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selftests: Use optional USERCFLAGS and USERLDFLAGS

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This change enables to extend CFLAGS and LDFLAGS from command line, e.g.
to extend compiler checks: make USERCFLAGS=-Werror USERLDFLAGS=-static

USERCFLAGS and USERLDFLAGS are documented in
Documentation/kbuild/makefiles.rst and Documentation/kbuild/kbuild.rst

This should be backported (down to 5.10) to improve previous kernel
versions testing as well.

Cc: Shuah Khan <skhan@linuxfoundation.org>
Cc: stable@vger.kernel.org
Signed-off-by: Mickaël Salaün <mic@digikod.net>
Link: https://lore.kernel.org/r/20220909103901.1503436-1-mic@digikod.net
Signed-off-by: Shuah Khan <skhan@linuxfoundation.org>
This commit is contained in:
Mickaël Salaün 2022-09-09 12:39:01 +02:00 committed by Shuah Khan
parent 9abf2313ad
commit de3ee3f634
1 changed files with 5 additions and 0 deletions
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5
tools/testing/selftests/lib.mk
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@ -123,6 +123,11 @@ endef
clean:
$(CLEAN)
# Enables to extend CFLAGS and LDFLAGS from command line, e.g.
# make USERCFLAGS=-Werror USERLDFLAGS=-static
CFLAGS += $(USERCFLAGS)
LDFLAGS += $(USERLDFLAGS)
# When make O= with kselftest target from main level
# the following aren't defined.
#