><span class="w"></span> |
| </pre></div> |
| </div> |
| <p>Output:</p> |
| <div class="highlight-none notranslate"><div class="highlight"><pre><span></span>-- Ubuntu 20.04.2 LTS |
| -- DISTRO_BUG_REPORT_URL=`https://bugs.launchpad.net/ubuntu/` |
| -- DISTRO_HOME_URL=`https://www.ubuntu.com/` |
| -- DISTRO_ID=`ubuntu` |
| -- DISTRO_ID_LIKE=`debian` |
| -- DISTRO_NAME=`Ubuntu` |
| -- DISTRO_PRETTY_NAME=`Ubuntu 20.04.2 LTS` |
| -- DISTRO_PRIVACY_POLICY_URL=`https://www.ubuntu.com/legal/terms-and-policies/privacy-policy` |
| -- DISTRO_SUPPORT_URL=`https://help.ubuntu.com/` |
| -- DISTRO_UBUNTU_CODENAME=`focal` |
| -- DISTRO_VERSION=`20.04.2 LTS (Focal Fossa)` |
| -- DISTRO_VERSION_CODENAME=`focal` |
| -- DISTRO_VERSION_ID=`20.04` |
| </pre></div> |
| </div> |
| </dd> |
| </dl> |
| <p>If <code class="file docutils literal notranslate"><span class="pre">/etc/os-release</span></code> file is not found, the command tries to gather OS |
| identification via fallback scripts. The fallback script can use <a class="reference external" href="http://linuxmafia.com/faq/Admin/release-files.html">various |
| distribution-specific files</a> to collect OS identification data and map it |
| into <a class="reference external" href="https://www.freedesktop.org/software/systemd/man/os-release.html">man 5 os-release</a> variables.</p> |
| <div class="section" id="fallback-interface-variables"> |
| <h2>Fallback Interface Variables<a class="headerlink" href="#fallback-interface-variables" title="Permalink to this headline">ΒΆ</a></h2> |
| <dl class="cmake variable"> |
| <dt class="sig sig-object cmake" id="variable:CMAKE_GET_OS_RELEASE_FALLBACK_SCRIPTS"> |
| <span class="sig-name descname"><span class="pre">CMAKE_GET_OS_RELEASE_FALLBACK_SCRIPTS</span></span><a class="headerlink" href="#variable:CMAKE_GET_OS_RELEASE_FALLBACK_SCRIPTS" title="Permalink to this definition">ΒΆ</a></dt> |
| <dd><p>In addition to the scripts shipped with CMake, a user may append full |
| paths to his script(s) to the this list. The script filename has the |
| following format: <code class="docutils literal notranslate"><span class="pre">NNN-<name>.cmake</span></code>, where <code class="docutils literal notranslate"><span class="pre">NNN</span></code> is three digits |
| used to apply collected scripts in a specific order.</p> |
| </dd></dl> |
| |
| <dl class="cmake variable"> |
| <dt class="sig sig-object cmake" id="variable:CMAKE_GET_OS_RELEASE_FALLBACK_RESULT_<varname>"> |
| <span class="sig-name descname"><span class="pre">CMAKE_GET_OS_RELEASE_FALLBACK_RESULT_<varname></span></span><a class="headerlink" href="#variable:CMAKE_GET_OS_RELEASE_FALLBACK_RESULT_<varname>" title="Permalink to this definition">ΒΆ</a></dt> |
| <dd><p>Variables collected by the user provided fallback script |
| ought to be assigned to CMake variables using this naming |
| convention. Example, the <code class="docutils literal notranslate"><span class="pre">ID</span></code> variable from the manual becomes |
| <code class="docutils literal notranslate"><span class="pre">CMAKE_GET_OS_RELEASE_FALLBACK_RESULT_ID</span></code>.</p> |
| </dd></dl> |
| |
| <dl class="cmake variable"> |
| <dt class="sig sig-object cmake" id="variable:CMAKE_GET_OS_RELEASE_FALLBACK_RESULT"> |
| <span class="sig-name descname"><span class="pre">CMAKE_GET_OS_RELEASE_FALLBACK_RESULT</span></span><a class="headerlink" href="#variable:CMAKE_GET_OS_RELEASE_FALLBACK_RESULT" title="Permalink to this definition">ΒΆ</a></dt> |
| <dd><p>The fallback script ought to store names of all assigned |
| <code class="docutils literal notranslate"><span class="pre">CMAKE_GET_OS_RELEASE_FALLBACK_RESULT_<varname></span></code> variables in this list.</p> |
| </dd></dl> |
| |
| <p>Example:</p> |
| <div class="highlight-cmake notranslate"><div class="highlight"><pre><span></span><span class="c"># Try to detect some old distribution</span> |
| <span class="c"># See also</span> |
| <span class="c"># - http://linuxmafia.com/faq/Admin/release-files.html</span> |
| <span class="c">#</span> |
| <span class="nf">if(</span><span class="no">NOT</span><span class="w"> </span><span class="no">EXISTS</span><span class="w"> </span><span class="s">"${CMAKE_SYSROOT}/etc/foobar-release"</span><span class="nf">)</span><span class="w"></span> |
| <span class="w"> </span><span class="nf">return()</span><span class="w"></span> |
| <span class="nf">endif()</span><span class="w"></span> |
