config.mk revision 4ffe3f5b9ffea2725dbc981230127840aee5be81 
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
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  -finline-limit=64 \
47  -fno-canonical-system-headers \
48  -fno-tree-sra \
49  -funswitch-loops \
50  -Wmaybe-uninitialized \
51  -Wno-error=maybe-uninitialized \
52  -Wno-literal-suffix \
53  -Wno-maybe-uninitialized \
54  -Wno-old-style-declaration \
55  -Wno-psabi \
56  -Wno-unused-but-set-variable \
57  -Wno-unused-but-set-parameter \
58  -Wno-unused-local-typedefs
59
60# Clang flags for all host rules
61CLANG_CONFIG_HOST_EXTRA_ASFLAGS :=
62CLANG_CONFIG_HOST_EXTRA_CFLAGS :=
63CLANG_CONFIG_HOST_EXTRA_CPPFLAGS :=
64CLANG_CONFIG_HOST_EXTRA_LDFLAGS :=
65
66# Clang flags for all target rules
67CLANG_CONFIG_TARGET_EXTRA_ASFLAGS :=
68CLANG_CONFIG_TARGET_EXTRA_CFLAGS := -nostdlibinc
69CLANG_CONFIG_TARGET_EXTRA_CPPFLAGS := -nostdlibinc
70CLANG_CONFIG_TARGET_EXTRA_LDFLAGS :=
71
72# HOST config
73clang_2nd_arch_prefix :=
74include $(BUILD_SYSTEM)/clang/HOST_$(HOST_ARCH).mk
75
76# HOST_2ND_ARCH config
77ifdef HOST_2ND_ARCH
78clang_2nd_arch_prefix := $(HOST_2ND_ARCH_VAR_PREFIX)
79include $(BUILD_SYSTEM)/clang/HOST_$(HOST_2ND_ARCH).mk
80endif
81
82# TARGET config
83clang_2nd_arch_prefix :=
84include $(BUILD_SYSTEM)/clang/TARGET_$(TARGET_ARCH).mk
85
86# TARGET_2ND_ARCH config
87ifdef TARGET_2ND_ARCH
88clang_2nd_arch_prefix := $(TARGET_2ND_ARCH_VAR_PREFIX)
89include $(BUILD_SYSTEM)/clang/TARGET_$(TARGET_2ND_ARCH).mk
90endif
91
92# Address sanitizer clang config
93ADDRESS_SANITIZER_CONFIG_EXTRA_CFLAGS := -fsanitize=address
94ADDRESS_SANITIZER_CONFIG_EXTRA_LDFLAGS := -Wl,-u,__asan_preinit
95
96ADDRESS_SANITIZER_CONFIG_EXTRA_LDFLAGS_HOST := -rdynamic
97ADDRESS_SANITIZER_CONFIG_EXTRA_LDLIBS_HOST := -lpthread -ldl
98ADDRESS_SANITIZER_CONFIG_EXTRA_SHARED_LIBRARIES_HOST :=
99ADDRESS_SANITIZER_CONFIG_EXTRA_STATIC_LIBRARIES_HOST := libasan
100
101ADDRESS_SANITIZER_CONFIG_EXTRA_LDFLAGS_TARGET :=
102ADDRESS_SANITIZER_CONFIG_EXTRA_LDLIBS_TARGET :=
103ADDRESS_SANITIZER_CONFIG_EXTRA_SHARED_LIBRARIES_TARGET := libdl libasan_preload
104ADDRESS_SANITIZER_CONFIG_EXTRA_STATIC_LIBRARIES_TARGET := libasan
105
106# This allows us to use the superset of functionality that compiler-rt
107# provides to Clang (for supporting features like -ftrapv).
108COMPILER_RT_CONFIG_EXTRA_STATIC_LIBRARIES := libcompiler_rt-extras
109