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ddc72c9659
The target triple is overridden by the user-supplied CROSS_COMPILE, but I do not see a good reason to support it. Users can use a new architecture without adding CLANG_TARGET_FLAGS_*, but that would be a rare case. Use the hard-coded and deterministic target triple all the time. Signed-off-by: Masahiro Yamada <masahiroy@kernel.org> Acked-by: Nathan Chancellor <nathan@kernel.org> Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
40 lines
1.6 KiB
Makefile
40 lines
1.6 KiB
Makefile
# Individual arch/{arch}/Makefiles should use -EL/-EB to set intended
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# endianness and -m32/-m64 to set word size based on Kconfigs instead of
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# relying on the target triple.
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CLANG_TARGET_FLAGS_arm := arm-linux-gnueabi
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CLANG_TARGET_FLAGS_arm64 := aarch64-linux-gnu
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CLANG_TARGET_FLAGS_hexagon := hexagon-linux-musl
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CLANG_TARGET_FLAGS_m68k := m68k-linux-gnu
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CLANG_TARGET_FLAGS_mips := mipsel-linux-gnu
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CLANG_TARGET_FLAGS_powerpc := powerpc64le-linux-gnu
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CLANG_TARGET_FLAGS_riscv := riscv64-linux-gnu
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CLANG_TARGET_FLAGS_s390 := s390x-linux-gnu
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CLANG_TARGET_FLAGS_x86 := x86_64-linux-gnu
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CLANG_TARGET_FLAGS_um := $(CLANG_TARGET_FLAGS_$(SUBARCH))
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CLANG_TARGET_FLAGS := $(CLANG_TARGET_FLAGS_$(SRCARCH))
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ifeq ($(CLANG_TARGET_FLAGS),)
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$(error add '--target=' option to scripts/Makefile.clang)
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else
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CLANG_FLAGS += --target=$(CLANG_TARGET_FLAGS)
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endif
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ifeq ($(LLVM_IAS),0)
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CLANG_FLAGS += -fno-integrated-as
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GCC_TOOLCHAIN_DIR := $(dir $(shell which $(CROSS_COMPILE)elfedit))
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CLANG_FLAGS += --prefix=$(GCC_TOOLCHAIN_DIR)$(notdir $(CROSS_COMPILE))
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else
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CLANG_FLAGS += -fintegrated-as
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endif
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# By default, clang only warns when it encounters an unknown warning flag or
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# certain optimization flags it knows it has not implemented.
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# Make it behave more like gcc by erroring when these flags are encountered
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# so they can be implemented or wrapped in cc-option.
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CLANG_FLAGS += -Werror=unknown-warning-option
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CLANG_FLAGS += -Werror=ignored-optimization-argument
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CLANG_FLAGS += -Werror=option-ignored
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CLANG_FLAGS += -Werror=unused-command-line-argument
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KBUILD_CFLAGS += $(CLANG_FLAGS)
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KBUILD_AFLAGS += $(CLANG_FLAGS)
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export CLANG_FLAGS
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