Hi there, I have the same problem. Link C++ library built from 1.0.0 tag by Visual Studio project, show unresolved reference error to Channel and Server class
After some research, I believe the problem is from conflicted name. Project grpc++ have both channel.c and channel.cc source file (in different directory), both compiled to channel.lib (in the same directory). so one library overwrite another. Other conflicted names are byte_buffer.c/ byte_buffer.cc, completion_queue.c/ completion_queue.cc, server.c/ server.cc John Coffey於 2016年8月22日星期一 UTC+8上午11時19分30秒寫道： > > Nicolas, I was able to work around the problem by simply switching to the > master branch, looks like something is a bit off with the 1.0.0 tag release > > John > > On Sunday, August 21, 2016 at 3:04:27 PM UTC-4, John Coffey wrote: >> >> Nicolas, that was indeed the case when I switched from the 0_15_1 to the >> v1.0.0 branch. However today I changed to the 1.0.0 tag and the problems >> are cropping up once more and this time despite clean builds I cannot seem >> to resolve the linker issues. I did a build from scratch and I get the >> following missing symbol linker errors. I would have thought that >> grpc++.lib was the guilty library bit that does not look to be the case. >> Perhaps you can spot the problem. >> >> John >> >> 1>main.obj : warning LNK4075: ignoring '/EDITANDCONTINUE' due to >> '/OPT:LBR' specification >> 1>ca.lib(CADaemon.obj) : error LNK2019: unresolved external symbol >> "public: virtual __cdecl grpc::Server::~Server(void)" >> (??1Server@grpc@@UEAA@XZ) referenced in function "public: virtual void * >> __cdecl grpc::Server::`scalar deleting destructor'(unsigned int)" >> (??_GServer@grpc@@UEAAPEAXI@Z) >> 1>grpc++.lib(server_builder.obj) : error LNK2001: unresolved external >> symbol "public: virtual __cdecl grpc::Server::~Server(void)" >> (??1Server@grpc@@UEAA@XZ) >> 1>ca.lib(CADaemon.obj) : error LNK2019: unresolved external symbol >> "public: virtual void __cdecl grpc::Server::Wait(void)" >> (?Wait@Server@grpc@@UEAAXXZ) referenced in function "private: void __cdecl >> CADaemon::grpcService(class std::basic_string<char,struct >> std::char_traits<char>,class std::allocator<char> > const &)" >> (?grpcService@CADaemon@@AEAAXAEBV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@@Z) >> 1>grpc++.lib(server_builder.obj) : error LNK2019: unresolved external >> symbol "private: __cdecl grpc::Server::Server(class >> grpc::ThreadPoolInterface *,bool,int,class grpc::ChannelArguments *)" >> (??0Server@grpc@@AEAA@PEAVThreadPoolInterface@1@_NHPEAVChannelArguments@1@@Z) >> >> referenced in function "public: class std::unique_ptr<class >> grpc::Server,struct std::default_delete<class grpc::Server> > __cdecl >> grpc::ServerBuilder::BuildAndStart(void)" >> (?BuildAndStart@ServerBuilder@grpc@@QEAA?AV?$unique_ptr@VServer@grpc@@U?$default_delete@VServer@grpc@@@std@@@std@@XZ) >> 1>grpc++.lib(server_builder.obj) : error LNK2019: unresolved external >> symbol "private: virtual bool __cdecl grpc::Server::RegisterService(class >> std::basic_string<char,struct std::char_traits<char>,class >> std::allocator<char> > const *,class grpc::Service *)" >> (?RegisterService@Server@grpc@@EEAA_NPEBV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@PEAVService@2@@Z) >> >> referenced in function "public: class std::unique_ptr<class >> grpc::Server,struct std::default_delete<class grpc::Server> > __cdecl >> grpc::ServerBuilder::BuildAndStart(void)" >> (?BuildAndStart@ServerBuilder@grpc@@QEAA?AV?