Masahiro Yamada <masahiroy@xxxxxxxxxx> writes: > CFLAGS_REMOVE_<file>.o works per object, that is, there is no > convenient way to filter out flags for every object in a directory. > > Add ccflags-remove-y and asflags-remove-y to make it easily. > > Use ccflags-remove-y to clean up some Makefiles. > > Suggested-by: Sami Tolvanen <samitolvanen@xxxxxxxxxx> > Signed-off-by: Masahiro Yamada <masahiroy@xxxxxxxxxx> > --- > > arch/arm/boot/compressed/Makefile | 6 +----- > arch/powerpc/xmon/Makefile | 3 +-- > arch/sh/boot/compressed/Makefile | 5 +---- > kernel/trace/Makefile | 4 ++-- > lib/Makefile | 5 +---- > scripts/Makefile.lib | 4 ++-- > 6 files changed, 8 insertions(+), 19 deletions(-) > > diff --git a/arch/powerpc/xmon/Makefile b/arch/powerpc/xmon/Makefile > index 89c76ca35640..55cbcdd88ac0 100644 > --- a/arch/powerpc/xmon/Makefile > +++ b/arch/powerpc/xmon/Makefile > @@ -7,8 +7,7 @@ UBSAN_SANITIZE := n > KASAN_SANITIZE := n > > # Disable ftrace for the entire directory > -ORIG_CFLAGS := $(KBUILD_CFLAGS) > -KBUILD_CFLAGS = $(subst $(CC_FLAGS_FTRACE),,$(ORIG_CFLAGS)) > +ccflags-remove-y += $(CC_FLAGS_FTRACE) This could be: ccflags-remove-$(CONFIG_FUNCTION_TRACER) += $(CC_FLAGS_FTRACE) Similar to kernel/trace/Makefile below. I don't mind though. Acked-by: Michael Ellerman <mpe@xxxxxxxxxxxxxx> (powerpc) cheers > diff --git a/kernel/trace/Makefile b/kernel/trace/Makefile > index 6575bb0a0434..7492844a8b1b 100644 > --- a/kernel/trace/Makefile > +++ b/kernel/trace/Makefile > @@ -2,9 +2,9 @@ > > # Do not instrument the tracer itself: > > +ccflags-remove-$(CONFIG_FUNCTION_TRACER) += $(CC_FLAGS_FTRACE) > + > ifdef CONFIG_FUNCTION_TRACER > -ORIG_CFLAGS := $(KBUILD_CFLAGS) > -KBUILD_CFLAGS = $(subst $(CC_FLAGS_FTRACE),,$(ORIG_CFLAGS)) > > # Avoid recursion due to instrumentation. > KCSAN_SANITIZE := n
