[OE-core] Including machine specific mesa-driver

[Nicolas Dechesne]

On Wed, Sep 23, 2015 at 11:50 PM, Richard Purdie
<richard.purdie at linuxfoundation.org> wrote:
>
> The idea was that the machine config can nominate the "X11" config it
> needs by indicating the drivers that make sense for this piece of
> hardware. The XSERVER variable is then used to decide which pieces of X
> to pull in and pulling in the right mesa pieces at the same time made
> sense then.


right.

>
>
> We could split the mesa pieces out into a separate MESADRIVERS variable
> and the wayland/weston could just pull those in? Ultimately its still
> the machine config which has the knowledge of which drivers make sense
> for a given platform. Exactly which piece of the system would pull in
> MESADRIVERS is a good question but I've not looked at the metadata just
> thinking out loud.

it looks like it's either libGL (when using X/GLX) or libEGL that
would dynamically load the libary. So we might be able to do something
along these lines:

--- a/meta/conf/machine/include/qemu.inc
+++ b/meta/conf/machine/include/qemu.inc
@@ -5,12 +5,14 @@ PREFERRED_PROVIDER_virtual/libgles1 ?= "mesa"
 PREFERRED_PROVIDER_virtual/libgles2 ?= "mesa"

 XSERVER ?= "xserver-xorg \
-            ${@bb.utils.contains('DISTRO_FEATURES', 'opengl',
'mesa-driver-swrast', '', d)} \
             xf86-input-evdev \
             xf86-input-mouse \
             xf86-video-fbdev \
             xf86-input-keyboard"

+RDEPENDS_libgl-mesa = "${@bb.utils.contains('DISTRO_FEATURES',
'opengl', 'mesa-driver-swrast', '', d)}"
+RDEPENDS_libegl-mesa = "${@bb.utils.contains('DISTRO_FEATURES',
'opengl', 'mesa-driver-swrast', '', d)}"
+
 MACHINE_FEATURES = "alsa bluetooth usbgadget screen"

 MACHINEOVERRIDES =. "qemuall:"

-------

how does that look like?

It's untested for now, btw.