$unique_ptr@VServer@grpc@@U?$default_delete@VServer@grpc@@@std@@@std@@XZ) >> 1>grpc++.lib(server_builder.obj) : error LNK2019: unresolved external >> symbol "private: virtual void __cdecl >> grpc::Server::RegisterAsyncGenericService(class grpc::AsyncGenericService >> *)" >> (?RegisterAsyncGenericService@Server@grpc@@EEAAXPEAVAsyncGenericService@2@@Z) >> >> referenced in function "public: class std::unique_ptr<class >> grpc::Server,struct std::default_delete<class grpc::Server> > __cdecl >> grpc::ServerBuilder::BuildAndStart(void)" >> (?BuildAndStart@ServerBuilder@grpc@@QEAA?AV?$unique_ptr@VServer@grpc@@U?$default_delete@VServer@grpc@@@std@@@std@@XZ) >> 1>grpc++.lib(server_builder.obj) : error LNK2019: unresolved external >> symbol "private: virtual int __cdecl grpc::Server::AddListeningPort(class >> std::basic_string<char,struct std::char_traits<char>,class >> std::allocator<char> > const &,class grpc::ServerCredentials *)" >> (?AddListeningPort@Server@grpc@@EEAAHAEBV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@PEAVServerCredentials@2@@Z) >> >> referenced in function "public: class std::unique_ptr<class >> grpc::Server,struct std::default_delete<class grpc::Server> > __cdecl >> grpc::ServerBuilder::BuildAndStart(void)" >> (?BuildAndStart@ServerBuilder@grpc@@QEAA?AV?$unique_ptr@VServer@grpc@@U?$default_delete@VServer@grpc@@@std@@@std@@XZ) >> 1>grpc++.lib(server_builder.obj) : error LNK2019: unresolved external >> symbol "private: virtual bool __cdecl grpc::Server::Start(class >> grpc::ServerCompletionQueue * *,unsigned __int64)" >> (?Start@Server@grpc@@EEAA_NPEAPEAVServerCompletionQueue@2@_K@Z) referenced >> in function "public: class std::unique_ptr<class grpc::Server,struct >> std::default_delete<class grpc::Server> > __cdecl >> grpc::ServerBuilder::BuildAndStart(void)" >> (?BuildAndStart@ServerBuilder@grpc@@QEAA?AV?$unique_ptr@VServer@grpc@@U?$default_delete@VServer@grpc@@@std@@@std@@XZ) >> 1>grpc++.lib(server_builder.obj) : error LNK2019: unresolved external >> symbol "private: class grpc::ServerInitializer * __cdecl >> grpc::Server::initializer(void)" >> (?initializer@Server@grpc@@AEAAPEAVServerInitializer@2@XZ) referenced in >> function "public: class std::unique_ptr<class grpc::Server,struct >> std::default_delete<class grpc::Server> > __cdecl >> grpc::ServerBuilder::BuildAndStart(void)" >> (?BuildAndStart@ServerBuilder@grpc@@QEAA?AV?$unique_ptr@VServer@grpc@@U?$default_delete@VServer@grpc@@@std@@@std@@XZ) >> 1>grpc++.lib(create_channel_internal.obj) : error LNK2019: unresolved >> external symbol "public: virtual __cdecl grpc::Channel::~Channel(void)" >> (??1Channel@grpc@@UEAA@XZ) referenced in function "public: virtual void * >> __cdecl grpc::Channel::`scalar deleting destructor'(unsigned int)" >> (??_GChannel@grpc@@UEAAPEAXI@Z) >> 1>grpc++.lib(create_channel_internal.obj) : error LNK2019: unresolved >> external symbol "private: __cdecl grpc::Channel::Channel(class >> std::basic_string<char,struct std::char_traits<char>,class >> std::allocator<char> > const &,struct grpc_channel *)" >> (??0Channel@grpc@@AEAA@AEBV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@PEAUgrpc_channel@@@Z) >> >> referenced in function "class std::shared_ptr<class grpc::Channel> __cdecl >> grpc::CreateChannelInternal(class std::basic_string<char,struct >> std::char_traits<char>,class std::allocator<char> > const &,struct >> grpc_channel *)" >> (?CreateChannelInternal@grpc@@YA?AV?