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MIPS: vdso: Allow clang's --target flag in VDSO cflags

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The MIPS VDSO code filters out a subset of known-good flags from
KBUILD_CFLAGS to use when building VDSO libraries. When we build using
clang we need to allow the --target flag through, otherwise we'll
generally attempt to build the VDSO for the architecture of the build
machine rather than for MIPS.

Signed-off-by: Paul Burton <paul.burton@mips.com>
Patchwork: https://patchwork.linux-mips.org/patch/20154/
Cc: James Hogan <jhogan@kernel.org>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: linux-mips@linux-mips.org
This commit is contained in:
Paul Burton 2018-08-06 15:24:27 -07:00
parent 4467f7ad7d
commit ee67855ecd
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1 changed files with 5 additions and 0 deletions
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5
arch/mips/vdso/Makefile
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@ -9,6 +9,11 @@ ccflags-vdso := \
$(filter -mmicromips,$(KBUILD_CFLAGS)) \
$(filter -march=%,$(KBUILD_CFLAGS)) \
-D__VDSO__
ifeq ($(cc-name),clang)
ccflags-vdso += $(filter --target=%,$(KBUILD_CFLAGS))
endif
cflags-vdso := $(ccflags-vdso) \
$(filter -W%,$(filter-out -Wa$(comma)%,$(KBUILD_CFLAGS))) \
-O2 -g -fPIC -fno-strict-aliasing -fno-common -fno-builtin -G 0 \