kbuild: enable 'make CFLAGS=...' to add additional options to CC

[GitHub/mt8127/android_kernel_alcatel_ttab.git] / arch / powerpc / Makefile

diff --git a/arch/powerpc/Makefile b/arch/powerpc/Makefile
index 643839a3f5d82d484bd77b651711b93781a36c1b..51309848c11d62b2753c4cf3b288fb5939cf6df3 100644 (file)
--- a/arch/powerpc/Makefile
+++ b/arch/powerpc/Makefile
@@ -77,8 +77,8 @@ CFLAGS-$(CONFIG_PPC64)        := -mminimal-toc -mtraceback=none  -mcall-aixdesc
 CFLAGS-$(CONFIG_PPC32) := -Iarch/$(ARCH) -ffixed-r2 -mmultiple
 CPPFLAGS       += $(CPPFLAGS-y)
 AFLAGS         += $(AFLAGS-y)
-CFLAGS         += -msoft-float -pipe $(CFLAGS-y)
-CPP            = $(CC) -E $(CFLAGS)
+KBUILD_CFLAGS  += -msoft-float -pipe $(CFLAGS-y)
+CPP            = $(CC) -E $(KBUILD_CFLAGS)
 
 CHECKFLAGS     += -m$(CONFIG_WORD_SIZE) -D__powerpc__ -D__powerpc$(CONFIG_WORD_SIZE)__
 
@@ -88,35 +88,35 @@ GCC_BROKEN_VEC      := $(shell if [ $(call cc-version) -lt 0400 ] ; then echo "y"; fi
 ifeq ($(CONFIG_POWER4_ONLY),y)
 ifeq ($(CONFIG_ALTIVEC),y)
 ifeq ($(GCC_BROKEN_VEC),y)
-       CFLAGS += $(call cc-option,-mcpu=970)
+       KBUILD_CFLAGS += $(call cc-option,-mcpu=970)
 else
-       CFLAGS += $(call cc-option,-mcpu=power4)
+       KBUILD_CFLAGS += $(call cc-option,-mcpu=power4)
 endif
 else
-       CFLAGS += $(call cc-option,-mcpu=power4)
+       KBUILD_CFLAGS += $(call cc-option,-mcpu=power4)
 endif
 else
-       CFLAGS += $(call cc-option,-mtune=power4)
+       KBUILD_CFLAGS += $(call cc-option,-mtune=power4)
 endif
 endif
 
 ifeq ($(CONFIG_TUNE_CELL),y)
-       CFLAGS += $(call cc-option,-mtune=cell)
+       KBUILD_CFLAGS += $(call cc-option,-mtune=cell)
 endif
 
 # No AltiVec instruction when building kernel
-CFLAGS += $(call cc-option,-mno-altivec)
+KBUILD_CFLAGS += $(call cc-option,-mno-altivec)
 
 # Enable unit-at-a-time mode when possible. It shrinks the
 # kernel considerably.
-CFLAGS += $(call cc-option,-funit-at-a-time)
+KBUILD_CFLAGS += $(call cc-option,-funit-at-a-time)
 
 # Never use string load/store instructions as they are
 # often slow when they are implemented at all
-CFLAGS         += -mno-string
+KBUILD_CFLAGS          += -mno-string
 
 ifeq ($(CONFIG_6xx),y)
-CFLAGS         += -mcpu=powerpc
+KBUILD_CFLAGS          += -mcpu=powerpc
 endif
 
 cpu-as-$(CONFIG_4xx)           += -Wa,-m405
@@ -126,7 +126,7 @@ cpu-as-$(CONFIG_E500)               += -Wa,-me500
 cpu-as-$(CONFIG_E200)          += -Wa,-me200
 
 AFLAGS += $(cpu-as-y)
-CFLAGS += $(cpu-as-y)
+KBUILD_CFLAGS += $(cpu-as-y)
 
 head-y                         := arch/powerpc/kernel/head_$(CONFIG_WORD_SIZE).o
 head-$(CONFIG_8xx)             := arch/powerpc/kernel/head_8xx.o