| <span class="c"># Get the first string only</span> |
| <span class="nf">file(</span><span class="w"></span> |
| <span class="w"> </span><span class="no">STRINGS</span><span class="w"> </span><span class="s">"${CMAKE_SYSROOT}/etc/foobar-release"</span><span class="w"> </span><span class="no">CMAKE_GET_OS_RELEASE_FALLBACK_CONTENT</span><span class="w"></span> |
| <span class="w"> </span><span class="no">LIMIT_COUNT</span><span class="w"> </span><span class="m">1</span><span class="w"></span> |
| <span class="w"> </span><span class="nf">)</span><span class="w"></span> |
| <span class="c">#</span> |
| <span class="c"># Example:</span> |
| <span class="c">#</span> |
| <span class="c"># Foobar distribution release 1.2.3 (server)</span> |
| <span class="c">#</span> |
| <span class="nf">if(</span><span class="no">CMAKE_GET_OS_RELEASE_FALLBACK_CONTENT</span><span class="w"> </span><span class="no">MATCHES</span><span class="w"> </span><span class="s">"Foobar distribution release ([0-9\.]+) .*"</span><span class="nf">)</span><span class="w"></span> |
| <span class="w"> </span><span class="nf">set(</span><span class="no">CMAKE_GET_OS_RELEASE_FALLBACK_RESULT_NAME</span><span class="w"> </span><span class="nb">Foobar</span><span class="nf">)</span><span class="w"></span> |
| <span class="w"> </span><span class="nf">set(</span><span class="no">CMAKE_GET_OS_RELEASE_FALLBACK_RESULT_PRETTY_NAME</span><span class="w"> </span><span class="s">"${CMAKE_GET_OS_RELEASE_FALLBACK_CONTENT}"</span><span class="nf">)</span><span class="w"></span> |
| <span class="w"> </span><span class="nf">set(</span><span class="no">CMAKE_GET_OS_RELEASE_FALLBACK_RESULT_ID</span><span class="w"> </span><span class="nb">foobar</span><span class="nf">)</span><span class="w"></span> |
| <span class="w"> </span><span class="nf">set(</span><span class="no">CMAKE_GET_OS_RELEASE_FALLBACK_RESULT_VERSION</span><span class="w"> </span><span class="o">${</span><span class="nt">CMAKE_MATCH_1</span><span class="o">}</span><span class="nf">)</span><span class="w"></span> |
| <span class="w"> </span><span class="nf">set(</span><span class="no">CMAKE_GET_OS_RELEASE_FALLBACK_RESULT_VERSION_ID</span><span class="w"> </span><span class="o">${</span><span class="nt">CMAKE_MATCH_1</span><span class="o">}</span><span class="nf">)</span><span class="w"></span> |
| <span class="w"> </span><span class="nf">list(</span><span class="w"></span> |
| <span class="w"> </span><span class="no">APPEND</span><span class="w"> </span><span class="no">CMAKE_GET_OS_RELEASE_FALLBACK_RESULT</span><span class="w"></span> |
| <span class="w"> </span><span class="no">CMAKE_GET_OS_RELEASE_FALLBACK_RESULT_NAME</span><span class="w"></span> |
| <span class="w"> </span><span class="no">CMAKE_GET_OS_RELEASE_FALLBACK_RESULT_PRETTY_NAME</span><span class="w"></span> |
| <span class="w"> </span><span class="no">CMAKE_GET_OS_RELEASE_FALLBACK_RESULT_ID</span><span class="w"></span> |
| <span class="w"> </span><span class="no">CMAKE_GET_OS_RELEASE_FALLBACK_RESULT_VERSION</span><span class="w"></span> |
| <span class="w"> </span><span class="no">CMAKE_GET_OS_RELEASE_FALLBACK_RESULT_VERSION_ID</span><span class="w"></span> |
| <span class="w"> </span><span class="nf">)</span><span class="w"></span> |
| <span class="nf">endif()</span><span class="w"></span> |
| <span class="nf">unset(</span><span class="no">CMAKE_GET_OS_RELEASE_FALLBACK_CONTENT</span><span class="nf">)</span><span class="w"></span> |
| </pre></div> |
| </div> |
| <p class="rubric">Footnotes</p> |
| <dl class="footnote brackets"> |
| <dt class="label" id="mebibytes"><span class="brackets">1</span><span class="fn-backref">(<a href="#id1">1</a>,<a href="#id2">2</a>,<a href="#id3">3</a>,<a href="#id4">4</a>)</span></dt> |
| <dd><p>One MiB (mebibyte) is equal to 1024x1024 bytes.</p> |
| </dd> |
| </dl> |
| </div> |
| </div> |
| |
| |
| <div class="clearer"></div> |
| </div> |
| </div> |
| </div> |
| <div class="sphinxsidebar" role="navigation" aria-label="main navigation"> |
| <div class="sphinxsidebarwrapper"> |
| <h3><a href="../index.html">Table of Contents</a></h3> |
| <ul> |
| <li><a class="reference internal" href="#">cmake_host_system_information</a><ul> |
| <li><a class="reference internal" href="#fallback-interface-variables">Fallback Interface Variables</a></li> |
| </ul> |
| </li> |
| </ul> |
| |
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