cce508fed2
Separate the required CPPFLAGS from environment overridable CFLAGS. Change-Id: I0c1c0a1cebc7f7971634bf57d4a2370939c43fda Signed-off-by: Nico Huber <nico.huber@secunet.com> Reviewed-on: https://review.coreboot.org/20175 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Philippe Mathieu-Daudé <philippe.mathieu.daude@gmail.com> Reviewed-by: Patrick Georgi <pgeorgi@google.com> Reviewed-by: Hannah Williams <hannah.williams@intel.com> Reviewed-by: Paul Menzel <paulepanter@users.sourceforge.net>