{"id":4516,"date":"2023-04-14T00:42:55","date_gmt":"2023-04-13T16:42:55","guid":{"rendered":"https:\/\/blog.coderfan.org\/?p=4516"},"modified":"2023-07-13T17:34:17","modified_gmt":"2023-07-13T09:34:17","slug":"stl-support-in-android","status":"publish","type":"post","link":"https:\/\/blog.coderfan.org\/en\/stl-support-in-android.html","title":{"rendered":"Android\u7cfb\u7edf\u5bf9C\/C++ STL\u7684\u652f\u6301"},"content":{"rendered":"
\n
\n \t<\/i> Read Time:<\/span>7 Minute, 56 Second <\/div>\n\n <\/div>\n

\u80cc\u666f<\/h4>\n\n\n\n

\u6700\u8fd1\u5728\u79fb\u690d\u67d0\u4e2a\u7b2c\u4e09\u65b9\u5f00\u6e90\u5e93\u5230Android\u7cfb\u7edf\u4e2d\uff0c\u5728\u6211\u4eec\u7684\u4ee3\u7801\u5185\u8c03\u7528\u4e86\u5176\u63a5\u53e3\uff0c\u8be5\u63a5\u53e3\u5b9a\u4e49\u5982\u4e0b\uff1a<\/p>\n\n\n\n

namespace apollo {\nnamespace cyber {\nstd::unique_ptr<Node> CreateNode(const std::string& node_name,\n                                 const std::string& name_space = \"\");\nvoid CyberTest();\n\n}  \/\/ namespace cyber\n}  \/\/ namespace apollo<\/code><\/pre>\n\n\n\n
\u4e8b\u5148\u6211\u5df2\u7ecf\u5c06\u8be5\u7b2c\u4e09\u65b9\u5f00\u6e90\u5e93\u901a\u8fc7NDK\u7f16\u8bd1\u4e3a\u5bf9\u5e94\u7684\u5171\u4eab\u5e93\uff0c\u5e76\u5728Android.bp\u4ee5\u9884\u7f16\u8bd1\u5e93\u7684\u5f62\u5f0f\u8fdb\u884c\u4e86\u5bfc\u5165\uff0c\u4e4b\u540e\u5728AOSP\u6e90\u7801\u73af\u5883\u4e0b\u8fdb\u884c\u7f16\u8bd1\u3002\u4f46\u662f\u6700\u7ec8\u5728\u94fe\u63a5\u9636\u6bb5\uff0c\u5374\u63d0\u793a\u6211\u8be5\u63a5\u53e3\u5c5e\u4e8eundefined symbol,\u5176\u8981\u6c42\u7684symbol\u5982\u4e0b\uff1a<\/p>\n\n\n\n
apollo::cyber::CreateNode(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&, std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&)<\/code><\/pre>\n\n\n\n
\u4e8e\u662f\u6211\u4f7f\u7528nm\u547d\u4ee4\u67e5\u770b\u8be5\u5171\u4eab\u5e93\u4e2d\u8be5\u63a5\u53e3\u7684symbol\uff1a<\/p>\n\n\n\n
nm -D libcyber.so | grep CreateNode | xargs c++filt<\/code><\/pre>\n\n\n\n
\u5f97\u5230\u7684symbol\u5982\u4e0b\uff1a<\/p>\n\n\n\n
apollo::cyber::CreateNode(std::__ndk1::basic_string<char, std::__ndk1::char_traits<char>, std::__ndk1::allocator<char> > const&, std::__ndk1::basic_string<char, std::__ndk1::char_traits<char>, std::__ndk1::allocator<char> > const&)<\/code><\/pre>\n\n\n\n
\u7ecf\u8fc7\u5bf9\u6bd4\u53d1\u73b0\u94fe\u63a5\u65f6\u6240\u9700\u8981\u7684symbol\u4e0e\u5f53\u524d\u8be5\u5171\u4eab\u5e93\u6240\u63d0\u4f9b\u7684symbol\u786e\u5b9e\u65e0\u6cd5\u5bf9\u5e94\u3002\u51fa\u73b0\u5dee\u5f02\u7684\u5730\u65b9\u5c5e\u4e8eC++\u6807\u51c6\u5e93\u7684\u5185\u5bb9\u3002\u5f88\u660e\u663e\uff0c\u95ee\u9898\u5c31\u51fa\u5728\u8fd9\u91cc\uff1a\u8be5\u5171\u4eab\u5e93\u7f16\u8bd1\u65f6\u6240\u4f7f\u7528\u7684C++ STL\u5e93\u4e0e\u540e\u7eedAOSP\u6e90\u7801\u7f16\u8bd1\u65f6\u7684C++ STL\u5e93\u4e0d\u76f8\u5339\u914d\u3002<\/p>\n\n\n\n
Android STL<\/h4>\n\n\n\n
\u9996\u5148\u6211\u4eec\u9700\u8981\u6e05\u695a\uff0cAndroid\u6e90\u7801\u4e2d\u662f\u5b58\u5728\u591a\u79cdSTL\u5e93\u7684\uff0c\u4ee5Android12\u4e3a\u4f8b\uff0c\u4e3b\u8981\u5305\u542b\u4e09\u79cdSTL\u5e93<\/strong>\uff1a<\/p>\n\n\n\n
Android Runtime STL:<\/strong>\u8fd9\u662fAndroid\u8fd0\u884c\u65f6\u7cfb\u7edf\u5e93\u6240\u4f9d\u8d56\u7684STL\u5e93\uff0c\u5305\u542b\u5171\u4eab\u5e93libc++.so,\u9759\u6001\u5e93libc++_static.a<\/em><\/strong>\uff0c\u5176\u6e90\u7801\u4f4d\u4e8eexternal\/libcxx\u5185\uff0c<\/em>\u6211\u4eec\u53ef\u4ee5\u627e\u5230\u4e24\u8005\u5728Android.bp\u4e2d\u7684\u5b9a\u4e49\uff1a<\/p>\n\n\n\n
