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добавление зависимости gRPC в CMakeLists Rocksdb

#cmake #grpc #rocksdb

#cmake #grpc #rocksdb

Вопрос:

Я пытаюсь использовать gRPC непосредственно в исходном коде rocksdb

 LogAndApplyClient log_and_apply_client(grpc::CreateChannel(
      secondary, grpc::InsecureChannelCredentials()));

log_and_apply_client — это в основном класс, который я написал, используемый для выполнения вызовов rpc, и он зависит от кода-заглушки, сгенерированного Protobuf. И я добавляю его непосредственно в исходный код rocksdb.

Чтобы устранить зависимость от grpc, я добавляю зависимость в базу данных rocksdb CMakeLists.txt файл с использованием примера CMakeLists, предоставленного gRPC. Я установил gRPC и protobuf в Ubuntu18.04, и это то, что я добавил в CMakeLists rocksdb. Это в основном находит установку grpc и protobuf

 # This branch assumes that gRPC and all its dependencies are already installed
  # on this system, so they can be located by find_package().

  # Find Protobuf installation
  # Looks for protobuf-config.cmake file installed by Protobuf's cmake installation.
  set(protobuf_MODULE_COMPATIBLE TRUE)
  find_package(Protobuf CONFIG REQUIRED)
  message(STATUS "Using protobuf ${Protobuf_VERSION}")

  set(_PROTOBUF_LIBPROTOBUF protobuf::libprotobuf)
  set(_REFLECTION gRPC::grpc  _reflection)
  if(CMAKE_CROSSCOMPILING)
    find_program(_PROTOBUF_PROTOC protoc)
  else()
    set(_PROTOBUF_PROTOC



lt;TARGET_FILE:protobuf::protoc>)

  endif()


  # Find gRPC installation

  # Looks for gRPCConfig.cmake file installed by gRPC's cmake installation.

  find_package(gRPC CONFIG REQUIRED)

  message(STATUS "Using gRPC ${gRPC_VERSION}")


  set(_GRPC_GRPCPP gRPC::grpc  )

  if(CMAKE_CROSSCOMPILING)

    find_program(_GRPC_CPP_PLUGIN_EXECUTABLE grpc_cpp_plugin)

  else()

    set(_GRPC_CPP_PLUGIN_EXECUTABLE




lt;TARGET_FILE:gRPC::grpc_cpp_plugin>)

  endif()

 

Связывание базы данных rocksdb с grpc, protobuf


 
add_library(${ROCKSDB_STATIC_LIB} STATIC ${SOURCES})
target_link_libraries(${ROCKSDB_STATIC_LIB} PRIVATE
  ${THIRDPARTY_LIBS} ${SYSTEM_LIBS} 
  ${_REFLECTION}
  ${_GRPC_GRPCPP}
  ${_PROTOBUF_LIBPROTOBUF}
  )
 


Rocksdb отлично компилируется без ошибок, но когда я пытаюсь использовать скомпилированную библиотеку rocksdb, она выдает мне кучу неопределенных ссылок.


