大道之行，天下为公。这篇文章主要讲述Android NDK undefined引用google protobuf相关的知识，希望能为你提供帮助。
我正在尝试创建一个使用protobuf-lite和本机库的共享库。我一直在搜索，在使用Windows时我找不到任何与android Studio 3，google protobuf-lite和Android NDK相关的内容。我知道其他人不得不尝试做我正在做的同样的事情，但我的具体内容在我读过的任何内容中都不明显。
我在跑：

• Windows 10 64位
• Android Studio 3.0.1
• Android NDK r16
• protobuf-lite版本3.0.0
• 并针对armeabi-v7a

我使用DOCKER文件来创建libprotobuf-lite.so我正在使用。 DOCKER文件：

FROM debian:stretchENV ANDROID_NDK_HOME /build/android-ndk ENV ANDROID_NDK_VERSION=r16RUN set -e -x & & apt-get update & & apt-get install -y unzip wget#ADD android-ndk-${ANDROID_NDK_VERSION}-linux-x86_32.zip /build/android- ndk.zip RUN set -e -x & & mkdir /build & & cd /build & & wget -q https://dl.google.com/android/repository/android- ndk-${ANDROID_NDK_VERSION}-linux-x86_32.zip -O android-ndk.zip & & unzip -q android-ndk.zip & & mv ./android-ndk-${ANDROID_NDK_VERSION} ${ANDROID_NDK_HOME} & & rm android-ndk.zip#ADD protobuf-cpp-3.0.0.zip /build/protobuf.zip RUN set -e -x & & cd /build & & wget -q https://github.com/google/protobuf/releases/download/v3.0.0/protobuf-cpp- 3.0.0.zip -O protobuf-src.zip & & unzip protobuf-src.zip & & mv protobuf-3.0.0 protobuf & & rm protobuf-src.zipRUN set -e -x & & cd /build & & wget -q https://github.com/google/protobuf/releases/download/v3.0.0/protoc-3.0.0- linux-x86_32.zip -O protoc.zip & & mkdir protoc & & cd protoc & & unzip ../protoc.zip & & cd .. & & rm protoc.zipRUN set -e -x & & apt-get update & & apt-get install -y # protobuf compile autoconf automake libtool curl make g++ # additional compile not in readme libncurses5-dev # make_standalone_toolchain python # util nanoRUN /build/android-ndk/build/tools/make_standalone_toolchain.py --arch arm --install-dir /build/android-armADD build.sh /build WORKDIR /build/protobufCMD /bin/bash

我正在编写一个c ++库，可以从java端使用。我有一个Android.mk文件，我在Android Studio中使用它来构建本机库。
Android.mk文件：

LOCAL_PATH := $(call my-dir)include $(CLEAR_VARS) LOCAL_MODULE := protobuf-lite LOCAL_SRC_FILES := libprotobuf-lite.so LOCAL_CFLAGS:= -std=c++11 include $(PREBUILT_SHARED_LIBRARY)include $(CLEAR_VARS) LOCAL_MODULE := native-lib LOCAL_SRC_FILES := native-lib.cpp BeaconSearchResult.cpp fileformat.pb.cc Geopoint.cpp Location.cpp osmformat.pb.cc osmpbf.cpp OSMPBFread.cpp OSMPOISearch.cpp POI.cpp TARGET_ARCH_ABI := armeabi-v7a LOCAL_LDFLAGS := -lz -llog LOCAL_SHARED_LIBRARIES := libprotobuf-lite LOCAL_CPP_FEATURES := rtti LOCAL_CFLAGS:= -std=c++11 include $(BUILD_SHARED_LIBRARY)

我得到的错误是：

Error:(511) undefined reference to 'google::protobuf::internal::MergeFromFail(char const*, int)' Error:(521) undefined reference to 'google::protobuf::internal::ArenaStringPtr::AssignWithDefault(std::__ndk1::basic_string< char, std::__ndk1::char_traits< char> , std::__ndk1::allocator< char> > const*, google::protobuf::internal::ArenaStringPtr)' Error:(237) undefined reference to 'google::protobuf::io::LazyStringOutputStream::LazyStringOutputStream(google::protobuf::ResultCallback< std::__ndk1::basic_string< char, std::__ndk1::char_traits< char> , std::__ndk1::allocator< char> > *> *)' Error:(377) undefined reference to 'google::protobuf::io::LazyStringOutputStream::~LazyStringOutputStream()' Error:(390) undefined reference to 'google::protobuf::internal::WireFormatLite::WriteString(int, std::__ndk1::basic_string< char, std::__ndk1::char_traits< char> , std::__ndk1::all Error:(817) undefined reference to 'google::protobuf::io::CodedOutputStream::VarintSize64(unsigned long long)' Error:(830) undefined reference to 'google::protobuf::Arena::AddListNode(void*, void (*)(void*))' Error:(640) undefined reference to 'google::protobuf::Arena::AllocateAligned(std::type_info const*, unsigned int)'