$shared_ptr@VChannel@grpc@@@std@@AEBV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@3@PEAUgrpc_channel@@@Z) >> 1>C:\Users\johnc\main\dlmu\cadaemon-0339.1\win32\cadaemon\x64\Debug\cadaemon.exe >> >> : fatal error LNK1120: 10 unresolved externals >> >> >> >> On Tuesday, July 12, 2016 at 7:02:45 PM UTC-4, Nicolas Noble wrote: >>> >>> Not really - these are fairly standard symbols, and shouldn't go >>> missing. I can't help but notice that you are building from an existing >>> build though. Did you, well, try cleaning all and rebuilding all ? If their >>> signature changed between the builds, and your VS didn't pick up the change >>> and rebuild the necessary parts, that'd do it. >>> >>> On Monday, July 11, 2016 at 12:47:33 PM UTC-7, John Coffey wrote: >>>> >>>> I'm getting the following linker errors recently (master branch) on >>>> windows, I do not get these in release-0_15_1. I wonder if anyone could >>>> shed light on what the source of this error might be. I suspect that it >>>> has >>>> something to do with the libraries that I am linking with >>>> post release-0_15_1 (I did not change these but I did notice that a new >>>> grpc++reflection.lib was added. >>>> >>>> I am linking to the following grpc/protocol buffer libraries >>>> >>>> libprotobufd.lib >>>> gpr.lib >>>> grpc.lib >>>> grpc_unsecure.lib >>>> grpc++.lib >>>> grpc++_unsecure.lib >>>> z.lib >>>> >>>> Any ideas >>>> >>>> John >>>> >>>> These are the linker errors on in my client >>>> >>>> 1> LINK : C:\main\dlmu\cacli-0339.1\win32\cacli\x64\Debug\cacli.exe >>>> not found or not built by the last incremental link; performing full link >>>> 1>grpc++_unsecure.lib(insecure_credentials.obj) : error LNK2019: >>>> unresolved external symbol "public: __cdecl >>>> grpc::ChannelCredentials::ChannelCredentials(void)" >>>> (??0ChannelCredentials@grpc@@QEAA@XZ) referenced in function "public: >>>> __cdecl grpc::`anonymous >>>> namespace'::InsecureChannelCredentialsImpl::InsecureChannelCredentialsImpl(void)" >>>> >>>> (??0InsecureChannelCredentialsImpl@?A0x568c5687@grpc@@QEAA@XZ) >>>> 1>grpc++_unsecure.lib(insecure_credentials.obj) : error LNK2019: >>>> unresolved external symbol "public: virtual __cdecl >>>> grpc::ChannelCredentials::~ChannelCredentials(void)" >>>> (??1ChannelCredentials@grpc@@UEAA@XZ) referenced in function "public: >>>> virtual __cdecl grpc::`anonymous >>>> namespace'::InsecureChannelCredentialsImpl::~InsecureChannelCredentialsImpl(void)" >>>> >>>> (??1InsecureChannelCredentialsImpl@?A0x568c5687@grpc@@UEAA@XZ) >>>> 1>grpc++_unsecure.lib(create_channel_internal.obj) : error LNK2019: >>>> unresolved external symbol "public: virtual __cdecl >>>> grpc::Channel::~Channel(void)" (??1Channel@grpc@@UEAA@XZ) referenced in >>>> function "public: virtual void * __cdecl grpc::Channel::`scalar deleting >>>> destructor'(unsigned int)" (??