 mnt/sdb/my_rocksdb/librocksdb.a(version_set.cc.o): In function `__static_initialization_and_destruction_0(int, int)':
/mnt/sdb/my_rocksdb/db/version_set.cc:4325: undefined reference to `grpc::InsecureChannelCredentials()'
/mnt/sdb/my_rocksdb/db/version_set.cc:4324: undefined reference to `grpc::CreateChannel(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> > constamp;, std::shared_ptr<grpc::ChannelCredentials> constamp;)'
/mnt/sdb/my_rocksdb/librocksdb.a(logAndApply.pb.cc.o): In function `logapply::Response::_InternalParse(char const*, google::protobuf::internal::ParseContext*)':
/mnt/sdb/my_rocksdb/rubble/logAndApply/logAndApply.pb.cc:468: undefined reference to `google::protobuf::internal::UnknownFieldParse(unsigned long, google::protobuf::UnknownFieldSet*, char const*, google::protobuf::internal::ParseContext*)'
/mnt/sdb/my_rocksdb/librocksdb.a(logAndApply.pb.cc.o): In function `logapply::Response::_InternalSerialize(unsigned char*, google::protobuf::io::EpsCopyOutputStream*) const':
/mnt/sdb/my_rocksdb/rubble/logAndApply/logAndApply.pb.cc:497: undefined reference to `google::protobuf::UnknownFieldSet::default_instance()'
/mnt/sdb/my_rocksdb/rubble/logAndApply/logAndApply.pb.cc:497: undefined reference to `google::protobuf::internal::WireFormat::InternalSerializeUnknownFieldsToArray(google::protobuf::UnknownFieldSet constamp;, unsigned char*, google::protobuf::io::EpsCopyOutputStream*)'
/mnt/sdb/my_rocksdb/librocksdb.a(logAndApply.pb.cc.o): In function `logapply::Response::ByteSizeLong() const':
/mnt/sdb/my_rocksdb/rubble/logAndApply/logAndApply.pb.cc:519: undefined reference to `google::protobuf::internal::ComputeUnknownFieldsSize(google::protobuf::internal::InternalMetadata constamp;, unsigned long, google::protobuf::internal::CachedSize*)'
/mnt/sdb/my_rocksdb/librocksdb.a(logAndApply.pb.cc.o): In function `logapply::Response::MergeFrom(google::protobuf::Message constamp;)':
/mnt/sdb/my_rocksdb/rubble/logAndApply/logAndApply.pb.cc:534: undefined reference to `google::protobuf::internal::ReflectionOps::Merge(google::protobuf::Message constamp;, google::protobuf::Message*)'
/mnt/sdb/my_rocksdb/librocksdb.a(logAndApply.pb.cc.o): In function `logapply::EditLists_EditList_VersionEdit::_InternalParse(char const*, google::protobuf::internal::ParseContext*)':
/mnt/sdb/my_rocksdb/rubble/logAndApply/logAndApply.pb.cc:705: undefined reference to `google::protobuf::internal::UnknownFieldParse(unsigned long, google::protobuf::UnknownFieldSet*, char const*, google::protobuf::internal::ParseContext*)'
/mnt/sdb/my_rocksdb/librocksdb.a(logAndApply.pb.cc.o): In function `logapply::EditLists_EditList_VersionEdit::_InternalSerialize(unsigned char*, google::protobuf::io::EpsCopyOutputStream*) const':
/mnt/sdb/my_rocksdb/rubble/logAndApply/logAndApply.pb.cc:744: undefined reference to `google::protobuf::UnknownFieldSet::default_instance()'
/mnt/sdb/my_rocksdb/rubble/logAndApply/logAndApply.pb.cc:744: undefined reference to `google::protobuf::internal::WireFormat::InternalSerializeUnknownFieldsToArray(google::protobuf::UnknownFieldSet constamp;, unsigned char*, google::protobuf::io::EpsCopyOutputStream*)'
/mnt/sdb/my_rocksdb/librocksdb.a(logAndApply.pb.cc.o): In function `logapply::EditLists::MergeFrom(google::protobuf::Message constamp;)':
/mnt/sdb/my_rocksdb/rubble/logAndApply/logAndApply.pb.cc:1206: undefined reference to `google::protobuf::internal::ReflectionOps::Merge(google::protobuf::Message constamp;, google::protobuf::Message*)'
/mnt/sdb/my_rocksdb/librocksdb.a(logAndApply.pb.cc.o): In function `logapply::NewFile_FileMetaData_FileDescriptor::_InternalParse(char const*, google::protobuf::internal::ParseContext*)':
/mnt/sdb/my_rocksdb/rubble/logAndApply/logAndApply.pb.cc:1378: undefined reference to `google::protobuf::internal::UnknownFieldParse(unsigned long, google::protobuf::UnknownFieldSet*, char const*, google::protobuf::internal::ParseContext*)'