这些错误出现在文件中：

• O生命format.旁边.曹操
• protobuf的/ wire_format_lite_inl.h
• protobuf / arena.h
• protobuf的/ generated_message_util.h
• 和fileformat.pb.cc

总共有49个错误。我知道我正在做的事情必须是正确的，因为如果我在Android.mk中取出LOCAL_SHARED_LIBRARIES的行，它会给我159个错误。我在我的智慧结束，我真的可以用一些新鲜的眼睛。如果您需要更多信息，请告诉我。
编辑：我在gradle控制台中发现了一些错误信息：

FAILURE: Build failed with an exception.* What went wrong: Execution failed for task ':app:externalNativeBuildDebug'. > Build command failed. Error while executing process C:UsersjkarrAppDataLocalAndroidSdk dk-bundle dk-build.cmd with arguments {NDK_PROJECT_PATH=null APP_BUILD_SCRIPT=C:UsersjkarrHellocmakeappsrcmainjniarmeabi-v7aAndroid.mk NDK_APPLICATION_MK=C:UsersjkarrHellocmakeappsrcmainjniarmeabi-v7aApplication.mk APP_ABI=armeabi-v7a NDK_ALL_ABIS=armeabi-v7a NDK_DEBUG=1 APP_PLATFORM=android-15 NDK_OUT=C:/Users/jkarr/Hellocmake/app/build/intermediates/ndkBuild/debug/obj NDK_LIBS_OUT=C:UsersjkarrHellocmakeappuildintermediates dkBuilddebuglib C:/Users/jkarr/Hellocmake/app/build/intermediates/ndkBuild/debug/obj/local/armeabi-v7a/libnative-lib.so} Android NDK: WARNING: Unsupported source file extensions in C:UsersjkarrHellocmakeappsrcmainjniarmeabi-v7aAndroid.mk for module native-lib Android NDK:TARGET_ARCH_ABI := armeabi-v7a [armeabi-v7a] SharedLibrary: libnative-lib.so C:/Users/jkarr/Hellocmake/app/src/main/jni/armeabi-v7a/osmformat.pb.cc:512: error: undefined reference to 'google::protobuf::internal::MergeFromFail(char const*, int)' C:/Users/jkarr/Hellocmake/app/src/main/jni/armeabi-v7a/osmformat.pb.cc:522: error: undefined reference to 'google::protobuf::internal::ArenaStringPtr::AssignWithDefault(std::__ndk1::basic_string< char, std::__ndk1::char_traits< char> , std::__ndk1::allocator< char> > const*, google::protobuf::internal::ArenaStringPtr)' C:/Users/jkarr/Hellocmake/app/src/main/jni/armeabi-v7a/osmformat.pb.cc:526: error: undefined reference to 'google::protobuf::internal::ArenaStringPtr::AssignWithDefault(std::__ndk1::basic_string< char, std::__ndk1::char_traits< char> , std::__ndk1::allocator< char> > const*, google::protobuf::internal::ArenaStringPtr)' C:/Users/jkarr/Hellocmake/app/src/main/jni/armeabi-v7a/osmformat.pb.cc:536: error: undefined reference to 'google::protobuf::internal::ArenaStringPtr::AssignWithDefault(std::__ndk1::basic_string< char, std::__ndk1::char_traits< char> , std::__ndk1::allocator< char> > const*, google::protobuf::internal::ArenaStringPtr)' C:/Users/jkarr/Hellocmake/app/src/main/jni/armeabi-v7a/google/include/protobuf/arena.h:830: error: undefined reference to 'google::protobuf::Arena::AddListNode(void*, void (*)(void*))' C:/Users/jkarr/Hellocmake/app/src/main/jni/armeabi-v7a/osmformat.pb.cc:238: error: undefined reference to 'google::protobuf::io::LazyStringOutputStream::LazyStringOutputStream(google::protobuf::ResultCallback< std::__ndk1::basic_string< char, std::__ndk1::char_traits< char> , std::__ndk1::allocator< char> > *> *)' C:/Users/jkarr/Hellocmake/app/src/main/jni/armeabi-v7a/osmformat.pb.cc:378: error: undefined reference to 'google::protobuf::io::LazyStringOutputStream::~LazyStringOutputStream()' C:/Users/jkarr/Hellocmake/app/src/main/jni/armeabi-v7a/osmformat.pb.cc:391: error: undefined reference to 'google::protobuf::internal::WireFormatLite::WriteString(int, std::__ndk1::basic_string< char, std::__ndk1::char_traits< char> , std::__ndk1::allocator< char> > const& , google::protobuf::io::CodedOutputStream*)' C:/Users/jkarr/Hellocmake/app/src/main/jni/armeabi-v7a/osmformat.pb.cc:397: error: undefined