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## Clang configurations.
# WITHOUT_CLANG covers both HOST and TARGET
ifeq ($(WITHOUT_CLANG),true)
WITHOUT_TARGET_CLANG := true
WITHOUT_HOST_CLANG := true
endif
LLVM_PREBUILTS_VERSION := 3.6
LLVM_PREBUILTS_PATH := prebuilts/clang/$(BUILD_OS)-x86/host/$(LLVM_PREBUILTS_VERSION)/bin
LLVM_RTLIB_PATH := $(LLVM_PREBUILTS_PATH)/../lib/clang/$(LLVM_PREBUILTS_VERSION)/lib/linux/
CLANG := $(LLVM_PREBUILTS_PATH)/clang$(BUILD_EXECUTABLE_SUFFIX)
CLANG_CXX := $(LLVM_PREBUILTS_PATH)/clang++$(BUILD_EXECUTABLE_SUFFIX)
LLVM_AS := $(LLVM_PREBUILTS_PATH)/llvm-as$(BUILD_EXECUTABLE_SUFFIX)
LLVM_LINK := $(LLVM_PREBUILTS_PATH)/llvm-link$(BUILD_EXECUTABLE_SUFFIX)
CLANG_TBLGEN := $(BUILD_OUT_EXECUTABLES)/clang-tblgen$(BUILD_EXECUTABLE_SUFFIX)
LLVM_TBLGEN := $(BUILD_OUT_EXECUTABLES)/llvm-tblgen$(BUILD_EXECUTABLE_SUFFIX)
