# 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_x86 := x86_64-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