Some functions/macros like assert() require redefinition for testing
purposes. ENV_TEST is introduced to make it possible without using
bypass hacks.
This patch also adds a global __TEST__ define to TEST_CFLAGS for
all test targets in order to enable ENV_TEST.
Signed-off-by: Jakub Czapiga <jacz@semihalf.com>
Change-Id: Ib8f2932902a73a7dbe181adc82cc18437abb48e8
Reviewed-on: https://review.coreboot.org/c/coreboot/+/51803
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Paul Fagerburg <pfagerburg@chromium.org>
Reviewed-by: Julius Werner <jwerner@chromium.org>
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