[PATCH v2 1/5] powerpc/Makefiles: Fix clang/llvm build
From: Joel Stanley <joel@jms.id.au>
Date: 2018-09-14 04:07:14
Subsystem:
linux for powerpc (32-bit and 64-bit), the rest · Maintainers:
Madhavan Srinivasan, Linus Torvalds
From: Anton Blanchard <redacted>
Commit 15a3204d24a3 ("powerpc/64s: Set assembler machine type to POWER4")
passes -mpower4 to the assembler. We have more recent instructions in our
assembly files, but gas permits them. The clang/llvm integrated assembler
is more strict, and we get a build failure.
Fix this by calling the assembler with -mcpu=power8 if as supports it,
else fall back to power4.
Suggested-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Anton Blanchard <redacted>
Signed-off-by: Joel Stanley <joel@jms.id.au>
---
arch/powerpc/Makefile | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/powerpc/Makefile b/arch/powerpc/Makefile
index 11a1acba164a..a70639482053 100644
--- a/arch/powerpc/Makefile
+++ b/arch/powerpc/Makefile@@ -238,7 +238,7 @@ cpu-as-$(CONFIG_4xx) += -Wa,-m405 cpu-as-$(CONFIG_ALTIVEC) += $(call as-option,-Wa$(comma)-maltivec) cpu-as-$(CONFIG_E200) += -Wa,-me200 cpu-as-$(CONFIG_E500) += -Wa,-me500 -cpu-as-$(CONFIG_PPC_BOOK3S_64) += -Wa,-mpower4 +cpu-as-$(CONFIG_PPC_BOOK3S_64) += $(call as-option,-Wa$(comma)-mpower8,-Wa$(comma)-mpower4) cpu-as-$(CONFIG_PPC_E500MC) += $(call as-option,-Wa$(comma)-me500mc) KBUILD_AFLAGS += $(cpu-as-y)
--
2.17.1