[Xen-changelog] [xen-unstable] Add -fno-optimize-sibling-calls to debug CFLAGS. Also get rid of ?=

[Xen patchbot-unstable <patchbot-unstable@xxxxxxxxxxxxxxxxxxx>]

# HG changeset patch
# User Keir Fraser <keir.fraser@xxxxxxxxxx>
# Date 1205751760 0
# Node ID b0fe56f7b19031aaac442ab3ddff0c43a2169f9f
# Parent  f71f2bcb6cd660e9a610e9e197b2d7e38af9e542
Add -fno-optimize-sibling-calls to debug CFLAGS. Also get rid of ?=
assignment to CFLAGS.
Signed-off-by: Keir Fraser <keir.fraser@xxxxxxxxxx>
---
 config/StdGNU.mk |    5 ++---
 config/SunOS.mk  |    5 ++---
 2 files changed, 4 insertions(+), 6 deletions(-)

diff -r f71f2bcb6cd6 -r b0fe56f7b190 config/StdGNU.mk
--- a/config/StdGNU.mk  Mon Mar 17 10:58:29 2008 +0000
+++ b/config/StdGNU.mk  Mon Mar 17 11:02:40 2008 +0000
@@ -41,9 +41,8 @@ SHLIB_CFLAGS = -shared
 SHLIB_CFLAGS = -shared
 
 ifneq ($(debug),y)
-# Optimisation flags are overridable
-CFLAGS ?= -O2 -fomit-frame-pointer
+CFLAGS += -O2 -fomit-frame-pointer
 else
 # Less than -O1 produces bad code and large stack frames
-CFLAGS ?= -O1 -fno-omit-frame-pointer
+CFLAGS += -O1 -fno-omit-frame-pointer -fno-optimize-sibling-calls
 endif
diff -r f71f2bcb6cd6 -r b0fe56f7b190 config/SunOS.mk
--- a/config/SunOS.mk   Mon Mar 17 10:58:29 2008 +0000
+++ b/config/SunOS.mk   Mon Mar 17 11:02:40 2008 +0000
@@ -45,11 +45,10 @@ SHLIB_CFLAGS = -R $(SunOS_LIBDIR) -share
 SHLIB_CFLAGS = -R $(SunOS_LIBDIR) -shared
 
 ifneq ($(debug),y)
-# Optimisation flags are overridable
-CFLAGS ?= -O2 -fno-omit-frame-pointer
+CFLAGS += -O2 -fno-omit-frame-pointer
 else
 # Less than -O1 produces bad code and large stack frames
-CFLAGS ?= -O1 -fno-omit-frame-pointer
+CFLAGS += -O1 -fno-omit-frame-pointer
 endif
 
 CFLAGS += -Wa,--divide -D_POSIX_C_SOURCE=200112L -D__EXTENSIONS__

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