[Mesa-dev] Announcement: Meson build type change

[Eric Engestrom]

On Tuesday, 2017-11-07 06:54:59 -0700, Brian Paul wrote:
> On 11/07/2017 05:25 AM, Eric Engestrom wrote:
> > Hi all,
> > 
> > As a result of the discussion that started with this message:
> > https://lists.freedesktop.org/archives/mesa-dev/2017-November/175104.html
> > 
> > The default build type for Meson builds has been changed to
> > `debugoptimized` in commit d5597f09c6a18a3ed2dd [1].
> > 
> > For you devs, this means that some debug information will now be missing
> > if you use the default build type, due to the -O2 optimisations.
> > You can set the build type by giving `meson` or `meson configure` the
> > additional `-D buildtype=debug` option.
> > 
> > (Note that existing build dirs are not affected, as Meson only uses the
> > default values during the first initialisation, and stores them for
> > subsequent invocations.)
> > 
> > Also note that asserts are not automatically disabled on release builds,
> > but are controlled by an independent option, `b_ndebug`, defaulting to
> > `false`. Setting this option to `true` means "compile asserts out".
> > Custom assertion code should be compiled based on the standard NDEBUG
> > (which assert() uses), not Mesa's internal DEBUG.
> > 
> > If you have any question regarding Meson, Dylan and I will probably be
> > able to help you, so don't hesitate to ask :)
> 
> I still don't see any mention of meson in the docs/ directory.  I'd really
> appreciate someone writing a meson.html file that explains how to use meson
> and how to set build options like you just described.

Dylan wrote one, but I guess he hasn't pushed it yet. Dylan?

> 
> -Brian
>