/root/local/include/google/protobuf/unknown_field_set.h:312: undefined reference to `google::protobuf::UnknownFieldSet::ClearFallback()'
/mnt/sdb/my_rocksdb/librocksdb.a(logAndApply.pb.cc.o): In function `google::protobuf::Message::Message()':
/root/local/include/google/protobuf/message.h:230: undefined reference to `vtable for google::protobuf::Message'
/mnt/sdb/my_rocksdb/librocksdb.a(logAndApply.pb.cc.o): In function `google::protobuf::Message::Message(google::protobuf::Arena*)':
/root/local/include/google/protobuf/message.h:362: undefined reference to `vtable for google::protobuf::Message'
/mnt/sdb/my_rocksdb/librocksdb.a(logAndApply.pb.cc.o): In function `logapply::Response::GetMetadataStatic()':
/mnt/sdb/my_rocksdb/rubble/logAndApply/logAndApply.pb.h:207: undefined reference to `google::protobuf::internal::AssignDescriptors(google::protobuf::internal::DescriptorTable const*, bool)'
/mnt/sdb/my_rocksdb/librocksdb.a(logAndApply.pb.cc.o): In function `logapply::EditLists_EditList_VersionEdit::GetMetadataStatic()':
/mnt/sdb/my_rocksdb/rubble/logAndApply/logAndApply.pb.h:344: undefined reference to `google::protobuf::internal::AssignDescriptors(google::protobuf::internal::DescriptorTable const*, bool)'
/mnt/sdb/my_rocksdb/librocksdb.a(logAndApply.pb.cc.o): In function `logapply::EditLists_EditList::GetMetadataStatic()':
/mnt/sdb/my_rocksdb/rubble/logAndApply/logAndApply.pb.h:510: undefined reference to `google::protobuf::internal::AssignDescriptors(google::protobuf::internal::DescriptorTable const*, bool)'
/mnt/sdb/my_rocksdb/librocksdb.a(logAndApply.pb.cc.o): In function `logapply::EditLists::GetMetadataStatic()':
/mnt/sdb/my_rocksdb/rubble/logAndApply/logAndApply.pb.h:658: undefined reference to `google::protobuf::internal::AssignDescriptors(google::protobuf::internal::DescriptorTable const*, bool)'
/mnt/sdb/my_rocksdb/librocksdb.a(logAndApply.pb.cc.o):(.data.rel.ro._ZTVN8logapply20NewFile_FileMetaDataE[_ZTVN8logapply20NewFile_FileMetaDataE] 0x98): undefined reference to `google::protobuf::Message::SpaceUsedLong() const'
/mnt/sdb/my_rocksdb/librocksdb.a(logAndApply.pb.cc.o):(.data.rel.ro._ZTVN8logapply35NewFile_FileMetaData_FileDescriptorE[_ZTVN8logapply35NewFile_FileMetaData_FileDescriptorE] 0x20): undefined reference to `google::protobuf::Message::GetTypeName[abi:cxx11]() const'
/mnt/sdb/my_rocksdb/librocksdb.a(logAndApply.pb.cc.o):(.data.rel.ro._ZTVN8logapply35NewFile_FileMetaData_FileDescriptorE[_ZTVN8logapply35NewFile_FileMetaData_FileDescriptorE] 0x48): undefined reference to `google::protobuf::Message::InitializationErrorString[abi:cxx11]() const'
/mnt/sdb/my_rocksdb/librocksdb.a(logAndApply.pb.cc.o):(.data.rel.ro._ZTVN8logapply35NewFile_FileMetaData_FileDescriptorE[_ZTVN8logapply35NewFile_FileMetaData_FileDescriptorE] 0x50): undefined reference to `google::protobuf::Message::CheckTypeAndMergeFrom(google::protobuf::MessageLite constamp;)'
/mnt/sdb/my_rocksdb/librocksdb.a(logAndApply.pb.cc.o):(.data.rel.ro._ZTVN8logapply35NewFile_FileMetaData_FileDescriptorE[_ZTVN8logapply35NewFile_FileMetaData_FileDescriptorE] 0x90): undefined reference to `google::protobuf::Message::DiscardUnknownFields()'
(.data.rel.ro._ZTIN8logapply20NewFile_FileMetaDataE[_ZTIN8logapply20NewFile_FileMetaDataE] 0x10): undefined reference to `typeinfo for google::protobuf::Message'
/mnt/sdb/my_rocksdb/librocksdb.a(logAndApply.pb.cc.o):(.data.rel.ro._ZTIN8logapply35NewFile_FileMetaData_FileDescriptorE[_ZTIN8logapply35NewFile_FileMetaData_FileDescriptorE] 0x10): more undefined references to `typeinfo for google::protobuf::Message' follow
collect2: error: ld returned 1 exit status
CMakeFiles/primary_server.dir/build.make:143: recipe for target 'primary_server' failed
make[2]: *** [primary_server] Error 1
CMakeFiles/Makefile2:98: recipe for target 'CMakeFiles/primary_server.dir/all' failed
make[1]: *** [CMakeFiles/primary_server.dir/all] Error 2
Makefile:102: recipe for target 'all' failed
make: *** [all] Error 2
 


