e619a65b09
Move this code from headless-backend to a helper library, so it can be shared with wayland-backend. gl-renderer.h was missing #pragma once, which made the build fail. Unfortunately gl-borders needs gl-renderer.h which will attempt to include EGL headers if gl-renderer is enabled in the build, so we must get the EGL build flags too, just for the headers. Signed-off-by: Pekka Paalanen <pekka.paalanen@collabora.com>