build system: provide generic compiler flag variables

Introduce generic-$(type)-ccopts and $(class)-generic-ccopts
to declare compiler flags that apply to all files of a certain
type or of a certain class. Then use them.

This is inspired by the commit listed below, but rewritten to match
upstream, and split in smaller pieces to keep intent clear.

Change-Id: I655688e82a0cc5bad89b6f55dc217b9f66b64604
Signed-off-by: Patrick Georgi <>
Based-On-Change-Id: I50af7dacf616e0f8ff4c43f4acc679089ad7022b
Based-On-Signed-off-by: Julius Werner <>
Tested-by: build bot (Jenkins)
Reviewed-by: Aaron Durbin <>
4 files changed