Это файл CMakeLists, который я написал для своей клиентской программы, использующей объект библиотеки rocksdb


 # Proto file
get_filename_component(kv_proto "../protos/keyvaluestore.proto" ABSOLUTE)
get_filename_component(kv_proto_path "${kv_proto}" PATH)

# Generated sources
set(kv_proto_srcs "${CMAKE_CURRENT_BINARY_DIR}/keyvaluestore.pb.cc")
set(kv_proto_hdrs "${CMAKE_CURRENT_BINARY_DIR}/keyvaluestore.pb.h")
set(kv_grpc_srcs "${CMAKE_CURRENT_BINARY_DIR}/keyvaluestore.grpc.pb.cc")
set(kv_grpc_hdrs "${CMAKE_CURRENT_BINARY_DIR}/keyvaluestore.grpc.pb.h")
add_custom_command(
      OUTPUT "${kv_proto_srcs}" "${kv_proto_hdrs}" "${kv_grpc_srcs}" "${kv_grpc_hdrs}"
      COMMAND ${_PROTOBUF_PROTOC}
      ARGS --grpc_out "${CMAKE_CURRENT_BINARY_DIR}"
        --cpp_out "${CMAKE_CURRENT_BINARY_DIR}"
        -I "${kv_proto_path}"
        --plugin=protoc-gen-grpc="${_GRPC_CPP_PLUGIN_EXECUTABLE}"
        "${kv_proto}"
      DEPENDS "${kv_proto}")

# Include generated *.pb.h files
include_directories("${CMAKE_CURRENT_BINARY_DIR}")

include_directories(/mnt/sdb/my_rocksdb/include)
link_directories(/mnt/sdb/my_rocksdb)

# kv_grpc_proto
add_library(kv_grpc_proto
  ${kv_grpc_srcs}
  ${kv_grpc_hdrs}
  ${kv_proto_srcs}
  ${kv_proto_hdrs})
target_link_libraries(kv_grpc_proto
  ${_REFLECTION}
  ${_GRPC_GRPCPP}
  ${_PROTOBUF_LIBPROTOBUF}
  )

# Targets greeter_[async_](client|server)
foreach(_target
  kv_store_client
  primary_server
  )
  add_executable(${_target} "${_target}.cc")
  target_link_libraries(${_target}
    kv_grpc_proto
    ${_REFLECTION}
    ${_GRPC_GRPCPP}
    ${_PROTOBUF_LIBPROTOBUF}
    liblog_and_apply_grpc_proto.a
    librocksdb.a
    )
endforeach()
 


Я не совсем знаком с cmake, я думаю, что я не понял это правильно, когда пытался добавить зависимость в исходный код rocksdb, и я действительно застрял на этом, поэтому любые предложения будут оценены!




Комментарии:


1.  Похоже, вы создаете свой проект с    make    помощью утилиты.   Если это верно, то добавьте    VERBOSE=1    опцию при вызове   make    .   Таким образом, он будет печатать все параметры, переданные компоновщику.   Проверьте, что    grpc    и    protobuf    библиотеки входят в число этих опций.  


2.  @Tsyvarev Спасибо за комментарий.   Это то, что я получаю после указания   VERBOSE=1    , похоже, что он не находит библиотеку, но я все еще не уверен, почему и как это исправить  


3.   Building CXX object CMakeFiles/rocksdb.dir/db/version_set.cc.o /usr/bin/c   -DCARES_STATICLIB -DGFLAGS=1 -DGFLAGS_IS_A_DLL=0 -I/mnt/sdb/my_rocksdb -I/mnt/sdb/my_rocksdb/include -I/mnt/sdb/my_rocksdb/third-party/folly -isystem /root/local/include -W -Wextra -Wall -Wno-unused-parameter -Wno-unused-variable -Woverloaded-virtual -Wnon-virtual-dtor -Wno-missing-field-initializers -Wno-strict-aliasing -march=native -Werror -fno-builtin-memcmp -g -DROCKSDB_USE_RTTI -std=gnu  11 -o CMakeFiles/rocksdb.dir/db/version_set.cc.o -c /mnt/sdb/my_rocksdb/db/version_set.cc    


4.  Подождите..   Находит ли это библиотеки?   Мои    protoc    и    grpc    устанавливаются в   /root/local/      В выводе говорится   -isystem /root/local/include    .   Не уверен, найдет ли он библиотеку..  


