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| author | Paul Burton <paul.burton@mips.com> | 2018-08-06 15:24:27 -0700 |
|---|---|---|
| committer | Paul Burton <paul.burton@mips.com> | 2018-08-06 15:53:33 -0700 |
| commit | ee67855ecd9d02da348af11ec8474698b886a0e6 (patch) | |
| tree | 1c5d74afd7dbbae3167eb2f59d0703965eb9e3fe | |
| parent | 4467f7ad7dbb0af5136fadb32dba37bc0388194f (diff) | |
| download | lwn-ee67855ecd9d02da348af11ec8474698b886a0e6.tar.gz lwn-ee67855ecd9d02da348af11ec8474698b886a0e6.zip | |
MIPS: vdso: Allow clang's --target flag in VDSO cflags
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
| -rw-r--r-- | arch/mips/vdso/Makefile | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/arch/mips/vdso/Makefile b/arch/mips/vdso/Makefile index 477c463c89ec..bd79b27faa2b 100644 --- a/arch/mips/vdso/Makefile +++ b/arch/mips/vdso/Makefile @@ -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 \ |