powerpc: Avoid -maltivec when using clang integrated assembler

Check the assembler supports -maltivec by wrapping it with
call as-option.

Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>

diff --git a/arch/powerpc/Makefile b/arch/powerpc/Makefile
index 709a22a..b41f4c6 100644 (file)
--- a/arch/powerpc/Makefile
+++ b/arch/powerpc/Makefile
@@ -221,7 +221,7 @@ KBUILD_CFLAGS               += -mno-sched-epilog
 endif
 
 cpu-as-$(CONFIG_4xx)           += -Wa,-m405
-cpu-as-$(CONFIG_ALTIVEC)       += -Wa,-maltivec
+cpu-as-$(CONFIG_ALTIVEC)       += $(call as-option,-Wa$(comma)-maltivec)
 cpu-as-$(CONFIG_E200)          += -Wa,-me200
 
 KBUILD_AFLAGS += $(cpu-as-y)