[Xen-devel] [PATCH2] Don't optimize function calls with -g

[Samuel Thibault <samuel.thibault@xxxxxxxxxxxxx>]

Samuel Thibault, le Thu 06 Mar 2008 15:55:09 +0000, a écrit :
> Use -fno-omit-frame-pointer in addition to -g
> as that permits to use simple stack walk while debugging

Even better:



Don't optimize function calls with -g
-fno-omit-frame-pointer to easily walk the stack
-fno-optimize-sibling-calls to not miss a step

Signed-off-by: Samuel Thibault <samuel.thibault@xxxxxxxxxxxxx>

diff -r fb74347d80c3 Config.mk
--- a/Config.mk Wed Mar 05 12:20:40 2008 +0000
+++ b/Config.mk Thu Mar 06 15:57:53 2008 +0000
@@ -55,7 +55,7 @@ endef
 endef
 
 ifeq ($(debug),y)
-CFLAGS += -g
+CFLAGS += -g -fno-omit-frame-pointer -fno-optimize-sibling-calls
 endif
 
 CFLAGS += -fno-strict-aliasing
diff -r fb74347d80c3 extras/mini-os/minios.mk
--- a/extras/mini-os/minios.mk  Wed Mar 05 12:20:40 2008 +0000
+++ b/extras/mini-os/minios.mk  Thu Mar 06 15:57:53 2008 +0000
@@ -15,7 +15,7 @@ DEF_LDFLAGS =
 DEF_LDFLAGS =
 
 ifeq ($(debug),y)
-DEF_CFLAGS += -g
+DEF_CFLAGS += -g -fno-omit-frame-pointer -fno-optimize-sibling-calls
 else
 DEF_CFLAGS += -O3
 endif

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