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authorMatthias Urlichs <smurf@smurf.noris.de>2005-06-23 00:10:05 -0700
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-06-23 09:45:30 -0700
commit0030cbf06c669b65e124414af51b5010fc53b760 (patch)
treeb7e57d9c8131590a7cbdd2c20dc82954697c485b /Makefile
parent71a2224d7d1cefc23a1ac80bba421cc069cc3257 (diff)
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[PATCH] Turn off sibling call optimization w/ frame pointers
Frame pointers are supposed to enable debuggers to reliably tell where a call comes from. That is defeated by GCC's sibling call optimization (aka tail recursion elimination). This patch turns this optimization off when compiling with frame pointers. Signed-Off-By: Matthias Urlichs <smurf@smurf.noris.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'Makefile')
-rw-r--r--Makefile2
1 files changed, 1 insertions, 1 deletions
diff --git a/Makefile b/Makefile
index 0d1e74d5006..fad349724e9 100644
--- a/Makefile
+++ b/Makefile
@@ -518,7 +518,7 @@ CFLAGS += $(call add-align,CONFIG_CC_ALIGN_LOOPS,-loops)
CFLAGS += $(call add-align,CONFIG_CC_ALIGN_JUMPS,-jumps)
ifdef CONFIG_FRAME_POINTER
-CFLAGS += -fno-omit-frame-pointer
+CFLAGS += -fno-omit-frame-pointer $(call cc-option,-fno-optimize-sibling-calls,)
else
CFLAGS += -fomit-frame-pointer
endif