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| -rw-r--r-- | docs/meson.html | 58 |
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diff --git a/docs/meson.html b/docs/meson.html index 7ffef817f42..09b45bed007 100644 --- a/docs/meson.html +++ b/docs/meson.html @@ -169,47 +169,67 @@ Developers will often want to install Mesa to a testing directory rather 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> +This example sets -fmax-errors for compiling C sources and -DMAGIC=123 +for C++ sources: +</p> +<p> +<pre> +meson builddir/ -Dc_args=-fmax-errors=10 -Dcpp_args=-DMAGIC=123 +</pre> +</p> +</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. |