\n\n\/\/ host + device static lib\ncc_library_static {\n    name: \"libc++_static\",\n    defaults: [\"libc++ defaults\"],\n    vendor_available: true,\n    product_available: true,\n    ramdisk_available: true,\n    vendor_ramdisk_available: true,\n    recovery_available: true,\n    apex_available: [\n        \"\/\/apex_available:platform\",\n        \"\/\/apex_available:anyapex\",\n    ],\n    \/\/ being part of updatable apexes, this should work on older releases\n    min_sdk_version: \"apex_inherit\",\n    native_bridge_supported: true,\n    srcs: [\n        \"src\/algorithm.cpp\",\n        \"src\/any.cpp\",\n        \"src\/bind.cpp\",\n        \"src\/charconv.cpp\",\n        \"src\/chrono.cpp\",\n        \"src\/condition_variable.cpp\",\n        \"src\/debug.cpp\",\n        \"src\/exception.cpp\",\n        \"src\/future.cpp\",\n        \"src\/hash.cpp\",\n        \"src\/ios.cpp\",\n        \"src\/iostream.cpp\",\n        \"src\/locale.cpp\",\n        \"src\/memory.cpp\",\n        \"src\/mutex.cpp\",\n        \"src\/new.cpp\",\n        \"src\/optional.cpp\",\n        \"src\/random.cpp\",\n        \"src\/regex.cpp\",\n        \"src\/shared_mutex.cpp\",\n        \"src\/stdexcept.cpp\",\n        \"src\/string.cpp\",\n        \"src\/strstream.cpp\",\n        \"src\/system_error.cpp\",\n        \"src\/thread.cpp\",\n        \"src\/typeinfo.cpp\",\n        \"src\/utility.cpp\",\n        \"src\/valarray.cpp\",\n        \"src\/variant.cpp\",\n        \"src\/vector.cpp\",\n    ],\n    whole_static_libs: [\n        \"libc++abi\",\n    ],\n    target: {\n        windows: {\n            srcs: [                                                                                                                                                                                         \n                \"src\/support\/win32\/*.cpp\",\n            ]\n        },\n    },\n}\n\/\/ host + device dynamic lib \ncc_library_shared {\n    name: \"libc++\",\n    host_supported: true,\n    vendor_available: true,\n    product_available: true,\n    native_bridge_supported: true,\n    vndk: {\n        enabled: true,\n        support_system_process: true,\n    },  \n    ramdisk_available: true,\n    vendor_ramdisk_available: true,\n    recovery_available: true,\n    apex_available: [\n        \"\/\/apex_available:platform\",\n        \"\/\/apex_available:anyapex\",\n    ],  \n    \/\/ being part of updatable apexes, this should work on older releases\n    min_sdk_version: \"apex_inherit\",\n    whole_static_libs: [\"libc++_static\"],\n    stl: \"none\",\n\n    pgo: {\n        sampling: true,\n    },  \n\n    target: {\n        android: {\n            pgo: {\n                profile_file: \"libc++\/libc++.profdata\",\n            },  \n        },  \n        darwin: {\n            unexported_symbols_list: \"lib\/libc++unexp.exp\",\n            force_symbols_not_weak_list: \"lib\/notweak.exp\",\n            force_symbols_weak_list: \"lib\/weak.exp\",\n            ldflags: [\n                \"-Wl,-undefined,dynamic_lookup\",\n            ],  \n        },  \n\n        linux_bionic: {\n            enabled: true,\n        },\n    },                                                                                                                                                                                                      \n}\n<\/code><\/pre>\n\n\n\n
