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authorAnton Blanchard <anton@samba.org>2015-05-26 01:53:27 +0300
committerMichael Ellerman <mpe@ellerman.id.au>2015-06-11 10:33:05 +0300
commita50a862e74a9d7b447df30c33aa3d534ce3a977a (patch)
tree769397972aeb27f5da90eafd5414d4ceb72872da /arch/powerpc/Makefile
parent1fb3f5a7ca599f322e6bf21272ad215301159aa0 (diff)
downloadlinux-a50a862e74a9d7b447df30c33aa3d534ce3a977a.tar.xz
powerpc: Only use -mtraceback=no, -mno-string and -msoft-float if toolchain supports it
These options are not recognised on LLVM, so use call cc-option to check for support. Signed-off-by: Anton Blanchard <anton@samba.org> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'arch/powerpc/Makefile')
-rw-r--r--arch/powerpc/Makefile7
1 files changed, 4 insertions, 3 deletions
diff --git a/arch/powerpc/Makefile b/arch/powerpc/Makefile
index edf39cebfed8..799e67d54c4d 100644
--- a/arch/powerpc/Makefile
+++ b/arch/powerpc/Makefile
@@ -113,7 +113,7 @@ else
endif
endif
-CFLAGS-$(CONFIG_PPC64) := -mtraceback=no
+CFLAGS-$(CONFIG_PPC64) := $(call cc-option,-mtraceback=no)
ifeq ($(CONFIG_CPU_LITTLE_ENDIAN),y)
CFLAGS-$(CONFIG_PPC64) += $(call cc-option,-mabi=elfv2,-mcall-aixdesc)
AFLAGS-$(CONFIG_PPC64) += $(call cc-option,-mabi=elfv2)
@@ -160,7 +160,8 @@ asinstr := $(call as-instr,lis 9$(comma)foo@high,-DHAVE_AS_ATHIGH=1)
KBUILD_CPPFLAGS += -Iarch/$(ARCH) $(asinstr)
KBUILD_AFLAGS += -Iarch/$(ARCH) $(AFLAGS-y)
-KBUILD_CFLAGS += -msoft-float -pipe -Iarch/$(ARCH) $(CFLAGS-y)
+KBUILD_CFLAGS += $(call cc-option,-msoft-float)
+KBUILD_CFLAGS += -pipe -Iarch/$(ARCH) $(CFLAGS-y)
CPP = $(CC) -E $(KBUILD_CFLAGS)
CHECKFLAGS += -m$(CONFIG_WORD_SIZE) -D__powerpc__ -D__powerpc$(CONFIG_WORD_SIZE)__
@@ -192,7 +193,7 @@ KBUILD_CFLAGS += $(call cc-option,-fno-dwarf2-cfi-asm)
# Never use string load/store instructions as they are
# often slow when they are implemented at all
-KBUILD_CFLAGS += -mno-string
+KBUILD_CFLAGS += $(call cc-option,-mno-string)
ifeq ($(CONFIG_6xx),y)
KBUILD_CFLAGS += -mcpu=powerpc