Re: [OE-core] [PATCH] mesa-gl: The purpose of mesa-gl is to provide for X11 usage

["Andrey Zhizhikin" <andrey.z@gmail.com>]

On Wed, Mar 25, 2020 at 7:15 PM Mark Hatle
<mark.hatle@kernel.crashing.org> wrote:
>
> Trying to build mesa-gl without X11 enabled, results in numerous errors
> about being incorrectly configured, such as:
>
>   ERROR: Problem encountered: building dri drivers require at least one windowing system or classic osmesa

I believe I was fighting similar issue in meta-freescale layer for
imx8mm derivative [1], where the status of GPU support was not know at
the time. What I did back then is set the default configuration to
osmesa and used swrast in order to be able to use mesa on that
derivative. After that, when GPU support has been added into Mesa -
those modifications were reverted.

I guess turning to swrast in case if someone would decide _not_ to use
X11 - is not a bad option here, rather than enforcing the X11 for
distros which are using this recipe. Any thoughts?

>
> After consulting with the author of this recipe, it was clear that it
> was only intended for the X11 use-case, so requring X11 should avoid the
> error message above.
>
> Signed-off-by: Mark Hatle <mark.hatle@kernel.crashing.org>
> ---
>  meta/recipes-graphics/mesa/mesa-gl_20.0.1.bb | 6 ++++--
>  1 file changed, 4 insertions(+), 2 deletions(-)
>
> diff --git a/meta/recipes-graphics/mesa/mesa-gl_20.0.1.bb b/meta/recipes-graphics/mesa/mesa-gl_20.0.1.bb
> index d4b1c1c454..5674c6b1fe 100644
> --- a/meta/recipes-graphics/mesa/mesa-gl_20.0.1.bb
> +++ b/meta/recipes-graphics/mesa/mesa-gl_20.0.1.bb
> @@ -6,5 +6,7 @@ PROVIDES = "virtual/libgl virtual/mesa"
>
>  S = "${WORKDIR}/mesa-${PV}"
>
> -PACKAGECONFIG ??= "opengl dri ${@bb.utils.filter('DISTRO_FEATURES', 'x11', d)}"
> -PACKAGECONFIG_class-target = "opengl dri ${@bb.utils.filter('DISTRO_FEATURES', 'x11', d)}"
> +REQUIRED_DISTRO_FEATURE = "x11"
> +
> +PACKAGECONFIG ??= "opengl dri x11"
> +PACKAGECONFIG_class-target = "opengl dri x11"
> --
> 2.17.1
>
> 

-- 
Regards,
Andrey.

[1]: https://github.com/Freescale/meta-freescale/commit/9a2210d9ec707531436dc4b56ce655c0bf50a8a8