config.mk revision 2d6d5c6e536384fa750fc2d5bd7e7baf6c826ac4
1## Clang configurations. 2 3LLVM_PREBUILTS_VERSION ?= 3.8 4LLVM_PREBUILTS_BASE ?= prebuilts/clang/host 5LLVM_PREBUILTS_PATH := $(LLVM_PREBUILTS_BASE)/$(BUILD_OS)-x86/$(LLVM_PREBUILTS_VERSION)/bin 6LLVM_RTLIB_PATH := $(LLVM_PREBUILTS_PATH)/../lib/clang/$(LLVM_PREBUILTS_VERSION)/lib/linux/ 7 8CLANG := $(LLVM_PREBUILTS_PATH)/clang$(BUILD_EXECUTABLE_SUFFIX) 9CLANG_CXX := $(LLVM_PREBUILTS_PATH)/clang++$(BUILD_EXECUTABLE_SUFFIX) 10LLVM_AS := $(LLVM_PREBUILTS_PATH)/llvm-as$(BUILD_EXECUTABLE_SUFFIX) 11LLVM_LINK := $(LLVM_PREBUILTS_PATH)/llvm-link$(BUILD_EXECUTABLE_SUFFIX) 12 13CLANG_TBLGEN := $(BUILD_OUT_EXECUTABLES)/clang-tblgen$(BUILD_EXECUTABLE_SUFFIX) 14LLVM_TBLGEN := $(BUILD_OUT_EXECUTABLES)/llvm-tblgen$(BUILD_EXECUTABLE_SUFFIX) 15 16# Clang flags for all host or target rules 17CLANG_CONFIG_EXTRA_ASFLAGS := 18CLANG_CONFIG_EXTRA_CFLAGS := 19CLANG_CONFIG_EXTRA_CONLYFLAGS := -std=gnu99 20CLANG_CONFIG_EXTRA_CPPFLAGS := 21CLANG_CONFIG_EXTRA_LDFLAGS := 22 23CLANG_CONFIG_EXTRA_CFLAGS += \ 24 -D__compiler_offsetof=__builtin_offsetof 25 26# Help catch common 32/64-bit errors. 27CLANG_CONFIG_EXTRA_CFLAGS += \ 28 -Werror=int-conversion 29 30# Disable overly aggressive warning for macros defined with a leading underscore 31# This used to happen in AndroidConfig.h, which was included everywhere. 32# TODO: can we remove this now? 33CLANG_CONFIG_EXTRA_CFLAGS += \ 34 -Wno-reserved-id-macro 35 36# Disable overly aggressive warning for format strings. 37# Bug: 20148343 38CLANG_CONFIG_EXTRA_CFLAGS += \ 39 -Wno-format-pedantic 40 41# Workaround for ccache with clang. 42# See http://petereisentraut.blogspot.com/2011/05/ccache-and-clang.html. 43CLANG_CONFIG_EXTRA_CFLAGS += \ 44 -Wno-unused-command-line-argument 45 46# Disable -Winconsistent-missing-override until we can clean up the existing 47# codebase for it. 48CLANG_CONFIG_EXTRA_CPPFLAGS += \ 49 -Wno-inconsistent-missing-override 50 51# Force clang to always output color diagnostics. Ninja will strip the ANSI 52# color codes if it is not running in a terminal. 53CLANG_CONFIG_EXTRA_CFLAGS += \ 54 -fcolor-diagnostics 55 56CLANG_CONFIG_UNKNOWN_CFLAGS := \ 57 -finline-functions \ 58 -finline-limit=64 \ 59 -fno-canonical-system-headers \ 60 -Wno-clobbered \ 61 -fno-devirtualize \ 62 -fno-tree-sra \ 63 -fprefetch-loop-arrays \ 64 -funswitch-loops \ 65 -Werror=unused-but-set-parameter \ 66 -Werror=unused-but-set-variable \ 67 -Wmaybe-uninitialized \ 68 -Wno-error=clobbered \ 69 -Wno-error=maybe-uninitialized \ 70 -Wno-error=unused-but-set-parameter \ 71 -Wno-error=unused-but-set-variable \ 72 -Wno-free-nonheap-object \ 73 -Wno-literal-suffix \ 74 -Wno-maybe-uninitialized \ 75 -Wno-old-style-declaration \ 76 -Wno-psabi \ 77 -Wno-unused-but-set-parameter \ 78 -Wno-unused-but-set-variable \ 79 -Wno-unused-local-typedefs \ 80 -Wunused-but-set-parameter \ 81 -Wunused-but-set-variable \ 82 -fdiagnostics-color \ 83 -fdebug-prefix-map=/proc/self/cwd= 84 85# Clang flags for all host rules 86CLANG_CONFIG_HOST_EXTRA_ASFLAGS := 87CLANG_CONFIG_HOST_EXTRA_CFLAGS := 88CLANG_CONFIG_HOST_EXTRA_CPPFLAGS := 89CLANG_CONFIG_HOST_EXTRA_LDFLAGS := 90 91# Clang flags for all host cross rules 92CLANG_CONFIG_HOST_CROSS_EXTRA_ASFLAGS := 93CLANG_CONFIG_HOST_CROSS_EXTRA_CFLAGS := 94CLANG_CONFIG_HOST_CROSS_EXTRA_CPPFLAGS := 95CLANG_CONFIG_HOST_CROSS_EXTRA_LDFLAGS := 96 97# Clang flags for all target rules 98CLANG_CONFIG_TARGET_EXTRA_ASFLAGS := 99CLANG_CONFIG_TARGET_EXTRA_CFLAGS := -nostdlibinc 100CLANG_CONFIG_TARGET_EXTRA_CPPFLAGS := -nostdlibinc 101CLANG_CONFIG_TARGET_EXTRA_LDFLAGS := 102 103CLANG_DEFAULT_UB_CHECKS := \ 104 bool \ 105 integer-divide-by-zero \ 106 return \ 107 returns-nonnull-attribute \ 108 shift-exponent \ 109 unreachable \ 110 vla-bound \ 111 112# TODO(danalbert): The following checks currently have compiler performance 113# issues. 114# CLANG_DEFAULT_UB_CHECKS += alignment 115# CLANG_DEFAULT_UB_CHECKS += bounds 116# CLANG_DEFAULT_UB_CHECKS += enum 117# CLANG_DEFAULT_UB_CHECKS += float-cast-overflow 118# CLANG_DEFAULT_UB_CHECKS += float-divide-by-zero 119# CLANG_DEFAULT_UB_CHECKS += nonnull-attribute 120# CLANG_DEFAULT_UB_CHECKS += null 121# CLANG_DEFAULT_UB_CHECKS += shift-base 122# CLANG_DEFAULT_UB_CHECKS += signed-integer-overflow 123 124# TODO(danalbert): Fix UB in libc++'s __tree so we can turn this on. 125# https://llvm.org/PR19302 126# http://reviews.llvm.org/D6974 127# CLANG_DEFAULT_UB_CHECKS += object-size 128 129# HOST config 130clang_2nd_arch_prefix := 131include $(BUILD_SYSTEM)/clang/HOST_$(HOST_ARCH).mk 132 133# HOST_2ND_ARCH config 134ifdef HOST_2ND_ARCH 135clang_2nd_arch_prefix := $(HOST_2ND_ARCH_VAR_PREFIX) 136include $(BUILD_SYSTEM)/clang/HOST_$(HOST_2ND_ARCH).mk 137endif 138 139ifdef HOST_CROSS_OS 140include $(BUILD_SYSTEM)/clang/HOST_CROSS_$(HOST_CROSS_OS).mk 141endif 142 143# TARGET config 144clang_2nd_arch_prefix := 145include $(BUILD_SYSTEM)/clang/TARGET_$(TARGET_ARCH).mk 146 147# TARGET_2ND_ARCH config 148ifdef TARGET_2ND_ARCH 149clang_2nd_arch_prefix := $(TARGET_2ND_ARCH_VAR_PREFIX) 150include $(BUILD_SYSTEM)/clang/TARGET_$(TARGET_2ND_ARCH).mk 151endif 152 153ADDRESS_SANITIZER_CONFIG_EXTRA_CFLAGS := -fno-omit-frame-pointer 154ADDRESS_SANITIZER_CONFIG_EXTRA_LDFLAGS := -Wl,-u,__asan_preinit 155 156ADDRESS_SANITIZER_CONFIG_EXTRA_SHARED_LIBRARIES := 157ADDRESS_SANITIZER_CONFIG_EXTRA_STATIC_LIBRARIES := libasan 158 159# This allows us to use the superset of functionality that compiler-rt 160# provides to Clang (for supporting features like -ftrapv). 161COMPILER_RT_CONFIG_EXTRA_STATIC_LIBRARIES := libcompiler_rt-extras 162 163ifeq ($(HOST_PREFER_32_BIT),true) 164# We don't have 32-bit prebuilt libLLVM/libclang, so force to build them from source. 165FORCE_BUILD_LLVM_COMPONENTS := true 166endif 167