\u6211\u4eec\u53ef\u4ee5\u9009\u62e9\u7cfb\u7edf\u4e00\u4e9b\u5173\u952e\u57fa\u7840\u5e93\u6765\u67e5\u770b:<\/p>\n\n\n\n
trout_x86:\/ # ldd \/system\/lib\/liblog.so                                                                                                                                                                                   \n        linux-gate.so.1 => [vdso] (0xea103000)\n        libc++.so => \/system\/lib\/libc++.so (0xe9780000)\n        libc.so => \/apex\/com.android.runtime\/lib\/bionic\/libc.so (0xe9849000)\n        libm.so => \/apex\/com.android.runtime\/lib\/bionic\/libm.so (0xe9ec4000)\n        libdl.so => \/apex\/com.android.runtime\/lib\/bionic\/libdl.so (0xe9ea3000)\ntrout_x86:\/ # \ntrout_x86:\/ # ldd \/system\/lib\/libutils.so                                                                                                                                                                                 \n        linux-gate.so.1 => [vdso] (0xee3c4000)\n        libcutils.so => \/system\/lib\/libcutils.so (0xed9e9000)\n        liblog.so => \/system\/lib\/liblog.so (0xee113000)\n        libprocessgroup.so => \/system\/lib\/libprocessgroup.so (0xed952000)\n        libvndksupport.so => \/system\/lib\/libvndksupport.so (0xee092000)\n        libc++.so => \/system\/lib\/libc++.so (0xed881000)\n        libc.so => \/apex\/com.android.runtime\/lib\/bionic\/libc.so (0xeda11000)\n        libm.so => \/apex\/com.android.runtime\/lib\/bionic\/libm.so (0xed7c5000)\n        libdl.so => \/apex\/com.android.runtime\/lib\/bionic\/libdl.so (0xed80a000)\n        libbase.so => \/system\/lib\/libbase.so (0xee0c0000)\n        libcgrouprc.so => \/system\/lib\/libcgrouprc.so (0xee05f000)\n        libdl_android.so => \/apex\/com.android.runtime\/lib\/bionic\/libdl_android.so (0xed85e000)\ntrout_x86:\/ # <\/code><\/pre>\n\n\n\n
\u65e0\u4e00\u4f8b\u5916\u8fd9\u4e9b\u7cfb\u7edf\u57fa\u7840\u5e93\u90fd\u662f\u4f7f\u7528libc++.so.<\/p>\n\n\n\n
NDK STL:<\/strong>\u8fd9\u662fAndroid NDK\u5185\u9884\u7f16\u8bd1\u597d\u7684STL\u5e93\uff0c\u5176\u6e90\u7801\u4f4d\u4e8eprebuilts\/ndk\/current\/sources\/cxx-stl\/llvm-libc++\uff0c\u5305\u542b\u5171\u4eab\u5e93libc++shared.so\u548c\u9759\u6001\u5e93libc++<\/em>_static.a<\/strong>\uff0c\u5176\u4f7f\u7528Android.mk\u8fdb\u884c\u5b9a\u4e49\uff1a<\/p>\n\n\n\n
include $(CLEAR_VARS)\nLOCAL_MODULE := c++_static\nLOCAL_LICENSE_KINDS := SPDX-license-identifier-Apache-2.0\nLOCAL_LICENSE_CONDITIONS := notice\nLOCAL_NOTICE_FILE := $(LOCAL_PATH)\/..\/..\/..\/..\/NOTICE\nLOCAL_SRC_FILES := $(libcxx_sources)\nLOCAL_C_INCLUDES := $(libcxx_includes)\nLOCAL_CPPFLAGS := $(libcxx_cxxflags) -ffunction-sections -fdata-sections\nLOCAL_CPP_FEATURES := rtti exceptions\nLOCAL_EXPORT_C_INCLUDES := $(libcxx_export_includes)\nLOCAL_EXPORT_CPPFLAGS := $(libcxx_export_cxxflags)\nLOCAL_EXPORT_LDFLAGS := $(libcxx_export_ldflags)\nLOCAL_STATIC_LIBRARIES := libc++abi\nLOCAL_ARM_NEON := false\n\nifeq ($(NDK_PLATFORM_NEEDS_ANDROID_SUPPORT),true)\n    LOCAL_STATIC_LIBRARIES += android_support\nendif\n\nLOCAL_STATIC_LIBRARIES += libunwind\nLOCAL_EXPORT_STATIC_LIBRARIES += libunwind\ninclude $(BUILD_STATIC_LIBRARY)\n\ninclude $(CLEAR_VARS)\nLOCAL_MODULE := c++_shared\nLOCAL_LICENSE_KINDS := SPDX-license-identifier-Apache-2.0\nLOCAL_LICENSE_CONDITIONS := notice\nLOCAL_NOTICE_FILE := $(LOCAL_PATH)\/..\/..\/..\/..\/NOTICE\nLOCAL_STRIP_MODE := none\nLOCAL_SRC_FILES := $(libcxx_sources)\nLOCAL_C_INCLUDES := $(libcxx_includes)\nLOCAL_CPPFLAGS := $(libcxx_cxxflags) -fno-function-sections -fno-data-sections\nLOCAL_CPP_FEATURES := rtti exceptions\nLOCAL_WHOLE_STATIC_LIBRARIES := libc++abi\nLOCAL_EXPORT_C_INCLUDES := $(libcxx_export_includes)\nLOCAL_EXPORT_CPPFLAGS := $(libcxx_export_cxxflags)\nLOCAL_EXPORT_LDFLAGS := $(libcxx_export_ldflags)\nifeq ($(NDK_PLATFORM_NEEDS_ANDROID_SUPPORT),true)\n    LOCAL_STATIC_LIBRARIES := android_support\nendif<\/code><\/pre>\n\n\n\n
