config.mk revision 8affa161fee9bb6d62197013c9f79b902d1568d2 
1## Clang configurations.
2
3# WITHOUT_CLANG covers both HOST and TARGET
4ifeq ($(WITHOUT_CLANG),true)
5WITHOUT_TARGET_CLANG := true
6WITHOUT_HOST_CLANG := true
7endif
8
9LLVM_PREBUILTS_VERSION := 3.5
10LLVM_PREBUILTS_PATH := prebuilts/clang/$(BUILD_OS)-x86/host/$(LLVM_PREBUILTS_VERSION)/bin
11LLVM_PREBUILTS_HEADER_PATH := prebuilts/clang/$(BUILD_OS)-x86/host/$(LLVM_PREBUILTS_VERSION)/lib/clang/$(LLVM_PREBUILTS_VERSION)/include/
12
13CLANG := $(LLVM_PREBUILTS_PATH)/clang$(BUILD_EXECUTABLE_SUFFIX)
14CLANG_CXX := $(LLVM_PREBUILTS_PATH)/clang++$(BUILD_EXECUTABLE_SUFFIX)
15LLVM_AS := $(LLVM_PREBUILTS_PATH)/llvm-as$(BUILD_EXECUTABLE_SUFFIX)
16LLVM_LINK := $(LLVM_PREBUILTS_PATH)/llvm-link$(BUILD_EXECUTABLE_SUFFIX)
17
18CLANG_TBLGEN := $(HOST_OUT_EXECUTABLES)/clang-tblgen$(BUILD_EXECUTABLE_SUFFIX)
19LLVM_TBLGEN := $(HOST_OUT_EXECUTABLES)/llvm-tblgen$(BUILD_EXECUTABLE_SUFFIX)
20
21# The C/C++ compiler can be wrapped by setting the CC/CXX_WRAPPER vars.
22ifdef CC_WRAPPER
23  ifneq ($(CC_WRAPPER),$(firstword $(CLANG)))
24    CLANG := $(CC_WRAPPER) $(CLANG)
25  endif
26endif
27ifdef CXX_WRAPPER
28  ifneq ($(CXX_WRAPPER),$(firstword $(CLANG_CXX)))
29    CLANG_CXX := $(CXX_WRAPPER) $(CLANG_CXX)
30  endif
31endif
32
33# Clang flags for all host or target rules
34CLANG_CONFIG_EXTRA_ASFLAGS :=
35CLANG_CONFIG_EXTRA_CFLAGS :=
36CLANG_CONFIG_EXTRA_CPPFLAGS :=
37CLANG_CONFIG_EXTRA_LDFLAGS :=
38
39CLANG_CONFIG_EXTRA_CFLAGS += \
40  -D__compiler_offsetof=__builtin_offsetof
41
42# Help catch common 32/64-bit errors.
43CLANG_CONFIG_EXTRA_CFLAGS += \
44  -Werror=int-conversion
45
46CLANG_CONFIG_UNKNOWN_CFLAGS := \
47  -finline-limit=64 \
48  -fno-canonical-system-headers \
49  -fno-tree-sra \
50  -funswitch-loops \
51  -Wmaybe-uninitialized \
52  -Wno-error=maybe-uninitialized \
53  -Wno-literal-suffix \
54  -Wno-maybe-uninitialized \
55  -Wno-old-style-declaration \
56  -Wno-psabi \
57  -Wno-unused-but-set-variable \
58  -Wno-unused-but-set-parameter \
59  -Wno-unused-local-typedefs
60
61# Clang flags for all host rules
62CLANG_CONFIG_HOST_EXTRA_ASFLAGS :=
63CLANG_CONFIG_HOST_EXTRA_CFLAGS :=
64CLANG_CONFIG_HOST_EXTRA_CPPFLAGS :=
65CLANG_CONFIG_HOST_EXTRA_LDFLAGS :=
66
67# Clang flags for all target rules
68CLANG_CONFIG_TARGET_EXTRA_ASFLAGS :=
69CLANG_CONFIG_TARGET_EXTRA_CFLAGS := -nostdlibinc
70CLANG_CONFIG_TARGET_EXTRA_CPPFLAGS := -nostdlibinc
71CLANG_CONFIG_TARGET_EXTRA_LDFLAGS :=
72
73# HOST config
74clang_2nd_arch_prefix :=
75include $(BUILD_SYSTEM)/clang/HOST_$(HOST_ARCH).mk
76
77# HOST_2ND_ARCH config
78ifdef HOST_2ND_ARCH
79clang_2nd_arch_prefix := $(HOST_2ND_ARCH_VAR_PREFIX)
80include $(BUILD_SYSTEM)/clang/HOST_$(HOST_2ND_ARCH).mk
81endif
82
83# TARGET config
84clang_2nd_arch_prefix :=
85include $(BUILD_SYSTEM)/clang/TARGET_$(TARGET_ARCH).mk
86
87# TARGET_2ND_ARCH config
88ifdef TARGET_2ND_ARCH
89clang_2nd_arch_prefix := $(TARGET_2ND_ARCH_VAR_PREFIX)
90include $(BUILD_SYSTEM)/clang/TARGET_$(TARGET_2ND_ARCH).mk
91endif
92
93
94# Clang compiler-specific libc headers
95CLANG_CONFIG_EXTRA_HOST_C_INCLUDES := $(LLVM_PREBUILTS_HEADER_PATH)
96CLANG_CONFIG_EXTRA_TARGET_C_INCLUDES := $(LLVM_PREBUILTS_HEADER_PATH) $(TARGET_OUT_HEADERS)/clang
97
98# Address sanitizer clang config
99ADDRESS_SANITIZER_CONFIG_EXTRA_CFLAGS := -fsanitize=address
100ADDRESS_SANITIZER_CONFIG_EXTRA_LDFLAGS := -Wl,-u,__asan_preinit
101ADDRESS_SANITIZER_CONFIG_EXTRA_SHARED_LIBRARIES := libdl libasan_preload
102ADDRESS_SANITIZER_CONFIG_EXTRA_STATIC_LIBRARIES := libasan
103
104# This allows us to use the superset of functionality that compiler-rt
105# provides to Clang (for supporting features like -ftrapv).
106COMPILER_RT_CONFIG_EXTRA_STATIC_LIBRARIES := libcompiler_rt-extras
107