config.mk revision 22b6c5c2c1b6e5d306517ce2e480710fcab352bf 
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
45# Workaround for ccache with clang.
46# See http://petereisentraut.blogspot.com/2011/05/ccache-and-clang.html.
47CLANG_CONFIG_EXTRA_CFLAGS += \
48  -Wno-unused-command-line-argument
49
50CLANG_CONFIG_UNKNOWN_CFLAGS := \
51  -finline-limit=64 \
52  -fno-canonical-system-headers \
53  -fno-tree-sra \
54  -funswitch-loops \
55  -Wmaybe-uninitialized \
56  -Wno-error=maybe-uninitialized \
57  -Wno-free-nonheap-object \
58  -Wno-literal-suffix \
59  -Wno-maybe-uninitialized \
60  -Wno-old-style-declaration \
61  -Wno-psabi \
62  -Wno-unused-but-set-variable \
63  -Wno-unused-but-set-parameter \
64  -Wno-unused-local-typedefs
65
66# Clang flags for all host rules
67CLANG_CONFIG_HOST_EXTRA_ASFLAGS :=
68CLANG_CONFIG_HOST_EXTRA_CFLAGS :=
69CLANG_CONFIG_HOST_EXTRA_CPPFLAGS :=
70CLANG_CONFIG_HOST_EXTRA_LDFLAGS :=
71
72# Clang flags for all target rules
73CLANG_CONFIG_TARGET_EXTRA_ASFLAGS :=
74CLANG_CONFIG_TARGET_EXTRA_CFLAGS := -nostdlibinc
75CLANG_CONFIG_TARGET_EXTRA_CPPFLAGS := -nostdlibinc
76CLANG_CONFIG_TARGET_EXTRA_LDFLAGS :=
77
78# HOST config
79clang_2nd_arch_prefix :=
80include $(BUILD_SYSTEM)/clang/HOST_$(HOST_ARCH).mk
81
82# HOST_2ND_ARCH config
83ifdef HOST_2ND_ARCH
84clang_2nd_arch_prefix := $(HOST_2ND_ARCH_VAR_PREFIX)
85include $(BUILD_SYSTEM)/clang/HOST_$(HOST_2ND_ARCH).mk
86endif
87
88# TARGET config
89clang_2nd_arch_prefix :=
90include $(BUILD_SYSTEM)/clang/TARGET_$(TARGET_ARCH).mk
91
92# TARGET_2ND_ARCH config
93ifdef TARGET_2ND_ARCH
94clang_2nd_arch_prefix := $(TARGET_2ND_ARCH_VAR_PREFIX)
95include $(BUILD_SYSTEM)/clang/TARGET_$(TARGET_2ND_ARCH).mk
96endif
97
98# Address sanitizer clang config
99ADDRESS_SANITIZER_CONFIG_EXTRA_CFLAGS := -fsanitize=address
100ADDRESS_SANITIZER_CONFIG_EXTRA_LDFLAGS := -Wl,-u,__asan_preinit
101
102ADDRESS_SANITIZER_CONFIG_EXTRA_LDFLAGS_HOST := -rdynamic
103ADDRESS_SANITIZER_CONFIG_EXTRA_LDLIBS_HOST := -lpthread -ldl
104ADDRESS_SANITIZER_CONFIG_EXTRA_SHARED_LIBRARIES_HOST :=
105ADDRESS_SANITIZER_CONFIG_EXTRA_STATIC_LIBRARIES_HOST := libasan
106
107ADDRESS_SANITIZER_CONFIG_EXTRA_LDFLAGS_TARGET :=
108ADDRESS_SANITIZER_CONFIG_EXTRA_LDLIBS_TARGET :=
109ADDRESS_SANITIZER_CONFIG_EXTRA_SHARED_LIBRARIES_TARGET := libdl libasan_preload
110ADDRESS_SANITIZER_CONFIG_EXTRA_STATIC_LIBRARIES_TARGET := libasan
111
112# This allows us to use the superset of functionality that compiler-rt
113# provides to Clang (for supporting features like -ftrapv).
114COMPILER_RT_CONFIG_EXTRA_STATIC_LIBRARIES := libcompiler_rt-extras
115