\u5173\u4e8e\u8fd9\u4e24\u79cdSTL\u7684\u8054\u7cfb\u4e0e\u533a\u522b\uff0c\u8fd9\u91cc\u7b80\u5355\u4f8b\u4e3e\u4e00\u4e0b\uff1a<\/p>\n\n\n\n
1.\u4e24\u8005\u540c\u4e3aLLVM\u5b9e\u73b0\uff0c\u4e0d\u8fc7NDK\u81ea\u5e26\u7684STL\u5c5e\u4e8e\u5168\u6807\u51c6\u7684C++\u5e93\uff0c\u652f\u6301rtti\u4e0eexceptions\uff1b\u800cAndroid Runtime\u4e2d\u6240\u4f7f\u7528\u7684STL\u4e0d\u652f\u6301rtti\u4e0eexceptions\uff1b<\/p>\n\n\n\n
2. NDK\u81ea\u5e26\u7684STL \u547d\u540d\u7a7a\u95f4\u4f1a\u589e\u52a0std::__ndk1\uff0c\u800c Android Runtime\u7684STL\u547d\u540d\u7a7a\u95f4\u4f1a\u589e\u52a0 std::__1\uff0c\u8fd9\u70b9\u5f88\u91cd\u8981\uff0c\u662f\u5bfc\u81f4\u6211\u4eec\u94fe\u63a5\u65f6\u51fa\u73b0undefined symbol\u7684\u5173\u952e\u539f\u56e0\uff0c\u6211\u4eec\u8fd9\u91cc\u53ef\u4ee5\u4e3e\u4e2a\u4f8b\u5b50\uff0c\u4ee5libbase.so\u7684\u4e2d\u7684\u63a5\u53e3ReadFileToString\u4e3a\u4f8b\uff0c\u51fd\u6570\u539f\u578b\u4e3a\uff1a<\/p>\n\n\n\n
android::base::ReadFileToString(std::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, std::basic_string<char, std::char_traits<char>, std::allocator<char> >*)<\/code><\/pre>\n\n\n\n
\u5047\u5982\u6211\u4eec\u4f7f\u7528gnustl STL\u6807\u51c6\u5e93\u8fdb\u884c\u7f16\u8bd1\uff0c\u5176\u5f97\u5230\u7684symbol\u8868\u5e94\u8be5\u662f\u8fd9\u6837\u7684\uff1a<\/p>\n\n\n\n
\nandroid::base::ReadFileToString(std::basic_string<char, std::char_traits<char>, std::allocator<char> > const&, std::basic_string<char, std::char_traits<char>, std::allocator<char> >*)<\/code><\/pre>\n\n\n\n
\u5047\u5982\u6211\u4eec\u4f7f\u7528NDK\u81ea\u5e26\u7684STL\u6807\u51c6\u5e93\u8fdb\u884c\u7f16\u8bd1\uff0c\u5176\u5f97\u5230\u7684symbol\u8868\u5219\u662f\u8fd9\u6837\u7684\uff1a<\/p>\n\n\n\n
android::base::ReadFileToString(std::__ndk1::basic_string<char, std::__ndk1::char_traits<char>, std::__ndk1::allocator<char> > const&, std::__ndk1::basic_string<char, std::__ndk1::char_traits<char>, std::__ndk1::allocator<char> >*)<\/code><\/pre>\n\n\n\n
\u5047\u5982\u6211\u4eec\u4f7f\u7528Android Runtime\u81ea\u5e26\u7684STL\u6807\u51c6\u5e93\u8fdb\u884c\u7f16\u8bd1\uff0c\u5f97\u5230\u7684symbol\u5219\u662f\u8fd9\u6837\u7684\uff1a<\/p>\n\n\n\n
android::base::ReadFileToString(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&, std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> >*)<\/code><\/pre>\n\n\n\n
\u8fd9\u91cc\u6211\u4eec\u4e5f\u53ef\u4ee5\u67e5\u770b\u5b9e\u9645\u7684symbol\u5177\u4f53\u662f\u4ec0\u4e48\u6837\u7684\uff1a<\/p>\n\n\n\n
bcd@bstcd-OptiPlex-7090:\/mnt\/disk\/libraries$ nm -D libbase.so | grep ReadFileToString | xargs c++filt\n00012990\nT\nandroid::base::ReadFileToString(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&, std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> >*, bool)\nbcd@bstcd-OptiPlex-7090:\/mnt\/disk\/libraries$ <\/code><\/pre>\n\n\n\n
\u4ece\u8fd9\u4e2asymbol\u6765\u770b\uff0clibbase.so\u6240\u4f7f\u7528\u7684STL\u5e93\u5373\u4e3aAndroid Runtime\u81ea\u5e26\u7684STL\u6807\u51c6\u5e93\uff1alic++.so\uff0c\u6211\u4eecldd\u770b\u4e00\u4e0b\uff1a<\/p>\n\n\n\n