_GChannel@grpc@@UEAAPEAXI@Z) >>>> 1>grpc++_unsecure.lib(create_channel_internal.obj) : error LNK2019: >>>> unresolved external symbol "private: __cdecl grpc::Channel::Channel(class >>>> std::basic_string<char,struct std::char_traits<char>,class >>>> std::allocator<char> > const &,struct grpc_channel *)" >>>> (??0Channel@grpc@@AEAA@AEBV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@PEAUgrpc_channel@@@Z) >>>> >>>> referenced in function "class std::shared_ptr<class grpc::Channel> __cdecl >>>> grpc::CreateChannelInternal(class std::basic_string<char,struct >>>> std::char_traits<char>,class std::allocator<char> > const &,struct >>>> grpc_channel *)" >>>> (?CreateChannelInternal@grpc@@YA?AV?$shared_ptr@VChannel@grpc@@@std@@AEBV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@3@PEAUgrpc_channel@@@Z) >>>> 1>C:\main\dlmu\cacli-0339.1\win32\cacli\x64\Debug\cacli.exe : fatal >>>> error LNK1120: 4 unresolved externals >>>> >>>> >>>> >>>> These are the linker errors on in my server >>>> >>>> 1>------ Build started: Project: cadaemon, Configuration: Debug x64 >>>> ------ >>>> 1>main.obj : warning LNK4075: ignoring '/EDITANDCONTINUE' due to >>>> '/OPT:LBR' specification >>>> 1>ca.lib(CADaemon.obj) : error LNK2019: unresolved external symbol >>>> "public: virtual __cdecl grpc::Server::~Server(void)" >>>> (??1Server@grpc@@UEAA@XZ) referenced in function "public: virtual void * >>>> __cdecl grpc::Server::`scalar deleting destructor'(unsigned int)" >>>> (??_GServer@grpc@@UEAAPEAXI@Z) >>>> 1>grpc++.lib(server_builder.obj) : error LNK2001: unresolved external >>>> symbol "public: virtual __cdecl grpc::Server::~Server(void)" >>>> (??1Server@grpc@@UEAA@XZ) >>>> 1>ca.lib(CADaemon.obj) : error LNK2019: unresolved external symbol >>>> "public: virtual void __cdecl grpc::Server::Wait(void)" >>>> (?Wait@Server@grpc@@UEAAXXZ) referenced in function "private: void __cdecl >>>> CADaemon::grpcService(class std::basic_string<char,struct >>>> std::char_traits<char>,class std::allocator<char> > const &)" >>>> (?grpcService@CADaemon@@AEAAXAEBV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@@Z) >>>> 1>grpc++.lib(insecure_credentials.obj) : error LNK2019: unresolved >>>> external symbol "public: __cdecl >>>> grpc::ChannelCredentials::ChannelCredentials(void)" >>>> (??0ChannelCredentials@grpc@@QEAA@XZ) referenced in function "public: >>>> __cdecl grpc::`anonymous >>>> namespace'::InsecureChannelCredentialsImpl::InsecureChannelCredentialsImpl(void)" >>>> >>>> (??0InsecureChannelCredentialsImpl@?A0x568c5687@grpc@@QEAA@XZ) >>>> 1>grpc++.lib(insecure_credentials.obj) : error LNK2019: unresolved >>>> external symbol "public: virtual __cdecl >>>> grpc::ChannelCredentials::~ChannelCredentials(void)" >>>> (??1ChannelCredentials@grpc@@UEAA@XZ) referenced in function "public: >>>> virtual __cdecl grpc::`anonymous >>>> namespace'::InsecureChannelCredentialsImpl::~InsecureChannelCredentialsImpl(void)" >>>> >>>> (??1InsecureChannelCredentialsImpl@?A0x568c5687@grpc@@UEAA@XZ) >>>> 1>grpc++.lib(server_builder.obj) : error LNK2019: unresolved external >>>> symbol "private: __cdecl grpc::Server::Server(class >>>> grpc::ThreadPoolInterface *,bool,int,class grpc::ChannelArguments *)" >>>> (??0Server@grpc@@AEAA@PEAVThreadPoolInterface@1@_NHPEAVChannelArguments@1@@Z) >>>> >>>> referenced in function "public: class std::unique_ptr<class >>>> grpc::Server,struct std::default_delete<class grpc::Server> > __cdecl >>>> grpc::ServerBuilder::BuildAndStart(void)" >>>> (?BuildAndStart@ServerBuilder@grpc@@QEAA?AV?$unique_ptr@VServer@grpc@@U?