From: Joel Stanley <joel@jms.id.au>
To: Anton Blanchard <anton@ozlabs.org>,
benh@kernel.crashing.org, paulus@samba.org, mpe@ellerman.id.au,
npiggin@gmail.com
Cc: linuxppc-dev@lists.ozlabs.org
Subject: [PATCH v2] powerpc/Makefiles: Fix clang/llvm build
Date: Thu, 6 Sep 2018 17:07:10 +1000 [thread overview]
Message-ID: <20180906070710.29944-1-joel@jms.id.au> (raw)
From: Anton Blanchard <anton@samba.org>
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 <anton@samba.org>
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
reply other threads:[~2018-09-06 7:07 UTC|newest]
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