trout_x86:\/ # ldd \/system\/lib\/libbase.so                                                                                                                                                                                  \n        linux-gate.so.1 => [vdso] (0xf4a71000)\n        liblog.so => \/system\/lib\/liblog.so (0xf47aa000)\n        libc++.so => \/system\/lib\/libc++.so (0xf4084000)\n        libc.so => \/apex\/com.android.runtime\/lib\/bionic\/libc.so (0xf4153000)\n        libm.so => \/apex\/com.android.runtime\/lib\/bionic\/libm.so (0xf47c3000)\n        libdl.so => \/apex\/com.android.runtime\/lib\/bionic\/libdl.so (0xf4072000)\ntrout_x86:\/ # <\/code><\/pre>\n\n\n\n
\u5370\u8bc1\u65e0\u8bef\u3002<\/p>\n\n\n\n
System STL<\/strong>:\u9664\u4e86\u4e0a\u8ff0\u4e24\u79cdSTL\u5e93\uff0cAndroid\u5185\u8fd8\u6709\u53e6\u5916\u4e00\u79cd\u7cfb\u7edf\u5e93\uff0c\u4e5f\u5c31\u662f\u7531bionic\u63d0\u4f9b\u7684libstdc++\uff0c\u5176\u6e90\u7801\u4f4d\u4e8e\/bionic\/libc\u76ee\u5f55\u5185\uff0c\u4f7f\u7528Android.bp\u8fdb\u884c\u5b9a\u4e49\uff0c\u5176\u7f16\u8bd1\u4ea7\u7269\u4e3alibstdc++.so\u4e0elibstdc++.a\uff0c\u5176\u4e2d libstdc++.so \u4f4d\u4e8e\u7f16\u8bd1\u540e\u5c06\u88abinstall\u81f3\/system\/lib\u76ee\u5f55\uff1a<\/p>\n\n\n\n
\n\/\/ ========================================================\n\/\/ libstdc++.so and libstdc++.a.\n\/\/ ========================================================\n\ncc_library {\n    defaults: [\"libc_defaults\"],\n    include_dirs: [\"bionic\/libstdc++\/include\"],\n    srcs: [\n        \"bionic\/__cxa_guard.cpp\",\n        \"bionic\/__cxa_pure_virtual.cpp\",\n        \"bionic\/new.cpp\",\n    ],   \n    name: \"libstdc++\",\n    static_ndk_lib: true,\n    static_libs: [\"libasync_safe\"],\n\n    static: {\n        system_shared_libs: [],\n    },   \n    shared: {\n        system_shared_libs: [\"libc\"],\n    },\n\n    \/\/TODO (dimitry): This is to work around b\/24465209. Remove after root cause is fixed\n    arch: {\n        arm: {\n            \/\/ TODO: This is to work around b\/24465209. Remove after root cause is fixed.\n            pack_relocations: false,\n            ldflags: [\"-Wl,--hash-style=both\"],\n            version_script: \":libstdc++.arm.map\",\n        },\n        arm64: {\n            version_script: \":libstdc++.arm64.map\",\n        },\n        x86: {\n            pack_relocations: false,\n            ldflags: [\"-Wl,--hash-style=both\"],\n            version_script: \":libstdc++.x86.map\",\n        },\n        x86_64: {\n            version_script: \":libstdc++.x86_64.map\",\n        },\n    },\n}\n\ngenrule {\n    name: \"libstdc++.arm.map\",\n    out: [\"libstdc++.arm.map\"],\n    srcs: [\"libstdc++.map.txt\"],\n    tool_files: [\":bionic-generate-version-script\"],                                                                                                                                               \n    cmd: \"$(location :bionic-generate-version-script) arm $(in) $(out)\",\n}\n<\/code><\/pre>\n\n\n\n
System STL\u6807\u51c6\u5e93\u652f\u6301\u57fa\u7840\u7684C++\u8fd0\u884c\u65f6ABI\uff0c\u6839\u672c\u4e0a\u800c\u8a00\u4e5f\u5c31\u662fnew\u548cdelete\uff0c\u8be5\u5e93\u540c\u6837\u4e0d\u652f\u6301\u5f02\u5e38\u5904\u7406\u548cRTTI\u3002<\/p>\n\n\n\n
