1 # This file is dual licensed under the MIT and the University of Illinois Open 2 # Source Licenses. See LICENSE.TXT for details. 3 4 LOCAL_PATH := $(call my-dir) 5 6 # Normally, we distribute the NDK with prebuilt binaries of libc++ 7 # in $LOCAL_PATH/libs/<abi>/. However, 8 # 9 10 LIBCXX_FORCE_REBUILD := $(strip $(LIBCXX_FORCE_REBUILD)) 11 12 __libcxx_force_rebuild := $(LIBCXX_FORCE_REBUILD) 13 14 ifndef LIBCXX_FORCE_REBUILD 15 ifeq (,$(strip $(wildcard $(LOCAL_PATH)/libs/$(TARGET_ARCH_ABI)/libc++_static$(TARGET_LIB_EXTENSION)))) 16 $(call __ndk_info,WARNING: Rebuilding libc++ libraries from sources!) 17 $(call __ndk_info,You might want to use $$NDK/build/tools/build-cxx-stl.sh --stl=libc++) 18 $(call __ndk_info,in order to build prebuilt versions to speed up your builds!) 19 __libcxx_force_rebuild := true 20 endif 21 endif 22 23 # Use gabi++ for x86* and mips* until libc++/libc++abi is ready for them 24 ifneq (,$(filter x86% mips%,$(TARGET_ARCH_ABI))) 25 __prebuilt_libcxx_compiled_with_gabixx := true 26 else 27 __prebuilt_libcxx_compiled_with_gabixx := false 28 endif 29 30 __libcxx_use_gabixx := $(__prebuilt_libcxx_compiled_with_gabixx) 31 32 LIBCXX_USE_GABIXX := $(strip $(LIBCXX_USE_GABIXX)) 33 ifeq ($(LIBCXX_USE_GABIXX),true) 34 __libcxx_use_gabixx := true 35 endif 36 37 ifneq ($(__libcxx_use_gabixx),$(__prebuilt_libcxx_compiled_with_gabixx)) 38 ifneq ($(__libcxx_force_rebuild),true) 39 ifeq ($(__prebuilt_libcxx_compiled_with_gabixx),true) 40 $(call __ndk_info,WARNING: Rebuilding libc++ libraries from sources since libc++ prebuilt libraries for $(TARGET_ARCH_ABI)) 41 $(call __ndk_info,are compiled with gabi++ but LIBCXX_USE_GABIXX is not set to true) 42 else 43 $(call __ndk_info,WARNING: Rebuilding libc++ libraries from sources since libc++ prebuilt libraries for $(TARGET_ARCH_ABI)) 44 $(call __ndk_info,are not compiled with gabi++ and LIBCXX_USE_GABIXX is set to true) 45 endif 46 __libcxx_force_rebuild := true 47 endif 48 endif 49 50 llvm_libc++_includes := $(LOCAL_PATH)/libcxx/include 51 llvm_libc++_export_includes := $(llvm_libc++_includes) 52 llvm_libc++_sources := \ 53 algorithm.cpp \ 54 bind.cpp \ 55 chrono.cpp \ 56 condition_variable.cpp \ 57 debug.cpp \ 58 exception.cpp \ 59 future.cpp \ 60 hash.cpp \ 61 ios.cpp \ 62 iostream.cpp \ 63 locale.cpp \ 64 memory.cpp \ 65 mutex.cpp \ 66 new.cpp \ 67 optional.cpp \ 68 random.cpp \ 69 regex.cpp \ 70 shared_mutex.cpp \ 71 stdexcept.cpp \ 72 string.cpp \ 73 strstream.cpp \ 74 system_error.cpp \ 75 thread.cpp \ 76 typeinfo.cpp \ 77 utility.cpp \ 78 valarray.cpp \ 79 support/android/locale_android.cpp 80 81 llvm_libc++_sources := $(llvm_libc++_sources:%=libcxx/src/%) 82 83 # For now, this library can only be used to build C++11 binaries. 