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- # Individual arch/{arch}/Makefiles should use -EL/-EB to set intended
- # endianness and -m32/-m64 to set word size based on Kconfigs instead of
- # relying on the target triple.
- CLANG_TARGET_FLAGS_arm := arm-linux-gnueabi
- CLANG_TARGET_FLAGS_arm64 := aarch64-linux-gnu
- CLANG_TARGET_FLAGS_hexagon := hexagon-linux-musl
- CLANG_TARGET_FLAGS_loongarch := loongarch64-linux-gnusf
- CLANG_TARGET_FLAGS_m68k := m68k-linux-gnu
- CLANG_TARGET_FLAGS_mips := mipsel-linux-gnu
- CLANG_TARGET_FLAGS_powerpc := powerpc64le-linux-gnu
- CLANG_TARGET_FLAGS_riscv := riscv64-linux-gnu
- CLANG_TARGET_FLAGS_s390 := s390x-linux-gnu
- CLANG_TARGET_FLAGS_sparc := sparc64-linux-gnu
- CLANG_TARGET_FLAGS_x86 := x86_64-linux-gnu
- # This is only for i386 UM builds, which need the 32-bit target not -m32
- CLANG_TARGET_FLAGS_i386 := i386-linux-gnu
- CLANG_TARGET_FLAGS_um := $(CLANG_TARGET_FLAGS_$(SUBARCH))
- CLANG_TARGET_FLAGS := $(CLANG_TARGET_FLAGS_$(SRCARCH))
- ifeq ($(CLANG_TARGET_FLAGS),)
- $(error add '--target=' option to scripts/Makefile.clang)
- else
- CLANG_FLAGS += --target=$(CLANG_TARGET_FLAGS)
- endif
- ifeq ($(LLVM_IAS),0)
- CLANG_FLAGS += -fno-integrated-as
- GCC_TOOLCHAIN_DIR := $(dir $(shell which $(CROSS_COMPILE)elfedit))
- CLANG_FLAGS += --prefix=$(GCC_TOOLCHAIN_DIR)$(notdir $(CROSS_COMPILE))
- else
- CLANG_FLAGS += -fintegrated-as
- endif
- # By default, clang only warns when it encounters an unknown warning flag or
- # certain optimization flags it knows it has not implemented.
- # Make it behave more like gcc by erroring when these flags are encountered
- # so they can be implemented or wrapped in cc-option.
- CLANG_FLAGS += -Werror=unknown-warning-option
- CLANG_FLAGS += -Werror=ignored-optimization-argument
- CLANG_FLAGS += -Werror=option-ignored
- CLANG_FLAGS += -Werror=unused-command-line-argument
- KBUILD_CPPFLAGS += $(CLANG_FLAGS)
- export CLANG_FLAGS
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