xen: move some arch CFLAGS into the common Rules.mk.

These are the same on all current architectures, so move them
into xen/Rules.mk.  Lay them out a little more neatly too.

Signed-off-by: Tim Deegan <tim@xen.org>
Reviewed-by: Jan Beulich <jbeulich@suse.com>
Acked-by: Ian Campbell <ian.campbell@citrix.com>
Acked-by: Keir Fraser <keir@xen.org>

xen/Rules.mk

@@ -41,6 +41,10 @@ ALL_OBJS-y               += $(BASEDIR)/xsm/built_in.o
 ALL_OBJS-y               += $(BASEDIR)/arch/$(TARGET_ARCH)/built_in.o
 ALL_OBJS-$(x86)          += $(BASEDIR)/crypto/built_in.o
 
+CFLAGS-y                += -fno-builtin -fno-common
+CFLAGS-y                += -Werror -Wredundant-decls -Wno-pointer-arith
+CFLAGS-y                += -pipe
+CFLAGS-y                += -iwithprefix include
 CFLAGS-y                += -g -D__XEN__ -include $(BASEDIR)/include/xen/config.h
 CFLAGS-$(XSM_ENABLE)    += -DXSM_ENABLE
 CFLAGS-$(FLASK_ENABLE)  += -DFLASK_ENABLE -DXSM_MAGIC=0xf97cff8c

xen/arch/arm/Rules.mk

@@ -10,8 +10,6 @@ HAS_DEVICE_TREE := y
 HAS_VIDEO := y
 HAS_ARM_HDLCD := y
 
-CFLAGS += -fno-builtin -fno-common -Wredundant-decls
-CFLAGS += -iwithprefix include -Werror -Wno-pointer-arith -pipe
 CFLAGS += -I$(BASEDIR)/include
 
 $(call cc-options-add,CFLAGS,CC,$(EMBEDDED_EXTRA_CFLAGS))

xen/arch/x86/Rules.mk

@@ -25,8 +25,6 @@ ifneq ($(XEN_OS),SunOS)
 CFLAGS-$(gcc) += -nostdinc
 endif
 
-CFLAGS += -fno-builtin -fno-common -Wredundant-decls
-CFLAGS += -iwithprefix include -Werror -Wno-pointer-arith -pipe
 CFLAGS += -I$(BASEDIR)/include 
 CFLAGS += -I$(BASEDIR)/include/asm-x86/mach-generic
 CFLAGS += -I$(BASEDIR)/include/asm-x86/mach-default