227bdde922
protoc v3 introduces a new syntax for proto files and warns when the syntax is not explicitly stated. protoc relies on the fact that undefined preprocessor symbols are explanded to 0 but since we use -Wundef they end up generating warnings. Change-Id: If07abeb54e932469c8f2c4d38634a97fdae40f77 Reviewed-by: Andreas Hansson <andreas.hansson@arm.com> Reviewed-by: Andreas Sandberg <andreas.sandberg@arm.com> Signed-off-by: Jason Lowe-Power <jason@lowepower.com>