Prepare for building ANGLE for Android, which requires applying a
patch to fix building with minimal dependencies.
Rework the existing script by allowing passing the ANGLE_TARGET and
ANGLE_ARCH environmental variables to specify the target platform,
Android or Linux, and also allow building for arm64 in addtition to
x64 by setting ANGLE_ARCH.
Also build the GLESv1 compatibility mode library (libGLESv1_CM),
which is required for EGL testing on Android.
Based on work by Antonio Ospite.
Signed-off-by: Valentine Burley <valentine.burley@collabora.com>
Reviewed-by: Eric Engestrom <None>
Reviewed-by: Antonio Ospite <None>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/33377>
cc2bb73369