From: Mickaël Salaün mic@digikod.net
commit de3ee3f63400a23954e7c1ad1cb8c20f29ab6fe3 upstream.
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 Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- tools/testing/selftests/lib.mk | 5 +++++ 1 file changed, 5 insertions(+)
--- a/tools/testing/selftests/lib.mk +++ b/tools/testing/selftests/lib.mk @@ -128,6 +128,11 @@ 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. #