# Clang flags for all host or target rules
CLANG_CONFIG_EXTRA_ASFLAGS :=
CLANG_CONFIG_EXTRA_CFLAGS :=
CLANG_CONFIG_EXTRA_CONLYFLAGS := -std=gnu99
CLANG_CONFIG_EXTRA_CPPFLAGS :=
CLANG_CONFIG_EXTRA_LDFLAGS :=
CLANG_CONFIG_EXTRA_CFLAGS += \
-D__compiler_offsetof=__builtin_offsetof
# Help catch common 32/64-bit errors.
CLANG_CONFIG_EXTRA_CFLAGS += \
-Werror=int-conversion
# Disable overly aggressive warning for macros defined with a leading underscore
# This happens in AndroidConfig.h, which is included nearly everywhere.
CLANG_CONFIG_EXTRA_CFLAGS += \
-Wno-reserved-id-macro
# Disable overly aggressive warning for format strings.
# Bug: 20148343
CLANG_CONFIG_EXTRA_CFLAGS += \
-Wno-format-pedantic
# Workaround for ccache with clang.
# See http://petereisentraut.blogspot.com/2011/05/ccache-and-clang.html.
CLANG_CONFIG_EXTRA_CFLAGS += \
-Wno-unused-command-line-argument
# Disable -Winconsistent-missing-override until we can clean up the existing
# codebase for it.
CLANG_CONFIG_EXTRA_CPPFLAGS += \
-Wno-inconsistent-missing-override
# Force clang to always output color diagnostics. Ninja will strip the ANSI
# color codes if it is not running in a terminal.
CLANG_CONFIG_EXTRA_CFLAGS += \
-fcolor-diagnostics
CLANG_CONFIG_UNKNOWN_CFLAGS := \
-finline-functions \
-finline-limit=64 \
-fno-canonical-system-headers \
-Wno-clobbered \
-fno-devirtualize \
-fno-tree-sra \
-fprefetch-loop-arrays \
-funswitch-loops \
-Werror=unused-but-set-parameter \
-Werror=unused-but-set-variable \
-Wmaybe-uninitialized \
-Wno-error=clobbered \
-Wno-error=maybe-uninitialized \
-Wno-error=unused-but-set-parameter \
-Wno-error=unused-but-set-variable \
-Wno-free-nonheap-object \
-Wno-literal-suffix \
-Wno-maybe-uninitialized \
-Wno-old-style-declaration \
-Wno-psabi \
-Wno-unused-but-set-parameter \
-Wno-unused-but-set-variable \
-Wno-unused-local-typedefs \
-Wunused-but-set-parameter \
-Wunused-but-set-variable \
-fdiagnostics-color
# Clang flags for all host rules
CLANG_CONFIG_HOST_EXTRA_ASFLAGS :=
CLANG_CONFIG_HOST_EXTRA_CFLAGS :=
CLANG_CONFIG_HOST_EXTRA_CPPFLAGS :=
CLANG_CONFIG_HOST_EXTRA_LDFLAGS :=
# Clang flags for all target rules
CLANG_CONFIG_TARGET_EXTRA_ASFLAGS :=
CLANG_CONFIG_TARGET_EXTRA_CFLAGS := -nostdlibinc
CLANG_CONFIG_TARGET_EXTRA_CPPFLAGS := -nostdlibinc
CLANG_CONFIG_TARGET_EXTRA_LDFLAGS :=
CLANG_DEFAULT_UB_CHECKS := \
bool \
integer-divide-by-zero \
return \
returns-nonnull-attribute \
shift-exponent \
unreachable \
vla-bound \
# TODO(danalbert): The following checks currently have compiler performance
# issues.
# CLANG_DEFAULT_UB_CHECKS += alignment
# CLANG_DEFAULT_UB_CHECKS += bounds
# CLANG_DEFAULT_UB_CHECKS += enum
# CLANG_DEFAULT_UB_CHECKS += float-cast-overflow
# CLANG_DEFAULT_UB_CHECKS += float-divide-by-zero
# CLANG_DEFAULT_UB_CHECKS += nonnull-attribute
# CLANG_DEFAULT_UB_CHECKS += null
# CLANG_DEFAULT_UB_CHECKS += shift-base
# CLANG_DEFAULT_UB_CHECKS += signed-integer-overflow
# TODO(danalbert): Fix UB in libc++'s __tree so we can turn this on.
# https://llvm.org/PR19302
# http://reviews.llvm.org/D6974
# CLANG_DEFAULT_UB_CHECKS += object-size
# HOST config
clang_2nd_arch_prefix :=
include $(BUILD_SYSTEM)/clang/HOST_$(HOST_ARCH).mk
# HOST_2ND_ARCH config
ifdef HOST_2ND_ARCH
clang_2nd_arch_prefix := $(HOST_2ND_ARCH_VAR_PREFIX)
include $(BUILD_SYSTEM)/clang/HOST_$(HOST_2ND_ARCH).mk
endif
# TARGET config
clang_2nd_arch_prefix :=
include $(BUILD_SYSTEM)/clang/TARGET_$(TARGET_ARCH).mk
# TARGET_2ND_ARCH config
ifdef TARGET_2ND_ARCH
clang_2nd_arch_prefix := $(TARGET_2ND_ARCH_VAR_PREFIX)
include $(BUILD_SYSTEM)/clang/TARGET_$(TARGET_2ND_ARCH).mk
endif
ADDRESS_SANITIZER_CONFIG_EXTRA_CFLAGS := -fno-omit-frame-pointer
ADDRESS_SANITIZER_CONFIG_EXTRA_LDFLAGS := -Wl,-u,__asan_preinit
ADDRESS_SANITIZER_CONFIG_EXTRA_SHARED_LIBRARIES := libdl
ADDRESS_SANITIZER_CONFIG_EXTRA_STATIC_LIBRARIES := libasan
# This allows us to use the superset of functionality that compiler-rt
# provides to Clang (for supporting features like -ftrapv).
COMPILER_RT_CONFIG_EXTRA_STATIC_LIBRARIES := libcompiler_rt-extras
ifeq ($(HOST_PREFER_32_BIT),true)
# We don't have 32-bit prebuilt libLLVM/libclang, so force to build them from source.
FORCE_BUILD_LLVM_COMPONENTS := true
endif
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