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kbuild: remove AS variable

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As commit 5ef872636c ("kbuild: get rid of misleading $(AS) from
documents") noted, we rarely use $(AS) directly in the kernel build.

Now that the only/last user of $(AS) in drivers/net/wan/Makefile was
converted to $(CC), $(AS) is no longer used in the build process.

You can still pass in AS=clang, which is just a switch to turn on
the LLVM integrated assembler.

Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
Tested-by: Nick Desaulniers <ndesaulniers@google.com>
Reviewed-by: Nathan Chancellor <natechancellor@gmail.com>
This commit is contained in:
Masahiro Yamada 2020-03-26 14:57:18 +09:00
parent 7d7df745b0
commit aa824e0c96
1 changed files with 2 additions and 3 deletions
repo.diff.show_diff_stats Download patch file Download diff file Expand all files Collapse all files

5
Makefile
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@ -408,7 +408,6 @@ KBUILD_HOSTLDFLAGS := $(HOST_LFS_LDFLAGS) $(HOSTLDFLAGS)
KBUILD_HOSTLDLIBS := $(HOST_LFS_LIBS) $(HOSTLDLIBS) KBUILD_HOSTLDLIBS := $(HOST_LFS_LIBS) $(HOSTLDLIBS)
# Make variables (CC, etc...) # Make variables (CC, etc...)
AS = $(CROSS_COMPILE)as
LD = $(CROSS_COMPILE)ld LD = $(CROSS_COMPILE)ld
CC = $(CROSS_COMPILE)gcc CC = $(CROSS_COMPILE)gcc
CPP = $(CC) -E CPP = $(CC) -E
@ -475,7 +474,7 @@ KBUILD_LDFLAGS :=
GCC_PLUGINS_CFLAGS := GCC_PLUGINS_CFLAGS :=
CLANG_FLAGS := CLANG_FLAGS :=
export ARCH SRCARCH CONFIG_SHELL BASH HOSTCC KBUILD_HOSTCFLAGS CROSS_COMPILE AS LD CC export ARCH SRCARCH CONFIG_SHELL BASH HOSTCC KBUILD_HOSTCFLAGS CROSS_COMPILE LD CC
export CPP AR NM STRIP OBJCOPY OBJDUMP OBJSIZE READELF PAHOLE LEX YACC AWK INSTALLKERNEL export CPP AR NM STRIP OBJCOPY OBJDUMP OBJSIZE READELF PAHOLE LEX YACC AWK INSTALLKERNEL
export PERL PYTHON PYTHON3 CHECK CHECKFLAGS MAKE UTS_MACHINE HOSTCXX export PERL PYTHON PYTHON3 CHECK CHECKFLAGS MAKE UTS_MACHINE HOSTCXX
export KBUILD_HOSTCXXFLAGS KBUILD_HOSTLDFLAGS KBUILD_HOSTLDLIBS LDFLAGS_MODULE export KBUILD_HOSTCXXFLAGS KBUILD_HOSTLDFLAGS KBUILD_HOSTLDLIBS LDFLAGS_MODULE
@ -538,7 +537,7 @@ endif
ifneq ($(GCC_TOOLCHAIN),) ifneq ($(GCC_TOOLCHAIN),)
CLANG_FLAGS += --gcc-toolchain=$(GCC_TOOLCHAIN) CLANG_FLAGS += --gcc-toolchain=$(GCC_TOOLCHAIN)
endif endif
ifeq ($(shell $(AS) --version 2>&1 | head -n 1 | grep clang),) ifeq ($(if $(AS),$(shell $(AS) --version 2>&1 | head -n 1 | grep clang)),)
CLANG_FLAGS += -no-integrated-as CLANG_FLAGS += -no-integrated-as
endif endif
CLANG_FLAGS += -Werror=unknown-warning-option CLANG_FLAGS += -Werror=unknown-warning-option