On Wed, Feb 04, 2009 at 10:26:12PM +0100, Ingo Molnar wrote:
>
> * Anton Vorontsov <avorontsov@xxxxxxxxxxxxx> wrote:
>
> > This patch gives arches more freedom on overwriting CFLAGS, specifically
> > on PowerPC we want to remove -fno-omit-frame-pointer flag.
> >
> > Signed-off-by: Anton Vorontsov <avorontsov@xxxxxxxxxxxxx>
> > ---
> > Makefile | 4 ++--
> > 1 files changed, 2 insertions(+), 2 deletions(-)
> >
> > diff --git a/Makefile b/Makefile
> > index 7715b2c..d1ba93f 100644
> > --- a/Makefile
> > +++ b/Makefile
> > @@ -525,8 +525,6 @@ else
> > KBUILD_CFLAGS += -O2
> > endif
> >
> > -include $(srctree)/arch/$(SRCARCH)/Makefile
> > -
> > ifneq (CONFIG_FRAME_WARN,0)
> > KBUILD_CFLAGS += $(call cc-option,-Wframe-larger-than=${CONFIG_FRAME_WARN})
> > endif
> > @@ -555,6 +553,8 @@ ifdef CONFIG_DEBUG_SECTION_MISMATCH
> > KBUILD_CFLAGS += $(call cc-option, -fno-inline-functions-called-once)
> > endif
> >
> > +include $(srctree)/arch/$(SRCARCH)/Makefile
> > +
> > # arch Makefile may override CC so keep this after arch Makefile is included
> > NOSTDINC_FLAGS += -nostdinc -isystem $(shell $(CC) -print-file-name=include)
> > CHECKFLAGS += $(NOSTDINC_FLAGS)
> > --
>
> this patch is really for Sam to judge - Cc:-ed him.
If we move the include further down then the following:
# Force gcc to behave correct even for buggy distributions
# Arch Makefiles may override this setting
KBUILD_CFLAGS += $(call cc-option, -fno-stack-protector)
will most likely fail.
If popwerpc needs to get rid of "-fno-omit-frame-pointer" then
we need a way to express this at KConfig level and NOT by doing
some tricks with CFLAGS.
Sam
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