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Subject[PATCH] [5/5] kbuild: Set -fconserve-stack option for gcc 4.5
Date

The upcomming gcc 4.5 has a new -fconserve-stack option
that tells the inliner to take stack frame size in account.
Set it if the compiler supports it.

Signed-off-by: Andi Kleen <ak@linux.intel.com>

---
Makefile | 3 +++
1 file changed, 3 insertions(+)
Index: linux-2.6.31-rc3-ak/Makefile
===================================================================
--- linux-2.6.31-rc3-ak.orig/Makefile
+++ linux-2.6.31-rc3-ak/Makefile
@@ -575,6 +575,9 @@ KBUILD_CFLAGS += $(call cc-option,-fno-s
# revert to pre-gcc-4.4 behaviour of .eh_frame
KBUILD_CFLAGS += $(call cc-option,-fno-dwarf2-cfi-asm)

+# conserve stack if available
+KBUILD_CFLAGS += $(call cc-option,-fconserve-stack)
+
# Add user supplied CPPFLAGS, AFLAGS and CFLAGS as the last assignments
# But warn user when we do so
warn-assign = \

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