84 llvm_libc++_export_cxxflags := -std=c++11 85 86 ifeq (,$(filter clang%,$(NDK_TOOLCHAIN_VERSION))) 87 # Add -fno-strict-aliasing because __list_imp::_end_ breaks TBAA rules by declaring 88 # simply as __list_node_base then casted to __list_node derived from that. See 89 # https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61571 for details 90 llvm_libc++_export_cxxflags += -fno-strict-aliasing 91 endif 92 93 llvm_libc++_cxxflags := $(llvm_libc++_export_cxxflags) 94 llvm_libc++_cflags := 95 96 ifeq ($(__libcxx_use_gabixx),true) 97 98 # Gabi++ emulates libcxxabi when building libcxx. 99 llvm_libc++_cxxflags += -DLIBCXXABI=1 100 101 # Find the GAbi++ sources to include them here. 102 # The voodoo below is to allow building libc++ out of the NDK source 103 # tree. This can make it easier to experiment / update / debug it. 104 # 105 libgabi++_sources_dir := $(strip $(wildcard $(LOCAL_PATH)/../gabi++)) 106 ifdef libgabi++_sources_dir 107 libgabi++_sources_prefix := ../gabi++ 108 else 109 libgabi++_sources_dir := $(strip $(wildcard $(NDK_ROOT)/sources/cxx-stl/gabi++)) 110 ifndef libgabi++_sources_dir 111 $(error Can't find GAbi++ sources directory!!) 112 endif 113 libgabi++_sources_prefix := $(libgabi++_sources_dir) 114 endif 115 116 include $(libgabi++_sources_dir)/sources.mk 117 llvm_libc++_sources += $(addprefix $(libgabi++_sources_prefix:%/=%)/,$(libgabi++_src_files)) 118 llvm_libc++_includes += $(libgabi++_c_includes) 119 llvm_libc++_export_includes += $(libgabi++_c_includes) 120 121 else 122 # libc++abi 123 124 libcxxabi_sources_dir := $(strip $(wildcard $(LOCAL_PATH)/../llvm-libc++abi)) 125 ifdef libcxxabi_sources_dir 126 libcxxabi_sources_prefix := ../llvm-libc++abi 127 else 128 libcxxabi_sources_dir := $(strip $(wildcard $(NDK_ROOT)/sources/cxx-stl/llvm-libc++abi)) 129 ifndef libcxxabi_sources_dir 130 $(error Can't find libcxxabi sources directory!!) 131 endif 132 libcxxabi_sources_prefix := $(libcxxabi_sources_dir) 133 endif 134 135 include $(libcxxabi_sources_dir)/sources.mk 136 llvm_libc++_sources += $(addprefix $(libcxxabi_sources_prefix:%/=%)/,$(libcxxabi_src_files)) 137 llvm_libc++_includes += $(libcxxabi_c_includes) 138 llvm_libc++_export_includes += $(libcxxabi_c_includes) 139 140 ifeq (clang3.5,$(NDK_TOOLCHAIN_VERSION)) 141 # Workaround an issue of integrated-as (default in clang3.5) where it fails to compile 142 # llvm-libc++abi/libcxxabi/src/Unwind/UnwindRegistersRestore.S 143 llvm_libc++_cflags += -no-integrated-as 144 endif 145 146 endif 147 148 ifneq ($(__libcxx_force_rebuild),true) 149 150 $(call ndk_log,Using prebuilt libc++ libraries) 151 152 android_support_c_includes := $(LOCAL_PATH)/../../android/support/include 153 154 include $(CLEAR_VARS) 155 LOCAL_MODULE := c++_static 156 LOCAL_SRC_FILES := libs/$(TARGET_ARCH_ABI)/lib$(LOCAL_MODULE)$(TARGET_LIB_EXTENSION) 157 # For armeabi*, choose thumb mode unless LOCAL_ARM_MODE := arm 158 ifneq (,$(filter armeabi%,$(TARGET_ARCH_ABI))) 159 ifneq (arm,$(LOCAL_ARM_MODE)) 160 ifneq (arm,$(TARGET_ARM_MODE)) 161 LOCAL_SRC_FILES := libs/$(TARGET_ARCH_ABI)/thumb/lib$(LOCAL_MODULE)$(TARGET_LIB_EXTENSION) 162 endif 163 endif 164 