config.mk revision 1568029218b3da82a3bbd3fd6dce4385db5daf5b 
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 := $(BUILD_OUT_EXECUTABLES)/clang-tblgen$(BUILD_EXECUTABLE_SUFFIX)
18LLVM_TBLGEN := $(BUILD_OUT_EXECUTABLES)/llvm-tblgen$(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_CONLYFLAGS :=
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
46# Workaround for ccache with clang.
47# See http://petereisentraut.blogspot.com/2011/05/ccache-and-clang.html.
48CLANG_CONFIG_EXTRA_CFLAGS += \
49  -Wno-unused-command-line-argument
50
51CLANG_CONFIG_UNKNOWN_CFLAGS := \
52  -finline-limit=64 \
53  -fno-canonical-system-headers \
54  -fno-tree-sra \
55  -funswitch-loops \
56  -Wmaybe-uninitialized \
57  -Wno-error=maybe-uninitialized \
58  -Wno-free-nonheap-object \
59  -Wno-literal-suffix \
60  -Wno-maybe-uninitialized \
61  -Wno-old-style-declaration \
62  -Wno-psabi \
63  -Wno-unused-but-set-variable \
64  -Wno-unused-but-set-parameter \
65  -Wno-unused-local-typedefs
66
67# Clang flags for all host rules
68CLANG_CONFIG_HOST_EXTRA_ASFLAGS :=
69CLANG_CONFIG_HOST_EXTRA_CFLAGS :=
70CLANG_CONFIG_HOST_EXTRA_CPPFLAGS :=
71CLANG_CONFIG_HOST_EXTRA_LDFLAGS :=
72
73# Clang flags for all target rules
74CLANG_CONFIG_TARGET_EXTRA_ASFLAGS :=
75CLANG_CONFIG_TARGET_EXTRA_CFLAGS := -nostdlibinc
76CLANG_CONFIG_TARGET_EXTRA_CPPFLAGS := -nostdlibinc
77CLANG_CONFIG_TARGET_EXTRA_LDFLAGS :=
78
79# HOST config
80clang_2nd_arch_prefix :=
81include $(BUILD_SYSTEM)/clang/HOST_$(HOST_ARCH).mk
82
83# HOST_2ND_ARCH config
84ifdef HOST_2ND_ARCH
85clang_2nd_arch_prefix := $(HOST_2ND_ARCH_VAR_PREFIX)
86include $(BUILD_SYSTEM)/clang/HOST_$(HOST_2ND_ARCH).mk
87endif
88
89# TARGET config
90clang_2nd_arch_prefix :=
91include $(BUILD_SYSTEM)/clang/TARGET_$(TARGET_ARCH).mk
92
93# TARGET_2ND_ARCH config
94ifdef TARGET_2ND_ARCH
95clang_2nd_arch_prefix := $(TARGET_2ND_ARCH_VAR_PREFIX)
96include $(BUILD_SYSTEM)/clang/TARGET_$(TARGET_2ND_ARCH).mk
97endif
98
99# Address sanitizer clang config
100ADDRESS_SANITIZER_RUNTIME_LIBRARY := libclang_rt.asan_$(TARGET_ARCH)_android
101ADDRESS_SANITIZER_CONFIG_EXTRA_CFLAGS := -fsanitize=address -fno-omit-frame-pointer
102ADDRESS_SANITIZER_CONFIG_EXTRA_LDFLAGS := -Wl,-u,__asan_preinit
103
104ADDRESS_SANITIZER_CONFIG_EXTRA_LDFLAGS_HOST := -rdynamic
105ADDRESS_SANITIZER_CONFIG_EXTRA_LDLIBS_HOST := -lpthread -ldl
106ADDRESS_SANITIZER_CONFIG_EXTRA_SHARED_LIBRARIES_HOST :=
107ADDRESS_SANITIZER_CONFIG_EXTRA_STATIC_LIBRARIES_HOST := libasan
108
109ADDRESS_SANITIZER_CONFIG_EXTRA_LDFLAGS_TARGET :=
110ADDRESS_SANITIZER_CONFIG_EXTRA_LDLIBS_TARGET :=
111ADDRESS_SANITIZER_CONFIG_EXTRA_SHARED_LIBRARIES_TARGET := libdl $(ADDRESS_SANITIZER_RUNTIME_LIBRARY)
112ADDRESS_SANITIZER_CONFIG_EXTRA_STATIC_LIBRARIES_TARGET := libasan
113
114# This allows us to use the superset of functionality that compiler-rt
115# provides to Clang (for supporting features like -ftrapv).
116COMPILER_RT_CONFIG_EXTRA_STATIC_LIBRARIES := libcompiler_rt-extras
117
118ifeq ($(HOST_PREFER_32_BIT),true)
119# We don't have 32-bit prebuilt libLLVM/libclang, so force to build them from source.
120FORCE_BUILD_LLVM_COMPONENTS := true
121endif
122