config.mk revision b169fb78227f4a42ac239c134e547e2fd12991ca 
1## Clang configurations.
2
3# WITHOUT_CLANG covers both HOST and TARGET
4ifeq ($(WITHOUT_CLANG),true)
5WITHOUT_TARGET_CLANG := true
6WITHOUT_HOST_CLANG := true
7endif
8
9LLVM_PREBUILTS_PATH := prebuilts/clang/$(BUILD_OS)-x86/host/3.5/bin
10LLVM_PREBUILTS_HEADER_PATH := prebuilts/clang/$(BUILD_OS)-x86/host/3.5/lib/clang/3.5/include/
11
12CLANG := $(LLVM_PREBUILTS_PATH)/clang$(BUILD_EXECUTABLE_SUFFIX)
13CLANG_CXX := $(LLVM_PREBUILTS_PATH)/clang++$(BUILD_EXECUTABLE_SUFFIX)
14LLVM_AS := $(LLVM_PREBUILTS_PATH)/llvm-as$(BUILD_EXECUTABLE_SUFFIX)
15LLVM_LINK := $(LLVM_PREBUILTS_PATH)/llvm-link$(BUILD_EXECUTABLE_SUFFIX)
16
17CLANG_TBLGEN := $(HOST_OUT_EXECUTABLES)/clang-tblgen$(BUILD_EXECUTABLE_SUFFIX)
18LLVM_TBLGEN := $(HOST_OUT_EXECUTABLES)/llvm-tblgen$(BUILD_EXECUTABLE_SUFFIX)
19
20# The C/C++ compiler can be wrapped by setting the CC/CXX_WRAPPER vars.
21ifdef CC_WRAPPER
22  ifneq ($(CC_WRAPPER),$(firstword $(CLANG)))
23    CLANG := $(CC_WRAPPER) $(CLANG)
24  endif
25endif
26ifdef CXX_WRAPPER
27  ifneq ($(CXX_WRAPPER),$(firstword $(CLANG_CXX)))
28    CLANG_CXX := $(CXX_WRAPPER) $(CLANG_CXX)
29  endif
30endif
31
32# Clang flags for all host or target rules
33CLANG_CONFIG_EXTRA_ASFLAGS :=
34CLANG_CONFIG_EXTRA_CFLAGS :=
35CLANG_CONFIG_EXTRA_CPPFLAGS :=
36CLANG_CONFIG_EXTRA_LDFLAGS :=
37
38CLANG_CONFIG_EXTRA_CFLAGS += \
39  -D__compiler_offsetof=__builtin_offsetof
40
41# Help catch common 32/64-bit errors.
42CLANG_CONFIG_EXTRA_CFLAGS += \
43  -Werror=int-conversion
44
45CLANG_CONFIG_UNKNOWN_CFLAGS := \
46  -funswitch-loops \
47  -fno-tree-sra \
48  -finline-limit=64 \
49  -Wno-psabi \
50  -Wno-unused-but-set-variable \
51  -Wno-unused-but-set-parameter \
52  -Wmaybe-uninitialized \
53  -Wno-maybe-uninitialized \
54  -Wno-error=maybe-uninitialized \
55  -fno-canonical-system-headers
56
57# Clang flags for all host rules
58CLANG_CONFIG_HOST_EXTRA_ASFLAGS :=
59CLANG_CONFIG_HOST_EXTRA_CFLAGS :=
60CLANG_CONFIG_HOST_EXTRA_CPPFLAGS :=
61CLANG_CONFIG_HOST_EXTRA_LDFLAGS :=
62
63# Clang flags for all target rules
64CLANG_CONFIG_TARGET_EXTRA_ASFLAGS :=
65CLANG_CONFIG_TARGET_EXTRA_CFLAGS := -nostdlibinc
66CLANG_CONFIG_TARGET_EXTRA_CPPFLAGS := -nostdlibinc
67CLANG_CONFIG_TARGET_EXTRA_LDFLAGS :=
68
69# HOST config
70clang_2nd_arch_prefix :=
71include $(BUILD_SYSTEM)/clang/HOST_$(HOST_ARCH).mk
72
73# HOST_2ND_ARCH config
74ifdef HOST_2ND_ARCH
75clang_2nd_arch_prefix := $(HOST_2ND_ARCH_VAR_PREFIX)
76include $(BUILD_SYSTEM)/clang/HOST_$(HOST_2ND_ARCH).mk
77endif
78
79# TARGET config
80clang_2nd_arch_prefix :=
81include $(BUILD_SYSTEM)/clang/TARGET_$(TARGET_ARCH).mk
82
83# TARGET_2ND_ARCH config
84ifdef TARGET_2ND_ARCH
85clang_2nd_arch_prefix := $(TARGET_2ND_ARCH_VAR_PREFIX)
86include $(BUILD_SYSTEM)/clang/TARGET_$(TARGET_2ND_ARCH).mk
87endif
88
89
90# Clang compiler-specific libc headers
91CLANG_CONFIG_EXTRA_HOST_C_INCLUDES := $(LLVM_PREBUILTS_HEADER_PATH)
92CLANG_CONFIG_EXTRA_TARGET_C_INCLUDES := $(LLVM_PREBUILTS_HEADER_PATH) $(TARGET_OUT_HEADERS)/clang
93
94# Address sanitizer clang config
95ADDRESS_SANITIZER_RUNTIME_LIBRARY := libclang_rt.asan_$(TARGET_ARCH)_android
96ADDRESS_SANITIZER_CONFIG_EXTRA_CFLAGS := -fsanitize=address -fno-omit-frame-pointer
97ADDRESS_SANITIZER_CONFIG_EXTRA_LDFLAGS := -Wl,-u,__asan_preinit
98ADDRESS_SANITIZER_CONFIG_EXTRA_SHARED_LIBRARIES := libdl $(ADDRESS_SANITIZER_RUNTIME_LIBRARY)
99ADDRESS_SANITIZER_CONFIG_EXTRA_STATIC_LIBRARIES := libasan
100
101# This allows us to use the superset of functionality that compiler-rt
102# provides to Clang (for supporting features like -ftrapv).
103COMPILER_RT_CONFIG_EXTRA_STATIC_LIBRARIES := libcompiler_rt-extras
104