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Reference-manual_builtin_build_machine.html
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<div data-extension="core" data-hotdoc-in-toplevel="True" data-hotdoc-project="Meson-documentation" data-hotdoc-ref="Reference-manual_builtin_build_machine.html" class="page_container" id="page-wrapper">
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<h1 id="build-machine-information-build_machine">Build machine information (<code>build_machine</code>)</h1>
<p>Provides information about the build machine -- the machine that is doing the actual compilation.
See <a href="Cross-compilation.html">Cross-compilation</a>.</p>
<p>Currently, these values are populated using
<a href="https://docs.python.org/3.7/library/platform.html#platform.system"><code>platform.system()</code></a> and
<a href="https://docs.python.org/3.7/library/platform.html#platform.machine"><code>platform.machine()</code></a>.
If you think the returned values for any of these are incorrect for
your system or CPU, or if your OS is not in the linked table, please
<a href="https://github.com/mesonbuild/meson/issues/new">file a bug</a> report
with details and we'll look into it.</p>
<h2 id="extended-by">Extended by</h2>
<p>Build machine information is extended by the following subtypes:</p>
<ul>
<li><a href="Reference-manual_builtin_host_machine.html"><ins><code>host_machine</code></ins></a></li>
<li><a href="Reference-manual_builtin_target_machine.html"><ins><code>target_machine</code></ins></a></li>
</ul>
<h2 id="build-machine-information-methods">Build machine information methods</h2>
<p style="padding: 7.5px; margin: 0px;"></p>
<h3 id="build_machinecpu">build_machine.cpu()</h3>
<p>Returns a more specific CPU name, such as <code>i686</code>, <code>armv8l</code>, etc.</p>
<p style="padding: 5px; margin: 0px;"></p> <!-- A bit of space because we remove the top margin below -->
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<pre><code class="language-meson"><a href="Reference-manual_elementary_str.html"><ins>str</ins></a> cpu()</code></pre>
<p style="padding: 7.5px; margin: 0px;"></p>
<hr>
<p style="padding: 7.5px; margin: 0px;"></p>
<h3 id="build_machinecpu_family">build_machine.cpu_family()</h3>
<p>Returns the CPU family name.
<a href="Reference-tables.html#cpu-families">This table</a> contains
all known CPU families. These are guaranteed to continue working.</p>
<p style="padding: 5px; margin: 0px;"></p> <!-- A bit of space because we remove the top margin below -->
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<pre><code class="language-meson"><a href="Reference-manual_elementary_str.html"><ins>str</ins></a> cpu_family()</code></pre>
<p style="padding: 7.5px; margin: 0px;"></p>
<hr>
<p style="padding: 7.5px; margin: 0px;"></p>
<h3 id="build_machineendian">build_machine.endian()</h3>
<p>returns <code>'big'</code> on big-endian systems and <code>'little'</code> on little-endian systems.</p>
<p style="padding: 5px; margin: 0px;"></p> <!-- A bit of space because we remove the top margin below -->
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</div>
<pre><code class="language-meson"><a href="Reference-manual_elementary_str.html"><ins>str</ins></a> endian()</code></pre>
<p style="padding: 7.5px; margin: 0px;"></p>
<hr>
<p style="padding: 7.5px; margin: 0px;"></p>
<h3 id="build_machinekernel">build_machine.kernel()</h3>
<p>Returns the name of the Operating System Kernel, such as <code>linux</code>, <code>xnu</code>, and
<code>nt</code>. <a href="Reference-tables.html#kernel-names-since-120">See here for more complete
list</a> These are more specific
than <code>system</code>. If this cannot be detected (for the build machine), or is not
set in the cross file (for the host machine when cross compiling), calling
this method is fatal.</p>
<p style="padding: 5px; margin: 0px;"></p> <!-- A bit of space because we remove the top margin below -->
<div style="display: flex;">
<h4 style="margin-top: 0px;" id="signature3">Signature</h4>
<div style="flex-grow: 1;"></div>
<div>
<div style="margin: 0px; text-align: center;">
<p style="margin: 0px;"><em style="color: #5affff;">(since 1.2.0)</em></p>
</div>
</div>
</div>
<pre><code class="language-meson"><a href="Reference-manual_elementary_str.html"><ins>str</ins></a> kernel()</code></pre>
<p style="padding: 7.5px; margin: 0px;"></p>
<hr>
<p style="padding: 7.5px; margin: 0px;"></p>
<h3 id="build_machinesubsystem">build_machine.subsystem()</h3>
<p>Returns the variant of the operating system, such as <code>ios</code> and <code>tvos</code>. <a href="Reference-tables.html#kernel-names-since-120">See
here for more complete list</a>
These are more specific than <code>system</code>. If this cannot be detected (for the
build machine), or is not set in the cross file (for the host machine when
cross compiling), calling this method is fatal.</p>
<p style="padding: 5px; margin: 0px;"></p> <!-- A bit of space because we remove the top margin below -->
<div style="display: flex;">
<h4 style="margin-top: 0px;" id="signature4">Signature</h4>
<div style="flex-grow: 1;"></div>
<div>
<div style="margin: 0px; text-align: center;">
<p style="margin: 0px;"><em style="color: #5affff;">(since 1.2.0)</em></p>
</div>
</div>
</div>
<pre><code class="language-meson"><a href="Reference-manual_elementary_str.html"><ins>str</ins></a> subsystem()</code></pre>
<p style="padding: 7.5px; margin: 0px;"></p>
<hr>
<p style="padding: 7.5px; margin: 0px;"></p>
<h3 id="build_machinesystem">build_machine.system()</h3>
<p>Returns the operating system name.
<a href="Reference-tables.html#operating-system-names">This table</a> Lists
all of the currently known Operating System names, these are
guaranteed to continue working.</p>
<p style="padding: 5px; margin: 0px;"></p> <!-- A bit of space because we remove the top margin below -->
<div style="display: flex;">
<h4 style="margin-top: 0px;" id="signature5">Signature</h4>
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<div>
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</div>
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</div>
<pre><code class="language-meson"><a href="Reference-manual_elementary_str.html"><ins>str</ins></a> system()</code></pre>
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