From: Anton Blanchard <anton@samba.org>
To: benh@kernel.crashing.org, paulus@samba.org, mpe@ellerman.id.au,
behanw@converseincode.com
Cc: linuxppc-dev@lists.ozlabs.org
Subject: [PATCH 3/6] powerpc: Only use -mtraceback=no, -mno-string and -msoft-float if toolchain supports it
Date: Tue, 26 May 2015 08:53:27 +1000 [thread overview]
Message-ID: <1432594410-31198-4-git-send-email-anton@samba.org> (raw)
In-Reply-To: <1432594410-31198-1-git-send-email-anton@samba.org>
These options are not recognised on LLVM, so use call cc-option to check
for support.
Signed-off-by: Anton Blanchard <anton@samba.org>
---
arch/powerpc/Makefile | 7 ++++---
1 file changed, 4 insertions(+), 3 deletions(-)
diff --git a/arch/powerpc/Makefile b/arch/powerpc/Makefile
index 7a0daad..7c08b4e 100644
--- a/arch/powerpc/Makefile
+++ b/arch/powerpc/Makefile
@@ -111,7 +111,7 @@ 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)
@@ -158,7 +158,8 @@ 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)__
@@ -190,7 +191,7 @@ 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
--
2.1.4
next prev parent reply other threads:[~2015-05-25 22:53 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-05-25 22:53 [PATCH 0/6] Build ppc64le kernel with llvm/clang Anton Blanchard
2015-05-25 22:53 ` [PATCH 1/6] powerpc: Fix duplicate const clang warning in user access code Anton Blanchard
2015-05-25 22:53 ` [PATCH 2/6] powerpc: Only use -mabi=altivec if toolchain supports it Anton Blanchard
2015-05-25 22:53 ` Anton Blanchard [this message]
2015-05-25 22:53 ` [PATCH 4/6] powerpc: Don't use -mno-strict-align on clang Anton Blanchard
2015-05-25 22:53 ` [PATCH 5/6] powerpc: Don't use gcc specific options " Anton Blanchard
2015-05-25 22:53 ` [PATCH 6/6] llvm: A few Makefile hacks Anton Blanchard
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