\u8fd9\u91cc\u518d\u7b80\u5355\u603b\u7ed3\u4e00\u4e0b\uff0cAndroid\u7cfb\u7edf\u5185\u7684STL\u652f\u6301\u4ece\u6e90\u5934\u6765\u8bb2\u5206\u4e3a\u4e24\u7c7b\uff0c\u4e00\u7c7b\u662f\u8ddf\u968fAndroid\u7248\u672c\u81ea\u8eab\uff0c\u4e5f\u5c31\u662fAndroid Runtime\u4f7f\u7528\u7684libc++.so\uff1b\u53e6\u4e00\u7c7b\u5219\u662f\u7531NDK\u63d0\u4f9b\u7684\uff0c\u5206\u4e3alibc++shared.so\/libc++<\/em>_static.a\u4ee5\u53calibstdc++.so.<\/p>\n\n\n\n
NDK \u7f16\u8bd1STL\u8bbe\u5b9a<\/h4>\n\n\n\n
\u6211\u4eec\u5df2\u7ecf\u77e5\u9053\u4e86\u5728Android\u6e90\u7801\u5185\u63d0\u4f9b\u4e86\u591a\u79cdSTL\u652f\u6301\uff0c\u5176\u4e2dAndroid Runtime STL\u4e5f\u5c31\u662flibc++.so\u662fAOSP\u9ed8\u8ba4\u7f3a\u7701\u4f7f\u7528\u7684STL\uff0c\u4f46\u5728NDK\u5f00\u53d1\u4e2d\u662f\u65e0\u6cd5\u4f7f\u7528\u8be5STL\u7684\uff0c\u4ee5\u5f53\u524d\u6700\u65b0\u7684NDK\u7248\u672cr25b\u4e3a\u4f8b\uff0c\u63d0\u4f9b\u7684STL\u8bbe\u5b9a\u9009\u9879\u5305\u62ec\u4e09\u79cd\uff1alibc++\\system\\none\uff0c\u5728\u7f16\u8bd1\u9636\u6bb5\u4f7f\u7528\u540d\u79f0\u6307\u4ee3\u65f6\u5206\u4e3ac++_shared,c++_static,none,\u6216system\uff0c\u524d\u4e24\u8005\u90fd\u662flibc++.<\/p>\n\n\n\n
\u521d\u6b21\u4e00\u770b\uff0c\u76f8\u6bd4\u5927\u5bb6\u90fd\u6bd4\u8f83\u7591\u60d1\uff0clibc++\u662f\u4e0d\u662f\u5c31\u5bf9\u5e94libc++.so\u5462\uff0c\u5f53\u7136\u4e0d\u662f\u4e86\u3002\u8fd9\u91cc\u4f8b\u4e3e\u8fd9\u4e09\u4e2a\u9009\u9879\u6240\u5bf9\u5e94\u7684\u5177\u4f53\u7684STL\u6807\u51c6\u5e93\uff1a<\/p>\n\n\n\n
libc++\u9009\u9879\uff1a\u5305\u542b\u5171\u4eab\u5e93libc++shared.so\uff0c\u9759\u6001\u5e93libc++<\/em>static.a.<\/p>\n\n\n\n
system\u9009\u9879\uff1a\u5bf9\u5e94\u4e8elibstdc++.so.<\/p>\n\n\n\n
none\u9009\u9879\uff1a\u4e0d\u63d0\u4f9bSTL\u652f\u6301.<\/p>\n\n\n\n
\u4e8b\u5b9e\u4e0a\u5728NDK r18\u4e4b\u524d\uff0cNDK\u4e2d\u8fd8\u63d0\u4f9b\u4e86gnustl\u548cstlport\uff0c\u5728r18\u4e4b\u540e\u5219\u4e0d\u518d\u63d0\u4f9b\uff0c\u6b64\u65f6libc++.so\u5c5e\u4e8eAOSP\u6e90\u7801\u7f16\u8bd1\u65f6\u7f3a\u7701\u7684\u9ed8\u8ba4STL\u5e93\u3002<\/p>\n\n\n\n
\u5728\u4f7f\u7528NDK\u7f16\u8bd1\u5de5\u5177\u94fe\u65f6\uff0c\u6211\u4eec\u9700\u8981\u5bf9STL\u8fdb\u884c\u8bbe\u5b9a\uff0c\u8fd9\u91cc\u5c06\u7ed3\u5408\u4e0d\u540c\u7684\u7f16\u8bd1\u7cfb\u7edf\u6765\u8bf4\u660e\u5982\u4f55\u8fdb\u884c\u8bbe\u5b9a\u3002<\/p>\n\n\n\n
\u4f7f\u7528CMake\uff1a<\/strong><\/p>\n\n\n\n
\u5728\u4f7f\u7528CMake\u7ed3\u5408NDK\u7f16\u8bd1\u65f6\uff0c\u5177\u4f53\u5982\u4f55\u7f16\u8bd1\u53ef\u4ee5\u53c2\u8003\u6211\u7684\u6587\u7ae0<\/a>\u3002\u5728\u9ed8\u8ba4\u60c5\u51b5\u4e0b\uff0cCMake\u7f16\u8bd1\u7cfb\u7edf\u5c06\u4f1a\u4ee5c++static\u4f5c\u4e3aSTL\u5e93\u652f\u6301\uff0c\u4f46\u6211\u4eec\u53ef\u4ee5\u901a\u8fc7ANDROID<\/em>_STL\u53d8\u91cf\u6765\u6307\u5b9a\u4f7f\u7528\u5177\u4f53\u7684STL\u652f\u6301\uff0c\u5982\u4e0b\u6240\u793a\uff1a<\/p>\n\n\n\n
-DANDROID_STL=c++_shared \n-DANDROID_STL=c++_static\n-DANDROID_STL=system\n-DANDROID_STL=none\n<\/code><\/pre>\n\n\n\n
\u4f7f\u7528NDK-Build\uff1a<\/strong><\/p>\n\n\n\n
\u5728\u4f7f\u7528NDK-Build\u7f16\u8bd1\u65f6\uff0c\u9ed8\u8ba4\u4e0d\u63d0\u4f9bSTL\u5e93\u652f\u6301\uff0c\u4f46\u6211\u4eec\u5982\u679c\u9700\u8981\u6307\u5b9aSTL\u652f\u6301\uff0c\u9700\u8981\u5728Application.mk\u5185\u901a\u8fc7APP_STL\u6765\u8fdb\u884c\u6307\u5b9a\uff0c\u53ef\u9009\u62e9\u4e0eCMake\u4e00\u81f4\uff0c\u5206\u522b\u4e3ac++_shared\u3001c++_static\u3001system\u4e0enone.<\/p>\n\n\n\n
\u6e90\u7801\u7f16\u8bd1STL\u8bbe\u5b9a<\/h4>\n\n\n\n
