config.mk revision 02cefc93a8b7555dd5e45f39348ab1473192983b
1## Clang configurations. 2 3# WITHOUT_CLANG covers both HOST and TARGET 4ifeq ($(WITHOUT_CLANG),true) 5WITHOUT_TARGET_CLANG := true 6WITHOUT_HOST_CLANG := true 7endif 8 9ifeq (true,$(FORCE_BUILD_LLVM_COMPONENTS)) 10LLVM_PREBUILTS_PATH := $(BUILD_OUT_EXECUTABLES) 11LLVM_PREBUILTS_HEADER_PATH := external/clang/lib/include 12else 13LLVM_PREBUILTS_PATH := prebuilts/clang/$(BUILD_OS)-x86/host/3.4/bin 14LLVM_PREBUILTS_HEADER_PATH := prebuilts/clang/$(BUILD_OS)-x86/host/3.4/lib/clang/3.4/include/ 15endif 16 17CLANG := $(LLVM_PREBUILTS_PATH)/clang$(BUILD_EXECUTABLE_SUFFIX) 18CLANG_CXX := $(LLVM_PREBUILTS_PATH)/clang++$(BUILD_EXECUTABLE_SUFFIX) 19CLANG_TBLGEN := $(LLVM_PREBUILTS_PATH)/clang-tblgen$(BUILD_EXECUTABLE_SUFFIX) 20LLVM_AS := $(LLVM_PREBUILTS_PATH)/llvm-as$(BUILD_EXECUTABLE_SUFFIX) 21LLVM_LINK := $(LLVM_PREBUILTS_PATH)/llvm-link$(BUILD_EXECUTABLE_SUFFIX) 22TBLGEN := $(LLVM_PREBUILTS_PATH)/tblgen$(BUILD_EXECUTABLE_SUFFIX) 23 24 25# Clang flags for all host or target rules 26CLANG_CONFIG_EXTRA_ASFLAGS := 27CLANG_CONFIG_EXTRA_CFLAGS := 28CLANG_CONFIG_EXTRA_CPPFLAGS := 29CLANG_CONFIG_EXTRA_LDFLAGS := 30 31CLANG_CONFIG_EXTRA_CFLAGS := \ 32 -D__compiler_offsetof=__builtin_offsetof 33 34CLANG_CONFIG_UNKNOWN_CFLAGS := \ 35 -funswitch-loops \ 36 -Wno-psabi \ 37 -Wno-unused-but-set-variable \ 38 -Wno-unused-but-set-parameter 39 40# Clang flags for all host rules 41CLANG_CONFIG_HOST_EXTRA_ASFLAGS := --gcc-toolchain=$(HOST_TOOLCHAIN_FOR_CLANG) 42CLANG_CONFIG_HOST_EXTRA_CFLAGS := --gcc-toolchain=$(HOST_TOOLCHAIN_FOR_CLANG) 43CLANG_CONFIG_HOST_EXTRA_CPPFLAGS := --gcc-toolchain=$(HOST_TOOLCHAIN_FOR_CLANG) 44CLANG_CONFIG_HOST_EXTRA_LDFLAGS := --gcc-toolchain=$(HOST_TOOLCHAIN_FOR_CLANG) 45 46# Clang flags for all target rules 47CLANG_CONFIG_TARGET_EXTRA_ASFLAGS := 48CLANG_CONFIG_TARGET_EXTRA_CFLAGS := -nostdlibinc 49CLANG_CONFIG_TARGET_EXTRA_CPPFLAGS := -nostdlibinc 50CLANG_CONFIG_TARGET_EXTRA_LDFLAGS := 51 52# HOST config 53ifneq ($(strip $(BUILD_HOST_64bit)),) 54include $(BUILD_SYSTEM)/clang/HOST_x86_64.mk 55else 56include $(BUILD_SYSTEM)/clang/HOST_$(HOST_ARCH).mk 57endif 58 59# TARGET config 60clang_2nd_arch_prefix := 61include $(BUILD_SYSTEM)/clang/TARGET_$(TARGET_ARCH).mk 62 63# TARGET_2ND_ARCH config 64ifdef TARGET_2ND_ARCH 65clang_2nd_arch_prefix := $(TARGET_2ND_ARCH_VAR_PREFIX) 66include $(BUILD_SYSTEM)/clang/TARGET_$(TARGET_2ND_ARCH).mk 67endif 68 69 70# Clang compiler-specific libc headers 71CLANG_CONFIG_EXTRA_HOST_C_INCLUDES := $(LLVM_PREBUILTS_HEADER_PATH) 72CLANG_CONFIG_EXTRA_TARGET_C_INCLUDES := $(LLVM_PREBUILTS_HEADER_PATH) $(TARGET_OUT_HEADERS)/clang 73 74# Address sanitizer clang config 75ADDRESS_SANITIZER_CONFIG_EXTRA_CFLAGS := -fsanitize=address 76ADDRESS_SANITIZER_CONFIG_EXTRA_LDFLAGS := -Wl,-u,__asan_preinit 77ADDRESS_SANITIZER_CONFIG_EXTRA_SHARED_LIBRARIES := libdl libasan_preload 78ADDRESS_SANITIZER_CONFIG_EXTRA_STATIC_LIBRARIES := libasan 79 80# This allows us to use the superset of functionality that compiler-rt 81# provides to Clang (for supporting features like -ftrapv). 82COMPILER_RT_CONFIG_EXTRA_STATIC_LIBRARIES := libcompiler_rt-extras 83