diff options
| author | Sam Ravnborg <sam@ravnborg.org> | 2008-01-30 13:32:21 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-01-30 13:32:21 +0100 |
| commit | 25dfeeb757bdf06521d65973676b21dac1d26d20 (patch) | |
| tree | a7502f47c72d7bfda2b3cfc0e6bd4d5365c0f360 | |
| parent | 0a6ef376d4baf298aaa2db71794df821a0d7795c (diff) | |
| download | linux-25dfeeb757bdf06521d65973676b21dac1d26d20.tar.bz2 | |
x86: share more options between 32 and 64 bit build
On recommendation from Andi Kleen share a few more options
between 32 and 64 bit builds.
A defconfig build for i386 did not show any difference in
size of text and data.
The additional shared options are:
-Wno-sign-compare
-fno-asynchronous-unwind-tables
-mno-sse
-mno-mmx
-mno-sse2
-mno-3dnow
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Andi Kleen <ak@suse.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
| -rw-r--r-- | arch/x86/Makefile | 12 |
1 files changed, 8 insertions, 4 deletions
diff --git a/arch/x86/Makefile b/arch/x86/Makefile index d3debde0ce0b..0c5b4072d134 100644 --- a/arch/x86/Makefile +++ b/arch/x86/Makefile @@ -64,14 +64,10 @@ else KBUILD_CFLAGS += -mno-red-zone KBUILD_CFLAGS += -mcmodel=kernel - KBUILD_CFLAGS += -Wno-sign-compare - KBUILD_CFLAGS += -fno-asynchronous-unwind-tables # -funit-at-a-time shrinks the kernel .text considerably # unfortunately it makes reading oopses harder. KBUILD_CFLAGS += $(call cc-option,-funit-at-a-time) - # prevent gcc from generating any FP code by mistake - KBUILD_CFLAGS += $(call cc-option,-mno-sse -mno-mmx -mno-sse2 -mno-3dnow,) # this works around some issues with generating unwind tables in older gccs # newer gccs do it by default KBUILD_CFLAGS += -maccumulate-outgoing-args @@ -98,7 +94,15 @@ KBUILD_CFLAGS += $(cfi) $(cfi-sigframe) LDFLAGS := -m elf_$(UTS_MACHINE) OBJCOPYFLAGS := -O binary -R .note -R .comment -S + +# Speed up the build KBUILD_CFLAGS += -pipe +# Workaround for a gcc prelease that unfortunately was shipped in a suse release +KBUILD_CFLAGS += -Wno-sign-compare +# +KBUILD_CFLAGS += -fno-asynchronous-unwind-tables +# prevent gcc from generating any FP code by mistake +KBUILD_CFLAGS += $(call cc-option,-mno-sse -mno-mmx -mno-sse2 -mno-3dnow,) ### # Sub architecture support |