[Buildroot] Configuring OpenGL

[Peter Seiderer <ps.report@gmx.net>]

Hello Patricia,

On Mon, 21 Dec 2020 19:04:05 -0500, Patricia Holden <pholden@nklabs.com> wrote:

> Hello Peter,
>
> Thanks for the comprehensive info on how-to!  I do have a question on the
> hardware info:
>
> > For example Raspberry Pi hardware there are two options, use
> > rpi-userland (the old way/32-bit only) or mesa3d/v3d/vc4 (the
> > new way 32-bit/64-bit)...
>
> My client's system is the TI Sitara board (Beaglebone-X15).  I tried
> selecting ti-sgx-km, but it failed to build.  I think the version of Linux
> supported by the board I'm using is outdated vs the version of Linux
> expected to compile this option.  The dev-board we started with uses
> Linux 4.9.147-ti-rt-r121.  We are using a local linux-custom version, but I
> am afraid to migrate to a newer version of the kernel.  You know how it
> goes with hardware vendors!  Any suggestions?

Sorry, no Beagle/Ti expert... and no hardware to test myself, but there was an
Beagle/Ti software stack update recently suggested (and I believe already
committed on buildroot git master), see [1]...

Regards,
Peter

[1] http://lists.busybox.net/pipermail/buildroot/2020-December/298361.html

>
> Thanks!
> Patricia
>
>
> On Mon, Dec 21, 2020 at 4:13 AM Peter Seiderer <ps.report@gmx.net> wrote:
>
> > Hello Patricia,
> >
> > On Sun, 20 Dec 2020 19:01:53 -0500, Patricia Holden <pholden@nklabs.com>
> > wrote:
> >
> > > I know this topic has been visited a couple times, but I did not see my
> > > particular problem in the threads.  I am trying to add a package that
> > > requires QT5 components and Gstreamer.  In order to add QT5, openGL is
> > > required.
> > >
> > > Buildroot version I am using is  buildroot-2020-02.
> > >
> > > I went into the menuconfig->Libraries->Graphics after looking at
> > > package/Config.in to find out where I would enable it.  When I got into
> > the
> > > Graphics libraries, openGL was not an option anywhere in the list.
> > >
> > > My question is:  What do I need to do to enable opengl in the menuconfig
> > so
> > > that I can get my package built and into target?
> >
> > It depends on your platform and/or graphics hardware. In short your need
> > an OpenGL provider.
> >
> > For the long/technical answer take a look at package/qt5/qt5base/Config.in:
> >
> >  138 comment "OpenGL support needs an OpenGL-capable backend"
> >  139         depends on !BR2_PACKAGE_QT5_GL_AVAILABLE
> >  140
> >  141 config BR2_PACKAGE_QT5BASE_OPENGL
> >  142         bool "OpenGL support"
> >  143         depends on BR2_PACKAGE_QT5_GL_AVAILABLE
> >  144         help
> >  145           This option enables OpenGL support.
> >
> > and package/qt5/Config.in:
> >
> >   1 config BR2_PACKAGE_QT5_GL_AVAILABLE
> >   2         bool
> >   3         default y
> >   4         depends on BR2_PACKAGE_HAS_LIBGL || BR2_PACKAGE_HAS_LIBGLES
> >   5
> >
> > So grep for BR2_PACKAGE_HAS_LIBGL or BR2_PACKAGE_HAS_LIBGLES providers:
> >
> >         $ git grep "select BR2_PACKAGE_HAS_LIBGL"
> > package/freescale-imx/gpu-amd-bin-mx51/Config.in:       select
> > BR2_PACKAGE_HAS_LIBGLES
> > package/freescale-imx/imx-gpu-viv/Config.in:    select
> > BR2_PACKAGE_HAS_LIBGLES
> > package/gcnano-binaries/Config.in:      select BR2_PACKAGE_HAS_LIBGLES
> > package/mali-t76x/Config.in:    select BR2_PACKAGE_HAS_LIBGLES
> > package/mesa3d/Config.in:       select BR2_PACKAGE_HAS_LIBGL
> > package/mesa3d/Config.in:       select BR2_PACKAGE_HAS_LIBGLES
> > package/nvidia-driver/Config.in:        select BR2_PACKAGE_HAS_LIBGL
> > package/nvidia-driver/Config.in:        select BR2_PACKAGE_HAS_LIBGLES
> > package/rpi-userland/Config.in: select BR2_PACKAGE_HAS_LIBGLES
> > package/sunxi-mali-mainline/Config.in:  select BR2_PACKAGE_HAS_LIBGLES
> > package/ti-gfx/Config.in:       select BR2_PACKAGE_HAS_LIBGLES
> > package/ti-sgx-um/Config.in:    select BR2_PACKAGE_HAS_LIBGLES
> >
> >         $ git grep "select BR2_PACKAGE_HAS_LIBGLES" | cat
> > package/freescale-imx/gpu-amd-bin-mx51/Config.in:       select
> > BR2_PACKAGE_HAS_LIBGLES
> > package/freescale-imx/imx-gpu-viv/Config.in:    select
> > BR2_PACKAGE_HAS_LIBGLES
> > package/gcnano-binaries/Config.in:      select BR2_PACKAGE_HAS_LIBGLES
> > package/mali-t76x/Config.in:    select BR2_PACKAGE_HAS_LIBGLES
> > package/mesa3d/Config.in:       select BR2_PACKAGE_HAS_LIBGLES
> > package/nvidia-driver/Config.in:        select BR2_PACKAGE_HAS_LIBGLES
> > package/rpi-userland/Config.in: select BR2_PACKAGE_HAS_LIBGLES
> > package/sunxi-mali-mainline/Config.in:  select BR2_PACKAGE_HAS_LIBGLES
> > package/ti-gfx/Config.in:       select BR2_PACKAGE_HAS_LIBGLES
> > package/ti-sgx-um/Config.in:    select BR2_PACKAGE_HAS_LIBGLES
> >
> >
> > For example Raspberry Pi hardware there are two options, use
> > rpi-userland (the old way/32-bit only) or mesa3d/v3d/vc4 (the
> > new way 32-bit/64-bit)...
> >
> > Regards,
> > Peter
> >
> > >
> > > Thanks!
> > > Patricia
> > >
> >
> >
>