[Buildroot] [PATCH v1 2/3] package/qt5webengine: needs libxkbcommon

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

Hello Thomas,

On Thu, 17 Sep 2020 23:05:46 +0200, Thomas Petazzoni <thomas.petazzoni@bootlin.com> wrote:

> On Tue, 15 Sep 2020 20:00:03 +0200
> Peter Seiderer <ps.report@gmx.net> wrote:
>
> > Fixes:
> >   subprocess.CalledProcessError: Command '['/home/seiderer/Work/Buildroot/build_rpi4_qt5_update_001/build/qt5webengine-5.15.1/src/core/pkg-config_wrapper.sh', '--variable=prefix', 'xkbcommon']' returned non-zero exit status 1
> >
> >   See //ui/events/keycodes/BUILD.gn:12:3: whence it was called.
> >     pkg_config("xkbcommon") {
> >     ^------------------------
> >   See //ui/events/ozone/layout/BUILD.gn:42:15: which caused the file to be included.
> >       deps += [ "//ui/events/keycodes:xkb" ]
> >                 ^-------------------------
> >   Project ERROR: GN run error!
> >
> > Signed-off-by: Peter Seiderer <ps.report@gmx.net>
> > ---
> > Notes:
> >  - send as extra patch as I am not sure if the failure is caused by
> >    the version bump and/or by a combination from my buildroot config
>
> Unfortunately, I think we really need to understand if this is a change
> needed in relation to the bump or not, so that we know if it needs to
> go in a stable branch.
>
> At least in a simple build of qt5webengine in v5.15.0 I have not
> encountered this particular build failure. But perhaps it occurs only
> when you have a bunch of other dependencies enabled.
>
> The BUILD.gn file contains:
>
> if (use_xkbcommon) {
>   pkg_config("xkbcommon") {
>     packages = [ "xkbcommon" ]
>   }
> }
>
> And src/buildtools/config/linux.pri seems to be defining the value of
> use_xkbcommon:
>
>     qtConfig(build-qtwebengine-core):qtConfig(webengine-system-xkbcommon) {
>         gn_args += use_xkbcommon=true
>     } else {
>         gn_args += use_xkbcommon=false
>     }
>
> I've never been familiar enough with the .pri syntax though to
> understand what this is doing.
>
> Could you try to see if the problem really comes from the 5.15.1 bump ?

qt5webengine-5.15.0 with the same buildroot config
compiles fine without libxkbcommon, will try qt5webengine-5.15.1
with a striped down buildroot config to evaluate if some of
my buildroot config options enable the need for libxkbcommon...

Regards,
Peter

>
> Thanks!
>
> Thomas