Gitweb:
http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=25dfeeb757bdf06521d65973676b21dac1d26d20
Commit: 25dfeeb757bdf06521d65973676b21dac1d26d20
Parent: 0a6ef376d4baf298aaa2db71794df821a0d7795c
Author: Sam Ravnborg <[EMAIL PROTECTED]>
AuthorDate: Wed Jan 30 13:32:21 2008 +0100
Committer: Ingo Molnar <[EMAIL PROTECTED]>
CommitDate: Wed Jan 30 13:32:21 2008 +0100
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 <[EMAIL PROTECTED]>
Cc: "H. Peter Anvin" <[EMAIL PROTECTED]>
Cc: Andi Kleen <[EMAIL PROTECTED]>
Signed-off-by: Ingo Molnar <[EMAIL PROTECTED]>
Signed-off-by: Thomas Gleixner <[EMAIL PROTECTED]>
---
arch/x86/Makefile | 12 ++++++++----
1 files changed, 8 insertions(+), 4 deletions(-)
diff --git a/arch/x86/Makefile b/arch/x86/Makefile
index d3debde..0c5b407 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
-
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