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| author | Paul Burton <paul.burton@mips.com> | 2018-08-07 16:09:56 -0700 |
|---|---|---|
| committer | Paul Burton <paul.burton@mips.com> | 2018-08-07 16:16:13 -0700 |
| commit | 2f0025675fe51a353e308c38fc7ee0ad75151ef2 (patch) | |
| tree | 9bd23270eb0165a14e9ba3b47396703ed14dc37c | |
| parent | c6d6f4c55f5cda5a7fa5a08eede0eb289937c328 (diff) | |
| download | linux-2f0025675fe51a353e308c38fc7ee0ad75151ef2.tar.bz2 | |
MIPS: VDSO: Force link endianness
When building the VDSO with clang it appears to invoke ld without
specifying endianness, even though clang itself was provided with a -EB
or -EL flag. This results in the build failing due to a mismatch between
the objects that are the input to ld, and the output it is attempting to
create:
VDSO arch/mips/vdso/vdso.so.dbg.raw
mips-linux-ld: arch/mips/vdso/elf.o: compiled for a big endian system
and target is little endian
mips-linux-ld: arch/mips/vdso/elf.o: endianness incompatible with that
of the selected emulation
mips-linux-ld: failed to merge target specific data of file
arch/mips/vdso/elf.o
...
Work around this problem by explicitly specifying the link endianness
using -Wl,-EB or -Wl,-EL when -EB or -EL are part of KBUILD_CFLAGS. This
resolves the build failure when using clang, and doesn't have any
negative effect on gcc.
Signed-off-by: Paul Burton <paul.burton@mips.com>
| -rw-r--r-- | arch/mips/vdso/Makefile | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/mips/vdso/Makefile b/arch/mips/vdso/Makefile index bd79b27faa2b..34605ca21498 100644 --- a/arch/mips/vdso/Makefile +++ b/arch/mips/vdso/Makefile @@ -44,6 +44,7 @@ endif # VDSO linker flags. VDSO_LDFLAGS := \ -Wl,-Bsymbolic -Wl,--no-undefined -Wl,-soname=linux-vdso.so.1 \ + $(addprefix -Wl$(comma),$(filter -E%,$(KBUILD_CFLAGS))) \ -nostdlib -shared \ $(call cc-ldoption, -Wl$(comma)--hash-style=sysv) \ $(call cc-ldoption, -Wl$(comma)--build-id) |