config.mk revision 6374153fbf008f39ef5de03120de2b218d1d0701 
1## Clang configurations.
2
3# WITHOUT_CLANG covers both HOST and TARGET
4ifeq ($(WITHOUT_CLANG),true)
5WITHOUT_TARGET_CLANG := true
6WITHOUT_HOST_CLANG := true
7endif
8
9# We don't have 64-bit host prebuilts yet.
10ifeq (true,$(HOST_IS_64_BIT))
11FORCE_BUILD_LLVM_COMPONENTS := true
12endif
13
14LLVM_PREBUILTS_PATH := prebuilts/clang/$(BUILD_OS)-x86/host/3.5/bin
15LLVM_PREBUILTS_HEADER_PATH := prebuilts/clang/$(BUILD_OS)-x86/host/3.5/lib/clang/3.5/include/
16
17CLANG := $(LLVM_PREBUILTS_PATH)/clang$(BUILD_EXECUTABLE_SUFFIX)
18CLANG_CXX := $(LLVM_PREBUILTS_PATH)/clang++$(BUILD_EXECUTABLE_SUFFIX)
19LLVM_AS := $(LLVM_PREBUILTS_PATH)/llvm-as$(BUILD_EXECUTABLE_SUFFIX)
20LLVM_LINK := $(LLVM_PREBUILTS_PATH)/llvm-link$(BUILD_EXECUTABLE_SUFFIX)
21
22CLANG_TBLGEN := $(HOST_OUT_EXECUTABLES)/clang-tblgen$(BUILD_EXECUTABLE_SUFFIX)
23TBLGEN := $(HOST_OUT_EXECUTABLES)/tblgen$(BUILD_EXECUTABLE_SUFFIX)
24
25
26# Clang flags for all host or target rules
27CLANG_CONFIG_EXTRA_ASFLAGS :=
28CLANG_CONFIG_EXTRA_CFLAGS :=
29CLANG_CONFIG_EXTRA_CPPFLAGS :=
30CLANG_CONFIG_EXTRA_LDFLAGS :=
31
32CLANG_CONFIG_EXTRA_CFLAGS := \
33  -D__compiler_offsetof=__builtin_offsetof
34
35CLANG_CONFIG_UNKNOWN_CFLAGS := \
36  -funswitch-loops \
37  -Wno-psabi \
38  -Wno-unused-but-set-variable \
39  -Wno-unused-but-set-parameter \
40  -fno-canonical-system-headers
41
42# Clang flags for all host rules
43CLANG_CONFIG_HOST_EXTRA_ASFLAGS :=
44CLANG_CONFIG_HOST_EXTRA_CFLAGS :=
45CLANG_CONFIG_HOST_EXTRA_CPPFLAGS :=
46CLANG_CONFIG_HOST_EXTRA_LDFLAGS :=
47
48# Clang flags for all target rules
49CLANG_CONFIG_TARGET_EXTRA_ASFLAGS :=
50CLANG_CONFIG_TARGET_EXTRA_CFLAGS := -nostdlibinc
51CLANG_CONFIG_TARGET_EXTRA_CPPFLAGS := -nostdlibinc
52CLANG_CONFIG_TARGET_EXTRA_LDFLAGS :=
53
54# HOST config
55clang_2nd_arch_prefix :=
56include $(BUILD_SYSTEM)/clang/HOST_$(HOST_ARCH).mk
57
58# HOST_2ND_ARCH config
59ifdef HOST_2ND_ARCH
60clang_2nd_arch_prefix := $(HOST_2ND_ARCH_VAR_PREFIX)
61include $(BUILD_SYSTEM)/clang/HOST_$(HOST_2ND_ARCH).mk
62endif
63
64# TARGET config
65clang_2nd_arch_prefix :=
66include $(BUILD_SYSTEM)/clang/TARGET_$(TARGET_ARCH).mk
67
68# TARGET_2ND_ARCH config
69ifdef TARGET_2ND_ARCH
70clang_2nd_arch_prefix := $(TARGET_2ND_ARCH_VAR_PREFIX)
71include $(BUILD_SYSTEM)/clang/TARGET_$(TARGET_2ND_ARCH).mk
72endif
73
74
75# Clang compiler-specific libc headers
76CLANG_CONFIG_EXTRA_HOST_C_INCLUDES := $(LLVM_PREBUILTS_HEADER_PATH)
77CLANG_CONFIG_EXTRA_TARGET_C_INCLUDES := $(LLVM_PREBUILTS_HEADER_PATH) $(TARGET_OUT_HEADERS)/clang
78
79# Address sanitizer clang config
80ADDRESS_SANITIZER_CONFIG_EXTRA_CFLAGS := -fsanitize=address
81ADDRESS_SANITIZER_CONFIG_EXTRA_LDFLAGS := -Wl,-u,__asan_preinit
82ADDRESS_SANITIZER_CONFIG_EXTRA_SHARED_LIBRARIES := libdl libasan_preload
83ADDRESS_SANITIZER_CONFIG_EXTRA_STATIC_LIBRARIES := libasan
84
85# This allows us to use the superset of functionality that compiler-rt
86# provides to Clang (for supporting features like -ftrapv).
87COMPILER_RT_CONFIG_EXTRA_STATIC_LIBRARIES := libcompiler_rt-extras
88