endif 165 LOCAL_EXPORT_C_INCLUDES := $(llvm_libc++_export_includes) $(android_support_c_includes) 166 LOCAL_EXPORT_CPPFLAGS := $(llvm_libc++_export_cxxflags) 167 include $(PREBUILT_STATIC_LIBRARY) 168 169 include $(CLEAR_VARS) 170 LOCAL_MODULE := c++_shared 171 LOCAL_SRC_FILES := libs/$(TARGET_ARCH_ABI)/lib$(LOCAL_MODULE)$(TARGET_SONAME_EXTENSION) 172 # For armeabi*, choose thumb mode unless LOCAL_ARM_MODE := arm 173 ifneq (,$(filter armeabi%,$(TARGET_ARCH_ABI))) 174 ifneq (arm,$(LOCAL_ARM_MODE)) 175 ifneq (arm,$(TARGET_ARM_MODE)) 176 LOCAL_SRC_FILES := libs/$(TARGET_ARCH_ABI)/thumb/lib$(LOCAL_MODULE)$(TARGET_SONAME_EXTENSION) 177 endif 178 endif 179 endif 180 LOCAL_EXPORT_C_INCLUDES := $(llvm_libc++_export_includes) $(android_support_c_includes) 181 LOCAL_EXPORT_CPPFLAGS := $(llvm_libc++_export_cxxflags) 182 include $(PREBUILT_SHARED_LIBRARY) 183 184 else 185 # __libcxx_force_rebuild == true 186 187 $(call ndk_log,Rebuilding libc++ libraries from sources) 188 189 include $(CLEAR_VARS) 190 LOCAL_MODULE := c++_static 191 LOCAL_SRC_FILES := $(llvm_libc++_sources) 192 LOCAL_C_INCLUDES := $(android_support_c_includes) $(llvm_libc++_includes) 193 LOCAL_CFLAGS := $(llvm_libc++_cflags) 194 LOCAL_CPPFLAGS := $(llvm_libc++_cxxflags) 195 LOCAL_CPP_FEATURES := rtti exceptions 196 LOCAL_EXPORT_C_INCLUDES := $(llvm_libc++_export_includes) 197 LOCAL_EXPORT_CPPFLAGS := $(llvm_libc++_export_cxxflags) 198 LOCAL_STATIC_LIBRARIES := android_support 199 include $(BUILD_STATIC_LIBRARY) 200 201 include $(CLEAR_VARS) 202 LOCAL_MODULE := c++_shared 203 LOCAL_SRC_FILES := $(llvm_libc++_sources) 204 LOCAL_C_INCLUDES := $(android_support_c_includes) $(llvm_libc++_includes) 205 LOCAL_CFLAGS := $(llvm_libc++_cflags) 206 LOCAL_CPPFLAGS := $(llvm_libc++_cxxflags) 207 LOCAL_CPP_FEATURES := rtti exceptions 208 LOCAL_EXPORT_C_INCLUDES := $(llvm_libc++_export_includes) 209 LOCAL_EXPORT_CPPFLAGS := $(llvm_libc++_export_cxxflags) 210 LOCAL_STATIC_LIBRARIES := android_support 211 # For armeabi's shared version of libc++ compiled by clang, we need compiler-rt or libatomic 212 # for __atomic_fetch_add_4. Note that "clang -gcc-toolchain" uses gcc4.8's as/ld/libs, including 213 # libatomic (which is not available in gcc4.6) 214 # 215 # On the other hand, all prebuilt libc++ libaries at sources/cxx-stl/llvm-libc++/libs are 216 # compiled with "clang -gcc-toolchain *4.8*" with -latomic, such that uses of prebuilt 217 # libc++_shared.so don't automatically requires -latomic or compiler-rt, unless code does 218 # "#include <atomic>" where __atomic_is_lock_free is needed for armeabi and mips 219 # 220 ifeq ($(TARGET_ARCH_ABI),armeabi) 221 ifneq (,$(filter clang%,$(NDK_TOOLCHAIN_VERSION))) 222 LOCAL_SHARED_LIBRARIES := compiler_rt_shared 223 endif 224 endif 225 226 include $(BUILD_SHARED_LIBRARY) 227 228 endif # __libcxx_force_rebuild == true 229 230 $(call import-module, android/support) 231 $(call import-module, android/compiler-rt) 232