reference to 'google::protobuf::internal::WireFormatLite::WriteString(int, std::__ndk1::basic_string< char, std::__ndk1::char_traits< char> , std::__ndk1::allocator< char> > const& , google::protobuf::io::CodedOutputStream*)' C:/Users/jkarr/Hellocmake/app/src/main/jni/armeabi-v7a/osmformat.pb.cc:403: error: undefined reference to 'google::protobuf::internal::WireFormatLite::WriteStringMaybeAliased(int, std::__ndk1::basic_string< char, std::__ndk1::char_traits< char> , std::__ndk1::allocator< char> > const& , google::protobuf::io::CodedOutputStream*)' C:/Users/jkarr/Hellocmake/app/src/main/jni/armeabi-v7a/osmformat.pb.cc:409: error: undefined reference to 'google::protobuf::internal::WireFormatLite::WriteStringMaybeAliased(int, std::__ndk1::basic_string< char, std::__ndk1::char_traits< char> , std::__ndk1::allocator< char> > const& , google::protobuf::io::CodedOutputStream*)' C:/Users/jkarr/Hellocmake/app/src/main/jni/armeabi-v7a/osmformat.pb.cc:425: error: undefined reference to 'google::protobuf::internal::WireFormatLite::WriteStringMaybeAliased(int, std::__ndk1::basic_string< char, std::__ndk1::char_traits< char> , std::__ndk1::allocator< char> > const& , google::protobuf::io::CodedOutputStream*)' C:/Users/jkarr/Hellocmake/app/src/main/jni/armeabi-v7a/google/include/protobuf/wire_format_lite_inl.h:817: error: undefined reference to 'google::protobuf::io::CodedOutputStream::VarintSize64(unsigned long long)' C:/Users/jkarr/Hellocmake/app/src/main/jni/armeabi-v7a/osmformat.pb.cc:1267: error: undefined reference to 'google::protobuf::internal::MergeFromFail(char const*, int)' C:/Users/jkarr/Hellocmake/app/src/main/jni/armeabi-v7a/google/include/protobuf/arena.h:830: error: undefined reference to 'google::protobuf::Arena::AddListNode(void*, void (*)(void*))' C:/Users/jkarr/Hellocmake/app/src/main/jni/armeabi-v7a/osmformat.pb.cc:1069: error: undefined reference to 'google::protobuf::io::LazyStringOutputStream::LazyStringOutputStream(google::protobuf::ResultCallback< std::__ndk1::basic_string< char, std::__ndk1::char_traits< char> , std::__ndk1::allocator< char> > *> *)' C:/Users/jkarr/Hellocmake/app/src/main/jni/armeabi-v7a/osmformat.pb.cc:1159: error: undefined reference to 'google::protobuf::io::LazyStringOutputStream::~LazyStringOutputStream()' C:/Users/jkarr/Hellocmake/app/src/main/jni/armeabi-v7a/google/include/protobuf/wire_format_lite_inl.h:829: error: undefined reference to 'google::protobuf::io::CodedOutputStream::VarintSize64(unsigned long long)' C:/Users/jkarr/Hellocmake/app/src/main/jni/armeabi-v7a/osmformat.pb.cc:1760: error: undefined reference to 'google::protobuf::internal::MergeFromFail(char const*, int)' C:/Users/jkarr/Hellocmake/app/src/main/jni/armeabi-v7a/google/include/protobuf/arena.h:830: error: undefined reference to 'google::protobuf::Arena::AddListNode(void*, void (*)(void*))' C:/Users/jkarr/Hellocmake/app/src/main/jni/armeabi-v7a/osmformat.pb.cc:1534: error: undefined reference to 'google::protobuf::io::LazyStringOutputStream::LazyStringOutputStream(google::protobuf::ResultCallback< std::__ndk1::basic_string< char, std::__ndk1::char_traits< char> , std::__ndk1::allocator< char> > *> *)' C:/Users/jkarr/Hellocmake/app/src/main/jni/armeabi-v7a/osmformat.pb.cc:1654: error: undefined reference to 'google::protobuf::io::LazyStringOutputStream::~LazyStringOutputStream()' C:/Users/jkarr/Hellocmake/app/src/main/jni/armeabi-v7a/osmformat.pb.cc:2712: error: undefined reference to 'google::protobuf::internal::MergeFromFail(char