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 $(LIBCXX_FORCE_REBUILD)) 11 ifndef LIBCXX_FORCE_REBUILD 12 ifeq (,$(strip $(wildcard $(LOCAL_PATH)/libs/$(TARGET_ARCH_ABI)/libc++_static$(TARGET_LIB_EXTENSION)))) 13 $(call __ndk_info,WARNING: Rebuilding libc++ libraries from sources!) 14 $(call __ndk_info,You might want to use $$NDK/build/tools/build-cxx-stl.sh --stl=libc++) 15 $(call __ndk_info,in order to build prebuilt versions to speed up your builds!) 16 LIBCXX_FORCE_REBUILD := true 17 endif 18 endif 19 20 libcxx_includes := $(LOCAL_PATH)/include 21 libcxx_export_includes := $(libcxx_includes) 22 libcxx_sources := \ 23 algorithm.cpp \ 24 any.cpp \ 25 bind.cpp \ 26 chrono.cpp \ 27 condition_variable.cpp \ 28 debug.cpp \ 29 exception.cpp \ 30 future.cpp \ 31 hash.cpp \ 32 ios.cpp \ 33 iostream.cpp \ 34 locale.cpp \ 35 memory.cpp \ 36 mutex.cpp \ 37 new.cpp \ 38 optional.cpp \ 39 random.cpp \ 40 regex.cpp \ 41 shared_mutex.cpp \ 42 stdexcept.cpp \ 43 string.cpp \ 44 strstream.cpp \ 45 system_error.cpp \ 46 thread.cpp \ 47 typeinfo.cpp \ 48 utility.cpp \ 49 valarray.cpp \ 50 support/android/locale_android.cpp 51 52 libcxx_sources := $(libcxx_sources:%=src/%) 53 54 # For now, this library can only be used to build C++11 binaries. 55 libcxx_export_cxxflags := -std=c++11 56 57 ifeq (,$(filter clang%,$(NDK_TOOLCHAIN_VERSION))) 58 # Add -fno-strict-aliasing because __list_imp::_end_ breaks TBAA rules by declaring 59 # simply as __list_node_base then casted to __list_node derived from that. See 60 # https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61571 for details 61 libcxx_export_cxxflags += -fno-strict-aliasing 62 endif 63 64 libcxx_cxxflags := $(libcxx_export_cxxflags) 65 libcxx_cflags := -D__STDC_FORMAT_MACROS -DLIBCXX_BUILDING_LIBCXXABI 66 67 libcxx_ldflags := 68 libcxx_export_ldflags := 69 # Need to make sure the unwinder is always linked with hidden visibility. 70 ifneq (,$(filter armeabi%,$(TARGET_ARCH_ABI))) 71 libcxx_ldflags += -Wl,--exclude-libs,libunwind.a 72 libcxx_export_ldflags += -Wl,--exclude-libs,libunwind.a 73 endif 74 75 ifneq ($(LIBCXX_FORCE_REBUILD),true) 76 77 $(call ndk_log,Using prebuilt libc++ libraries) 78 79 android_support_c_includes := $(LOCAL_PATH)/../../android/support/include 80 libcxxabi_c_includes := $(LOCAL_PATH)/../llvm-libc++abi/include 81 82 include $(CLEAR_VARS) 83 LOCAL_MODULE := c++_static 84 LOCAL_SRC_FILES := libs/$(TARGET_ARCH_ABI)/lib$(LOCAL_MODULE)$(TARGET_LIB_EXTENSION) 85 LOCAL_EXPORT_C_INCLUDES := $(libcxx_export_includes) $(android_support_c_includes) 86 LOCAL_EXPORT_CPPFLAGS := $(libcxx_export_cxxflags) 87 LOCAL_EXPORT_LDFLAGS := $(libcxx_export_ldflags) 88 include $(PREBUILT_STATIC_LIBRARY) 89 90 include $(CLEAR_VARS) 91 LOCAL_MODULE := c++_shared 92 LOCAL_SRC_FILES := libs/$(TARGET_ARCH_ABI)/lib$(LOCAL_MODULE)$(TARGET_SONAME_EXTENSION) 93 LOCAL_EXPORT_C_INCLUDES := \ 94 $(libcxx_export_includes) \ 95 $(libcxxabi_c_includes) \ 96 $(android_support_c_includes) 97 LOCAL_EXPORT_CPPFLAGS := $(libcxx_export_cxxflags) 98 LOCAL_EXPORT_LDFLAGS := $(libcxx_export_ldflags) 99 include $(PREBUILT_SHARED_LIBRARY) 100 101 $(call import-module, cxx-stl/llvm-libc++abi) 102 103 else 104 # LIBCXX_FORCE_REBUILD == true 105 106 $(call ndk_log,Rebuilding libc++ libraries from sources) 107 108 android_support_c_includes := $(LOCAL_PATH)/../../ndk/sources/android/support/include 109 110 include $(CLEAR_VARS) 111 LOCAL_MODULE := c++_static 112 LOCAL_SRC_FILES := $(libcxx_sources) 113 LOCAL_C_INCLUDES := $(libcxx_includes) $(android_support_c_includes) 114 LOCAL_CFLAGS := $(libcxx_cflags) 115 LOCAL_CPPFLAGS := $(libcxx_cxxflags) 116 LOCAL_CPP_FEATURES := rtti exceptions 117 LOCAL_EXPORT_C_INCLUDES := $(libcxx_export_includes) 118 LOCAL_EXPORT_CPPFLAGS := $(libcxx_export_cxxflags) 119 LOCAL_EXPORT_LDFLAGS := $(libcxx_export_ldflags) 120 LOCAL_STATIC_LIBRARIES := libc++abi android_support 121 include $(BUILD_STATIC_LIBRARY) 122 123 include $(CLEAR_VARS) 124 LOCAL_MODULE := c++_shared 125 LOCAL_WHOLE_STATIC_LIBRARIES := c++_static 126 LOCAL_EXPORT_C_INCLUDES := $(libcxx_export_includes) $(android_support_c_includes) 127 LOCAL_EXPORT_CPPFLAGS := $(libcxx_export_cxxflags) 128 LOCAL_EXPORT_LDFLAGS := $(libcxx_export_ldflags) 129 LOCAL_STATIC_LIBRARIES := libc++abi android_support 130 LOCAL_LDFLAGS := $(libcxx_ldflags) 131 # Use --as-needed to strip the DT_NEEDED on libstdc++.so (bionic's) that the 132 # driver always links for C++ but we don't use. 133 # See https://github.com/android-ndk/ndk/issues/105 134 LOCAL_LDFLAGS += -Wl,--as-needed 135 136 # We use the LLVM unwinder for all the 32-bit ARM targets. 137 ifneq (,$(filter armeabi%,$(TARGET_ARCH_ABI))) 138 LOCAL_STATIC_LIBRARIES += libunwind 139 endif 140 141 # But only need -latomic for armeabi. 142 ifeq ($(TARGET_ARCH_ABI),armeabi) 143 LOCAL_LDLIBS += -latomic 144 endif 145 include $(BUILD_SHARED_LIBRARY) 146 147 $(call import-add-path, $(LOCAL_PATH)/../..) 148 $(call import-module, external/libcxxabi) 149 150 endif # LIBCXX_FORCE_REBUILD == true 151 152 $(call import-module, android/support) 153
