1# Individual arch/{arch}/Makefiles should use -EL/-EB to set intended
2# endianness and -m32/-m64 to set word size based on Kconfigs instead of
3# relying on the target triple.
4CLANG_TARGET_FLAGS_arm		:= arm-linux-gnueabi
5CLANG_TARGET_FLAGS_arm64	:= aarch64-linux-gnu
6CLANG_TARGET_FLAGS_hexagon	:= hexagon-linux-musl
7CLANG_TARGET_FLAGS_m68k		:= m68k-linux-gnu
8CLANG_TARGET_FLAGS_mips		:= mipsel-linux-gnu
9CLANG_TARGET_FLAGS_powerpc	:= powerpc64le-linux-gnu
10CLANG_TARGET_FLAGS_riscv	:= riscv64-linux-gnu
11CLANG_TARGET_FLAGS_s390		:= s390x-linux-gnu
12CLANG_TARGET_FLAGS_x86		:= x86_64-linux-gnu
13CLANG_TARGET_FLAGS_um		:= $(CLANG_TARGET_FLAGS_$(SUBARCH))
14CLANG_TARGET_FLAGS		:= $(CLANG_TARGET_FLAGS_$(SRCARCH))
15
16ifeq ($(CROSS_COMPILE),)
17ifeq ($(CLANG_TARGET_FLAGS),)
18$(error Specify CROSS_COMPILE or add '--target=' option to scripts/Makefile.clang)
19else
20CLANG_FLAGS	+= --target=$(CLANG_TARGET_FLAGS)
21endif # CLANG_TARGET_FLAGS
22else
23CLANG_FLAGS	+= --target=$(notdir $(CROSS_COMPILE:%-=%))
24endif # CROSS_COMPILE
25
26ifeq ($(LLVM_IAS),0)
27CLANG_FLAGS	+= -fno-integrated-as
28GCC_TOOLCHAIN_DIR := $(dir $(shell which $(CROSS_COMPILE)elfedit))
29CLANG_FLAGS	+= --prefix=$(GCC_TOOLCHAIN_DIR)$(notdir $(CROSS_COMPILE))
30else
31CLANG_FLAGS	+= -fintegrated-as
32endif
33# By default, clang only warns when it encounters an unknown warning flag or
34# certain optimization flags it knows it has not implemented.
35# Make it behave more like gcc by erroring when these flags are encountered
36# so they can be implemented or wrapped in cc-option.
37CLANG_FLAGS	+= -Werror=unknown-warning-option
38CLANG_FLAGS	+= -Werror=ignored-optimization-argument
39CLANG_FLAGS	+= -Werror=option-ignored
40CLANG_FLAGS	+= -Werror=unused-command-line-argument
41KBUILD_CFLAGS	+= $(CLANG_FLAGS)
42KBUILD_AFLAGS	+= $(CLANG_FLAGS)
43export CLANG_FLAGS
44