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powerpc/vdso: Remove unused '-s' flag from ASFLAGS

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When clang's -Qunused-arguments is dropped from KBUILD_CPPFLAGS, it
warns:

  clang-16: error: argument unused during compilation: '-s' [-Werror,-Wunused-command-line-argument]

The compiler's '-s' flag is a linking option (it is passed along to the
linker directly), which means it does nothing when the linker is not
invoked by the compiler. The kernel builds all .o files with '-c', which
stops the compilation pipeline before linking, so '-s' can be safely
dropped from ASFLAGS.

Signed-off-by: Nathan Chancellor <nathan@kernel.org>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
Reviewed-by: Segher Boessenkool <segher@kernel.crashing.org>
Tested-by: Linux Kernel Functional Testing <lkft@linaro.org>
Tested-by: Anders Roxell <anders.roxell@linaro.org>
Acked-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
This commit is contained in:
Nathan Chancellor 2023-01-11 20:05:03 -07:00 committed by Masahiro Yamada
parent 31f48f1626
commit 024734d132
1 changed files with 2 additions and 2 deletions
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4
arch/powerpc/kernel/vdso/Makefile
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@ -51,10 +51,10 @@ ccflags-y := -shared -fno-common -fno-builtin -nostdlib -Wl,--hash-style=both
ccflags-$(CONFIG_LD_IS_LLD) += $(call cc-option,--ld-path=$(LD),-fuse-ld=lld)
CC32FLAGS := -Wl,-soname=linux-vdso32.so.1 -m32
AS32FLAGS := -D__VDSO32__ -s
AS32FLAGS := -D__VDSO32__
CC64FLAGS := -Wl,-soname=linux-vdso64.so.1
AS64FLAGS := -D__VDSO64__ -s
AS64FLAGS := -D__VDSO64__
targets += vdso32.lds
CPPFLAGS_vdso32.lds += -P -C -Upowerpc