const*, int)' C:/Users/jkarr/Hellocmake/app/src/main/jni/armeabi-v7a/google/include/protobuf/arena.h:830: error: undefined reference to 'google::protobuf::Arena::AddListNode(void*, void (*)(void*))' C:/Users/jkarr/Hellocmake/app/src/main/jni/armeabi-v7a/osmformat.pb.cc:2104: error: undefined reference to 'google::protobuf::io::LazyStringOutputStream::LazyStringOutputStream(google::protobuf::ResultCallback< std::__ndk1::basic_string< char, std::__ndk1::char_traits< char> , std::__ndk1::allocator< char> > *> *)' C:/Users/jkarr/Hellocmake/app/src/main/jni/armeabi-v7a/osmformat.pb.cc:2213: error: undefined reference to 'google::protobuf::io::LazyStringOutputStream::~LazyStringOutputStream()' C:/Users/jkarr/Hellocmake/app/src/main/jni/armeabi-v7a/osmformat.pb.cc:2639: error: undefined reference to 'google::protobuf::internal::WireFormatLite::ReadBytes(google::protobuf::io::CodedInputStream*, std::__ndk1::basic_string< char, std::__ndk1::char_traits< char> , std::__ndk1::allocator< char> > *)' C:/Users/jkarr/Hellocmake/app/src/main/jni/armeabi-v7a/osmformat.pb.cc:2676: error: undefined reference to 'google::protobuf::internal::WireFormatLite::WriteBytes(int, std::__ndk1::basic_string< char, std::__ndk1::char_traits< char> , std::__ndk1::allocator< char> > const& , google::protobuf::io::CodedOutputStream*)' C:/Users/jkarr/Hellocmake/app/src/main/jni/armeabi-v7a/google/include/protobuf/wire_format_lite_inl.h:544: error: undefined reference to 'google::protobuf::io::CodedOutputStream::WriteVarint64(unsigned long long)' C:/Users/jkarr/Hellocmake/app/src/main/jni/armeabi-v7a/google/include/protobuf/wire_format_lite_inl.h:544: error: undefined reference to 'google::protobuf::io::CodedOutputStream::WriteVarint64(unsigned long long)' C:/Users/jkarr/Hellocmake/app/src/main/jni/armeabi-v7a/google/include/protobuf/wire_format_lite_inl.h:544: error: undefined reference to 'google::protobuf::io::CodedOutputStream::WriteVarint64(unsigned long long)' C:/Users/jkarr/Hellocmake/app/src/main/jni/armeabi-v7a/google/include/protobuf/wire_format_lite_inl.h:544: error: undefined reference to 'google::protobuf::io::CodedOutputStream::WriteVarint64(unsigned long long)' C:/Users/jkarr/Hellocmake/app/src/main/jni/armeabi-v7a/google/include/protobuf/arena.h:640: error: undefined reference to 'google::protobuf::Arena::AllocateAligned(std::type_info const*, unsigned int)' C:/Users/jkarr/Hellocmake/app/src/main/jni/armeabi-v7a/google/include/protobuf/arena.h:640: error: undefined reference to 'google::protobuf::Arena::AllocateAligned(std::type_info const*, unsigned int)' C:/Users/jkarr/Hellocmake/app/src/main/jni/armeabi-v7a/google/include/protobuf/arena.h:640: error: undefined reference to 'google::protobuf::Arena::AllocateAligned(std::type_info const*, unsigned int)' C:/Users/jkarr/Hellocmake/app/src/main/jni/armeabi-v7a/google/include/protobuf/arena.h:640: error: undefined reference to 'google::protobuf::Arena::AllocateAligned(std::type_info const*, unsigned int)' C:/Users/jkarr/Hellocmake/app/src/main/jni/armeabi-v7a/fileformat.pb.cc:372: error: undefined reference to 'google::protobuf::internal::ArenaStringPtr::AssignWithDefault(std::__ndk1::basic_string< char, std::__ndk1::char_traits< char> , std::__ndk1::allocator< char> > const*, google::protobuf::internal::ArenaStringPtr)' C:/Users/jkarr/Hellocmake/app/src/main/jni/armeabi-v7a/google/include/protobuf/generated_message_util.h:87: error: undefined reference to 