\u5982\u679c\u6211\u4e0d\u9700\u8981\u4f7f\u7528NDK\u8fdb\u884c\u7f16\u8bd1\uff0c\u800c\u662f\u76f4\u63a5\u5728AOSP\u6e90\u7801\u73af\u5883\u5185\u7f16\u8bd1\u65f6\uff0c\u8be5\u5982\u4f55\u8fdb\u884cSTL\u5e93\u7684\u8bbe\u5b9a\u5462\uff0c\u8fd9\u91cc\u6211\u4eec\u5c06\u5206\u522b\u4ee5Android.mk\u548cAndroid.bp\u5185\u7684\u8bbe\u5b9a\u4e3a\u4f8b\u3002<\/p>\n\n\n\n
Android.mk<\/strong>\uff1a\u5982\u679c\u6ca1\u6709\u7279\u6b8a\u8bbe\u5b9a\uff0c\u5c06\u4f1a\u4ee5libc++.so\u4f5c\u4e3a\u6807\u51c6STL\u652f\u6301\uff0c\u5982\u679c\u6211\u4eec\u9700\u8981\u4f7f\u7528\u53e6\u5916\u4e24\u79cd\uff0c\u4e5f\u5c31\u662fNDK\u652f\u6301\u7684libc++\u548csystem\uff0c\u9700\u8981\u8fdb\u884c\u989d\u5916\u8bbe\u5b9a\uff0c\u4e3b\u8981\u8bbe\u5b9a\u5305\u62ec\uff1a<\/p>\n\n\n\n
LOCAL_SDK_VERSION\uff1a\u6307\u5b9aSDK\u7248\u672c\uff0c\u4e5f\u5c31\u662fAndroid API\u7ea7\u522b.<\/p>\n\n\n\n
LOCAL_NDK_STL_VARIANT:\u6307\u5b9a\u5177\u4f53\u7684STL\u652f\u6301\uff0c\u5206\u4e3a c++_shared\u3001c++_static\u3001system\u4e0enone.\uff0c\u4e5f\u5c31\u662fNDK\u63d0\u4f9b\u7684STL\u652f\u6301\u3002<\/p>\n\n\n\n
Android.bp:<\/strong>\u5728Android.bp\u4e2d\u6307\u5b9aSTL\u5e93\u652f\u6301\uff0c\u9700\u8981\u5206\u662f\u5426\u6307\u5b9a\u4e86sdk_version\u5b57\u6bb5\u8fd9\u4e24\u79cd\u60c5\u51b5\u3002<\/p>\n\n\n\n
\u6307\u5b9asdk_version\u65f6<\/strong>\uff1a\u5c06\u4f1a\u4ee5NDK\u4e2d\u63d0\u4f9b\u7684STL\u5e93\u4f5c\u4e3a\u652f\u6301\uff0c\u4ee5stl\u5b57\u6bb5\u4f5c\u4e3a\u6807\u8bc6\uff0c\u5982\u4e0b\u6240\u793a\uff1a<\/p>\n\n\n\n
cc_library_shared{\n\n   sdk_version:\"current\",\n   stl: \"libc++\",\n   \/\/\u5176\u4e2dstl\u7684\u53ef\u9009\u503c\u4e0e\u5bf9\u5e94\u5173\u7cfb\uff1a\n   \/\/ \"\"              -> \"ndk_system\",libstdc++.so\n   \/\/\"system\"        -> \"ndk_system\",libstdc++.so\n   \/\/\"c++_shared\"    -> \"ndk_libc++_shared\",libc++_shared.so\n   \/\/\"c++_static\"    -> \"ndk_libc++_static\",libc++_static.a\n   \/\/\"libc++\"        -> \"ndk_libc++_shared\",libc++_shared.so\n   \/\/\"libc++_static\" -> \"ndk_libc++_static\",libc++_static.a\n   \/\/\"none\"          -> \"\",\u65e0\n\n}<\/code><\/pre>\n\n\n\n
\u672a\u6307\u5b9asdk_version\u65f6<\/strong>\uff1a\u6b64\u65f6\u8bbe\u5b9astl\u5b57\u6bb5\uff0c\u4f1a\u4ee5Android Runtime\u4e2d\u63d0\u4f9b\u7684STL\u5e93\u4f5c\u4e3a\u652f\u6301\uff0c\u5982\u4e0b\u6240\u793a\uff1a<\/p>\n\n\n\n
cc_library_shared{\n\n   stl: \"libc++\",\n   \/\/\u5176\u4e2dstl\u7684\u53ef\u9009\u503c\u4e0e\u5bf9\u5e94\u5173\u7cfb\uff1a\n   \/\/ \"\"             -> \"libc++_static\",libc++_static.a\n   \/\/\"system\"        -> \"libc++_static\",libc++_static.a\n   \/\/\"c++_shared\"    -> \"libc++\",libc++.so\n   \/\/\"c++_static\"    -> \"libc++_static\",libc++_static.a\n   \/\/\"libc++\"        -> \"libc++\",libc++.so\n   \/\/\"libc++_static\" -> \"libc++_static\",libc++_static.a\n   \/\/\"none\"          -> \"\",\u65e0\n\n}<\/code><\/pre>\n\n\n\n
\u8fd9\u91cc\u7b80\u5355\u603b\u7ed3\u4e00\u4e0b\uff1a<\/p>\n\n\n\n
1.Android.mk\u4e2d\u4ee5LOCAL_NDK_STL_VARIANT\u6307\u5b9aNDK\u91cc\u7684STL\uff1b<\/p>\n\n\n\n
2.Android.bp\u4e2d\u4ee5stl\u5b57\u6bb5\u6307\u5b9aSTL\uff0c\u4ee5sdk_version\u5b57\u6bb5\u662f\u5426\u6307\u5b9a\u6765\u533a\u5206\u662fNDK STL\u8fd8\u662fAndroid Runtime STL;<\/p>\n\n\n\n
Others<\/h4>\n\n\n\n
