sudo dnf install meson # Fedora
</pre>
-<p><strong>Mesa requires Meson >= 0.45.0 to build.</strong>
+<p><strong>Mesa requires Meson >= 0.45.0 to build.</strong>
Some older versions of meson do not check that they are too old and will error
out in odd ways.
-</p>
-
<p>Basic configuration is done with:</p>
<pre>
For now, we have a <code>bin/meson-options.py</code> script that prints
the options for you.
If that script doesn't work for some reason, you can always look in the
-<code>meson_options.txt</code> file at the root of the project.
+<a href="https://gitlab.freedesktop.org/mesa/mesa/blob/master/meson_options.txt">
+meson_options.txt</a> file at the root of the project.
</p>
<p>
</pre>
<p>
-Note: autotools automatically updates translation files (used by the DRI
+Note: autotools automatically updated translation files (used by the DRI
configuration tool) as part of the build process,
Meson does not do this. Instead, you will need do this:
</p>
than the system library directory.
This can be done with the --prefix option. For example:
</p>
-<code>
+<pre>
meson --prefix="${PWD}/build/install" build/
-</code>
+</pre>
<p>
will put the final libraries and drivers into the build/install/
directory.
Then you can set LD_LIBRARY_PATH and LIBGL_DRIVERS_PATH to that location
to run/test the driver.
</p>
+<p>
+Meson also honors <code>DESTDIR</code> for installs.
+</p>
</dd>
-<dt>Environment Variables</dt>
-<dd><p>Meson supports the standard CC and CXX environment variables for
-changing the default compiler. Meson does support CFLAGS, CXXFLAGS, etc. But
-their use is discouraged because of the many caveats in using them. Instead it
-is recomended to use <code>-D${lang}_args</code> and
-<code>-D${lang}_link_args</code> instead. Among the benefits of these options
+<dt>Compiler Options</dt>
+<dd>
+<p>Meson supports the common CFLAGS, CXXFLAGS, etc. environment
+variables but their use is discouraged because of the many caveats
+in using them.
+</p>
+<p>Instead, it is recomended to use <code>-D${lang}_args</code> and
+<code>-D${lang}_link_args</code>. Among the benefits of these options
is that they are guaranteed to persist across rebuilds and reconfigurations.
+</p>
+<p>
+This example sets -fmax-errors for compiling C sources and -DMAGIC=123
+for C++ sources:
+</p>
+<pre>
+meson builddir/ -Dc_args=-fmax-errors=10 -Dcpp_args=-DMAGIC=123
+</pre>
+</dd>
-Meson does not allow changing compiler in a configured builddir, you will need
+
+<dt>Compiler Specification</dt>
+<dd>
+<p>
+Meson supports the standard CC and CXX environment variables for
+changing the default compiler. Note that Meson does not allow
+changing the compilers in a configured builddir so you will need
to create a new build dir for a different compiler.
</p>
-
+<p>
+This is an example of specifying the clang compilers and cleaning
+the build directory before reconfiguring with an extra C option:
+</p>
<pre>
- CC=clang CXX=clang++ meson build-clang
- ninja -C build-clang
- ninja -C build-clang clean
- meson configure build -Dc_args="-Wno-typedef-redefinition"
- ninja -C build-clang
+CC=clang CXX=clang++ meson build-clang
+ninja -C build-clang
+ninja -C build-clang clean
+meson configure build -Dc_args="-Wno-typedef-redefinition"
+ninja -C build-clang
</pre>
-
<p>
The default compilers depends on your operating system. Meson supports most of
the popular compilers, a complete list is available
<a href="http://mesonbuild.com/Reference-tables.html#compiler-ids">here</a>.
</p>
-
-<p>Meson also honors <code>DESTDIR</code> for installs</p>
</dd>
-
<dt>LLVM</dt>
<dd><p>Meson includes upstream logic to wrap llvm-config using its standard
dependency interface.
these files provide information about the native build environment (as opposed
to a cross build environment). They are ini formatted and can override where to
find llvm-config:
+</p>
custom-llvm.ini
<pre>
<pre>
meson builddir/ --native-file custom-llvm.ini
</pre>
-</p></dd>
+</dd>
<dd><p>
For selecting llvm-config for cross compiling a
<a href="https://mesonbuild.com/Cross-compilation.html#defining-the-environment">"cross file"</a>
should be used. It uses the same format as the native file above:
+</p>
-cross-llvm.ini
+<p>cross-llvm.ini</p>
<pre>
[binaries]
...
llvm-config = '/usr/lib/llvm-config-32'
</pre>
-Then configure meson:
-
+<p>Then configure meson:</p>
<pre>
meson builddir/ --cross-file cross-llvm.ini
</pre>
See the <a href="#cross-compilation">Cross Compilation</a> section for more information.
-</dd></p>
+</dd>
<dd><p>
For older versions of meson <code>$PATH</code> (or <code>%PATH%</code> on
windows) will be searched for llvm-config (and llvm-config$version and
llvm-config-$version), you can override this environment variable to control
the search: <code>PATH=/path/with/llvm-config:$PATH meson build</code>.
-</dd></p>
-</dl>
+</p></dd>
-<dl>
<dt><code>PKG_CONFIG_PATH</code></dt>
<dd><p>The
<code>pkg-config</code> utility is a hard requirement for configuring and
buildtype, which causes meson to inject no additional compiler arguments, only
those in the C/CXXFLAGS and those that mesa itself defines.</p>
</dd>
-</dl>
-<dl>
<dt><code>-Db_ndebug</code></dt>
<dd><p>This option controls assertions in meson projects. When set to <code>false</code>
(the default) assertions are enabled, when set to true they are disabled. This
<p>
Those running on ArchLinux can use the AUR-maintained packages for some
of those, as they'll have the right values for your system:
+</p>
<ul>
<li><a href="https://aur.archlinux.org/packages/meson-cross-x86-linux-gnu">meson-cross-x86-linux-gnu</a></li>
<li><a href="https://aur.archlinux.org/packages/meson-cross-aarch64-linux-gnu">meson-cross-aarch64-linux-gnu</a></li>
</ul>
-</p>
<p>
32-bit build on x86 linux:
+</p>
<pre>
[binaries]
c = '/usr/bin/gcc'
cpu = 'i686'
endian = 'little'
</pre>
-</p>
<p>
64-bit build on ARM linux:
+</p>
<pre>
[binaries]
c = '/usr/bin/aarch64-linux-gnu-gcc'
cpu = 'aarch64'
endian = 'little'
</pre>
-</p>
<p>
64-bit build on x86 windows:
+</p>
<pre>
[binaries]
c = '/usr/bin/x86_64-w64-mingw32-gcc'
cpu = 'i686'
endian = 'little'
</pre>
-</p>
</div>
</body>
projects / mesa.git / blobdiff