'google::protobuf::internal::empty_string_' C:/Users/jkarr/Hellocmake/app/src/main/jni/armeabi-v7a/google/include/protobuf/generated_message_util.h:87: error: undefined reference to 'google::protobuf::internal::empty_string_' C:/Users/jkarr/Hellocmake/app/src/main/jni/armeabi-v7a/fileformat.pb.cc:188: error: undefined reference to 'google::protobuf::internal::WireFormatLite::ReadBytes(google::protobuf::io::CodedInputStream*, std::__ndk1::basic_string< char, std::__ndk1::char_traits< char> , std::__ndk1::allocator< char> > *)' C:/Users/jkarr/Hellocmake/app/src/main/jni/armeabi-v7a/fileformat.pb.cc:216: error: undefined reference to 'google::protobuf::internal::WireFormatLite::ReadBytes(google::protobuf::io::CodedInputStream*, std::__ndk1::basic_string< char, std::__ndk1::char_traits< char> , std::__ndk1::allocator< char> > *)' C:/Users/jkarr/Hellocmake/app/src/main/jni/armeabi-v7a/fileformat.pb.cc:229: error: undefined reference to 'google::protobuf::internal::WireFormatLite::ReadBytes(google::protobuf::io::CodedInputStream*, std::__ndk1::basic_string< char, std::__ndk1::char_traits< char> , std::__ndk1::allocator< char> > *)' C:/Users/jkarr/Hellocmake/app/src/main/jni/armeabi-v7a/fileformat.pb.cc:278: error: undefined reference to 'google::protobuf::internal::WireFormatLite::WriteBytesMaybeAliased(int, std::__ndk1::basic_string< char, std::__ndk1::char_traits< char> , std::__ndk1::allocator< char> > const& , google::protobuf::io::CodedOutputStream*)' C:/Users/jkarr/Hellocmake/app/src/main/jni/armeabi-v7a/fileformat.pb.cc:289: error: undefined reference to 'google::protobuf::internal::WireFormatLite::WriteBytesMaybeAliased(int, std::__ndk1::basic_string< char, std::__ndk1::char_traits< char> , std::__ndk1::allocator< char> > const& , google::protobuf::io::CodedOutputStream*)' C:/Users/jkarr/Hellocmake/app/src/main/jni/armeabi-v7a/fileformat.pb.cc:295: error: undefined reference to 'google::protobuf::internal::WireFormatLite::WriteBytesMaybeAliased(int, std::__ndk1::basic_string< char, std::__ndk1::char_traits< char> , std::__ndk1::allocator< char> > const& , google::protobuf::io::CodedOutputStream*)' C:/Users/jkarr/Hellocmake/app/src/main/jni/armeabi-v7a/fileformat.pb.cc:301: error: undefined reference to 'google::protobuf::internal::WireFormatLite::WriteBytesMaybeAliased(int, std::__ndk1::basic_string< char, std::__ndk1::char_traits< char> , std::__ndk1::allocator< char> > const& , google::protobuf::io::CodedOutputStream*)' C:/Users/jkarr/Hellocmake/app/src/main/jni/armeabi-v7a/fileformat.pb.cc:852: error: undefined reference to 'google::protobuf::internal::WireFormatLite::WriteStringMaybeAliased(int, std::__ndk1::basic_string< char, std::__ndk1::char_traits< char> , std::__ndk1::allocator< char> > const& , google::protobuf::io::CodedOutputStream*)' C:/Users/jkarr/Hellocmake/app/src/main/jni/armeabi-v7a/google/include/protobuf/io/coded_stream.h:1232: error: undefined reference to 'google::protobuf::io::CodedOutputStream::VarintSize32Fallback(unsigned int)' clang++.exe: error: linker command failed with exit code 1 (use -v to see invocation) make: ***[C:/Users/jkarr/Hellocmake/app/build/intermediates/ndkBuild/debug/obj/local/armeabi-v7a/libnative-lib.so] Error 1* Try: Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output.* Get more help at https://help.gradle.orgBUILD FAILED in 2s

答案【Android NDK undefined引用google protobuf】我发现导致未定义的引用错误的东西在.h文件中是未定义的。我的印象是我只需要.h文件来使用protobuf库，但我需要附带的.cc文件来定义所述函数。我感谢所有试图提供帮助的人。希望我的经验能够用来帮助别人。

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