On 10/5/22 7:47 AM, Paul Barker wrote:
On 28/09/2022 15:21, Paul Barker wrote:
Hi Andrew,
On 27/09/2022 18:53, Andrew Davis wrote:
On 9/27/22 12:01 PM, Paul Barker wrote:
Hi folks,
I'm trying to add support for the Yocto Project kirkstone release to our
meta-sancloud BSP layer and I'm facing a build issue. I've reproduced the
issue using just the meta-ti layer and its dependencies, targeting the
beaglebone machine. I've used the kirkstone-next branch of meta-ti as
the kirkstone branch has not been updated in 5 months and has the same
issue.
The build fails due to a lack of buildable providers for virtual/libgl.
Is this a known issue?
I've run into this before, Cairo package pulls in desktop OpenGL when
GLES2 would be more appropriate. I'll look for the exact fix but
you can try putting this in your distro .conf file:
PACKAGECONFIG_remove_pn-cairo = "opengl"
PACKAGECONFIG_append_pn-cairo = " egl"
PACKAGECONFIG_append_pn-cairo = " glesv2"
If these settings are required they should be applied by default (perhaps via a
MACHINE_FEATURE). I would expect the beaglebone machine to build
"out-of-the-box" with the poky distro. If that really isn't possible then
necessary settings should be documented in the readme file for the layer, added
to a local.conf.sample file or applied via a setup script.
Thanks
Looking at this again today, I attempted to try the above PACKAGECONFIG changes
however they do not match the correct override syntax for kirkstone. That
suggests to me that they haven't been tested.
They have not been tested on Kirkstone. These are the changes I needed for
Dunfell, I'd guess fixing the override syntax and trying the same on
Kirkstone will help your issue, but no guarantees.
Please also note that this is not specificly an issue with the cairo
configuration, attempting to build core-image-x11 & core-image-weston also fail.
For example, for core-image-x11 the errors are as follows, re-tested today with
the current HEAD of the kirkstone branch (2b11afa8aa19):
ERROR: Nothing PROVIDES 'virtual/libgl' (but
/workdir/poky/meta/recipes-graphics/xorg-xserver/xserver-xorg_21.1.4.bb,
/workdir/poky/meta/recipes-graphics/libepoxy/libepoxy_1.5.9.bb,
/workdir/poky/meta/recipes-graphics/cairo/cairo_1.16.0.bb DEPENDS on or
otherwise requires it)
mesa-gl PROVIDES virtual/libgl but was skipped:
PREFERRED_PROVIDER_virtual/libgl set to mesa, not mesa-gl
mesa PROVIDES virtual/libgl but was skipped:
PREFERRED_PROVIDER_virtual/libgles1 set to ti-sgx-ddk-um, not mesa
NOTE: Runtime target 'xserver-xorg' is unbuildable, removing...
Missing or unbuildable dependency chain was: ['xserver-xorg', 'virtual/libgl']
NOTE: Runtime target 'packagegroup-core-x11-xserver' is unbuildable, removing...
Missing or unbuildable dependency chain was: ['packagegroup-core-x11-xserver',
'xserver-xorg', 'virtual/libgl']
NOTE: Runtime target 'packagegroup-core-x11-base' is unbuildable, removing...
Missing or unbuildable dependency chain was: ['packagegroup-core-x11-base',
'packagegroup-core-x11-xserver', 'xserver-xorg', 'virtual/libgl']
ERROR: Required build target 'core-image-x11' has no buildable providers.
Missing or unbuildable dependency chain was: ['core-image-x11',
'packagegroup-core-x11-base', 'packagegroup-core-x11-xserver', 'xserver-xorg',
'virtual/libgl']
Is the kirkstone branch currently tested or expected to work? If there are known
limitations or additional configuration changes neccessary in local.conf, could
they be documented in the readme?
Kirkstone is still WIP, the base builds and boots, but there are some
spots still being readied yet (especially around graphics).
Xorg by default assumes desktop OpenGL support, being an embedded device
we only support OpenGLES. Xorg does work just fine with OpenGLES but
you have to tell it what to use with distro level PACKAGECONFIG selecting
(same for cairo).
In the future I'd like to split the "opengl" DISTRO_FEATURE into two
(one for OpenGL and one for GLES2) and move them into MACHINE_FEATURE
where they belong. Then we can set these down in the BSP layer.
Until then you'll have to do the manual selecting.
Thanks,
Andrew
Thanks,
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