5.  Нет, это не та командная строка, которую вам нужно проверить.   Вам нужно проверить командную строку     компоновщика    (которая вызывает ошибки «неопределенной ссылки»), а не командную строку     компилятора    .  


Ответ №1:




 linker  Вывод, похоже, не связан  libprotobuf.a  и  libgrpcpp.a 


 [100%] Linking CXX static library librocksdb.a
/usr/local/bin/cmake -P CMakeFiles/rocksdb.dir/cmake_clean_target.cmake
/usr/local/bin/cmake -E cmake_link_script CMakeFiles/rocksdb.dir/link.txt --verbose=1
/usr/bin/ar qc librocksdb.a CMakeFiles/rocksdb.dir/cache/cache.cc.o CMakeFiles/rocksdb.dir/cache/clock_cache.cc.o CMakeFiles/rocksdb.dir/cache/lru_cache.cc.o CMakeFiles/rocksdb.dir/cache/sharded_cache.cc.o CMakeFiles/rocksdb.dir/db/arena_wrapped_db_iter.cc.o CMakeFiles/rocksdb.dir/db/blob/blob_file_addition.cc.o CMakeFiles/rocksdb.dir/db/blob/blob_file_builder.cc.o CMakeFiles/rocksdb.dir/db/blob/blob_file_cache.cc.o CMakeFiles/rocksdb.dir/db/blob/blob_file_garbage.cc.o CMakeFiles/rocksdb.dir/db/blob/blob_file_meta.cc.o CMakeFiles/rocksdb.dir/db/blob/blob_file_reader.cc.o CMakeFiles/rocksdb.dir/db/blob/blob_log_format.cc.o CMakeFiles/rocksdb.dir/db/blob/blob_log_sequential_reader.cc.o CMakeFiles/rocksdb.dir/db/blob/blob_log_writer.cc.o CMakeFiles/rocksdb.dir/db/builder.cc.o CMakeFiles/rocksdb.dir/db/c.cc.o CMakeFiles/rocksdb.dir/db/column_family.cc.o CMakeFiles/rocksdb.dir/db/compacted_db_impl.cc.o CMakeFiles/rocksdb.dir/db/compaction/compaction.cc.o CMakeFiles/rocksdb.dir/db/compaction/compaction_iterator.cc.o CMakeFiles/rocksdb.dir/db/compaction/compaction_picker.cc.o CMakeFiles/rocksdb.dir/db/compaction/compaction_job.cc.o CMakeFiles/rocksdb.dir/db/compaction/compaction_picker_fifo.cc.o CMakeFiles/rocksdb.dir/db/compaction/compaction_picker_level.cc.o CMakeFiles/rocksdb.dir/db/compaction/compaction_picker_universal.cc.o CMakeFiles/rocksdb.dir/db/compaction/sst_partitioner.cc.o CMakeFiles/rocksdb.dir/db/convenience.cc.o CMakeFiles/rocksdb.dir/db/db_filesnapshot.cc.o CMakeFiles/rocksdb.dir/db/db_impl/db_impl.cc.o CMakeFiles/rocksdb.dir/db/db_impl/db_impl_write.cc.o CMakeFiles/rocksdb.dir/db/db_impl/db_impl_compaction_flush.cc.o CMakeFiles/rocksdb.dir/db/db_impl/db_impl_files.cc.o CMakeFiles/rocksdb.dir/db/db_impl/db_impl_open.cc.o CMakeFiles/rocksdb.dir/db/db_impl/db_impl_debug.cc.o CMakeFiles/rocksdb.dir/db/db_impl/db_impl_experimental.cc.o CMakeFiles/rocksdb.dir/db/db_impl/db_impl_readonly.cc.o 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CMakeFiles/build_version.dir/build_version.cc.o
/usr/bin/ranlib librocksdb.a
 


выполнение a  grep  на выходе  grpc  и  protobuf  не дало мне библиотеку… Итак, компоновщику каким-то образом не удается найти библиотеку, что меня смущает, потому что я сделал


 target_link_libraries(${ROCKSDB_STATIC_LIB} PRIVATE
  ${THIRDPARTY_LIBS} ${SYSTEM_LIBS} 
  ${_REFLECTION}
  ${_GRPC_GRPCPP}
  ${_PROTOBUF_LIBPROTOBUF}
  )
 


в базе данных rocksdb  CMakeLists  .




Комментарии:


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