| # 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_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 ($(CROSS_COMPILE),) |
| ifeq ($(CLANG_TARGET_FLAGS),) |
| $(error Specify CROSS_COMPILE or add '--target=' option to scripts/Makefile.clang) |
| else |
| CLANG_FLAGS += --target=$(CLANG_TARGET_FLAGS) |
| endif # CLANG_TARGET_FLAGS |
| else |
| CLANG_FLAGS += --target=$(notdir $(CROSS_COMPILE:%-=%)) |
| endif # CROSS_COMPILE |
| |
| ifeq ($(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_CFLAGS += $(CLANG_FLAGS) |
| KBUILD_AFLAGS += $(CLANG_FLAGS) |
| export CLANG_FLAGS |