\u5173\u4e8eNDK\u7f16\u8bd1\u7684\u4f7f\u7528\u573a\u666f\uff0c\u8fd9\u91cc\u9700\u8981\u505a\u8fdb\u4e00\u6b65\u8bf4\u660e\u3002NDK\u7f16\u8bd1\u672c\u8eab\u662f\u4e3aAndroid APP\u5f00\u53d1\u51c6\u5907\u7684\uff0c\u65b9\u4fbfAPP\u5f00\u53d1\u8005\u4f7f\u7528C\/C++\u7684\u4ee3\u7801\uff0c\u800c\u6700\u7ec8\u7f16\u8bd1\u7684\u5e93\u4e5f\u662f\u4f1a\u4e00\u8d77\u6253\u5305\u5230APK\u5185\u3002\u5982\u679c\u6211\u4eec\u9700\u8981\u5c06\u7f16\u8bd1\u7684\u5e93\u7528\u4e8eAndroid\u7cfb\u7edf\uff0c\u653e\u7f6e\u4e8e\/system\/lib64\u6216\u8005\/system\/lib\u5185\uff0c\u9700\u8981\u5c06\u6e90\u7801\u653e\u5230AOSP Tree\u4e2d\u8fdb\u884c\u7f16\u8bd1\uff0c\u907f\u514dSTL\u4e0d\u5339\u914d\u95ee\u9898\u3002\u5173\u4e8e\u8fd9\u65b9\u9762\u7684\u5177\u4f53\u4fe1\u606f\uff0c\u53ef\u4ee5\u53c2\u8003\u8be5Issue<\/a>\uff0c\u8fd9\u4e00\u70b9\u662f\u9700\u8981\u6211\u4eec\u5728\u79fb\u690d\u4e4b\u524d\u5c31\u660e\u786e\u7684\u3002<\/p>\n        
\n            
\n                \n                
\n                    \n                        \"Happy\"\n                    <\/a>\n                    
\n                        Happy                    <\/div>\n                    
\n                                                    4<\/span>\n                        \n                                                67<\/span> %<\/span>\n                                            <\/div>\n                <\/div>\n\n                
\n                    \n                        \"Sad\"\n                    <\/a>\n                    
\n                        Sad                    <\/div>\n                    
\n                                                    2<\/span>\n                                                                        33<\/span> %<\/span>\n                                            <\/div>\n                <\/div>\n\n                
\n                    \n                        \"Excited\"\n                    <\/a>\n                    
\n                        Excited                    <\/div>\n                    
\n                                                    0<\/span>\n                                                                        0<\/span> %<\/span>\n                                            <\/div>\n                <\/div>\n\n                
\n                    \n                        \"Sleepy\"\n                    <\/a>\n                    
\n                        Sleepy                    <\/div>\n                    
\n                                                    0<\/span>\n                        \n                                                0<\/span> %<\/span>\n                                            <\/div>\n                <\/div>\n\n                
\n                    \n                        \"Angry\"\n                    <\/a>\n                    
Angry<\/div>\n                    
\n                                                    0<\/span>\n                                                                        0<\/span> %<\/span>\n                        \n                    <\/div>\n                <\/div>\n\n                
\n                    \n                        \"Surprise\"\n                    <\/a>\n                    
Surprise<\/div>\n                    
\n                                                    0<\/span>\n                                                                        0<\/span> %<\/span>\n                                            <\/div>\n                <\/div>\n\n            <\/div>\n        <\/div>","protected":false},"excerpt":{"rendered":"
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