| # 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 |