minigbm: autogenerate gbm.pc and cleanup build variables
FINALLY, the gbm.pc is autogenerated to respect the variables steering
the build.
BUG=b:338254311
TEST=mkdir -p build && OUT=build make && test -f build/gbm.pc && echo "ALL GOOD"
TEST=emerge minigbm
Change-Id: Ie1458bb46375be1357cbf4f0a8f59d698cbd6cfd
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/minigbm/+/5513263
Commit-Queue: Ryan Neph <ryanneph@google.com>
Tested-by: Ryan Neph <ryanneph@google.com>
Reviewed-by: Dawn Han <dawnhan@google.com>
Reviewed-by: Miguel Casas-Sanchez <mcasas@chromium.org>
2 files changed