$default_delete@VServer@grpc@@@std@@@std@@XZ) >>>> 1>grpc++.lib(server_builder.obj) : error LNK2019: unresolved external >>>> symbol "private: virtual bool __cdecl grpc::Server::RegisterService(class >>>> std::basic_string<char,struct std::char_traits<char>,class >>>> std::allocator<char> > const *,class grpc::Service *)" >>>> (?RegisterService@Server@grpc@@EEAA_NPEBV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@PEAVService@2@@Z) >>>> >>>> referenced in function "public: class std::unique_ptr<class >>>> grpc::Server,struct std::default_delete<class grpc::Server> > __cdecl >>>> grpc::ServerBuilder::BuildAndStart(void)" >>>> (?BuildAndStart@ServerBuilder@grpc@@QEAA?AV?$unique_ptr@VServer@grpc@@U?$default_delete@VServer@grpc@@@std@@@std@@XZ) >>>> 1>grpc++.lib(server_builder.obj) : error LNK2019: unresolved external >>>> symbol "private: virtual void __cdecl >>>> grpc::Server::RegisterAsyncGenericService(class grpc::AsyncGenericService >>>> *)" >>>> (?RegisterAsyncGenericService@Server@grpc@@EEAAXPEAVAsyncGenericService@2@@Z) >>>> >>>> referenced in function "public: class std::unique_ptr<class >>>> grpc::Server,struct std::default_delete<class grpc::Server> > __cdecl >>>> grpc::ServerBuilder::BuildAndStart(void)" >>>> (?BuildAndStart@ServerBuilder@grpc@@QEAA?AV?$unique_ptr@VServer@grpc@@U?$default_delete@VServer@grpc@@@std@@@std@@XZ) >>>> 1>grpc++.lib(server_builder.obj) : error LNK2019: unresolved external >>>> symbol "private: virtual int __cdecl grpc::Server::AddListeningPort(class >>>> std::basic_string<char,struct std::char_traits<char>,class >>>> std::allocator<char> > const &,class grpc::ServerCredentials *)" >>>> (?AddListeningPort@Server@grpc@@EEAAHAEBV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@PEAVServerCredentials@2@@Z) >>>> >>>> referenced in function "public: class std::unique_ptr<class >>>> grpc::Server,struct std::default_delete<class grpc::Server> > __cdecl >>>> grpc::ServerBuilder::BuildAndStart(void)" >>>> (?BuildAndStart@ServerBuilder@grpc@@QEAA?AV?$unique_ptr@VServer@grpc@@U?$default_delete@VServer@grpc@@@std@@@std@@XZ) >>>> 1>grpc++.lib(server_builder.obj) : error LNK2019: unresolved external >>>> symbol "private: virtual bool __cdecl grpc::Server::Start(class >>>> grpc::ServerCompletionQueue * *,unsigned __int64)" >>>> (?Start@Server@grpc@@EEAA_NPEAPEAVServerCompletionQueue@2@_K@Z) referenced >>>> in function "public: class std::unique_ptr<class grpc::Server,struct >>>> std::default_delete<class grpc::Server> > __cdecl >>>> grpc::ServerBuilder::BuildAndStart(void)" >>>> (?BuildAndStart@ServerBuilder@grpc@@QEAA?AV?$unique_ptr@VServer@grpc@@U?$default_delete@VServer@grpc@@@std@@@std@@XZ) >>>> 1>grpc++.lib(server_builder.obj) : error LNK2019: unresolved external >>>> symbol "private: class grpc::ServerInitializer * __cdecl >>>> grpc::Server::initializer(void)" >>>> (?initializer@Server@grpc@@AEAAPEAVServerInitializer@2@XZ) referenced in >>>> function "public: class std::unique_ptr<class grpc::Server,struct >>>> std::default_delete<class grpc::Server> > __cdecl >>>> grpc::ServerBuilder::BuildAndStart(void)" >>>> (?BuildAndStart@ServerBuilder@grpc@@QEAA?AV?$unique_ptr@VServer@grpc@@U?$default_delete@VServer@grpc@@@std@@@std@@XZ) >>>> 1>grpc++.lib(create_channel_internal.obj) : error LNK2019: unresolved >>>> external symbol "public: virtual __cdecl grpc::Channel::~Channel(void)" >>>> (??1Channel@grpc@@UEAA@XZ) referenced in function "public: virtual void * >>>> __cdecl grpc::Channel::`scalar deleting destructor'(unsigned int)" >>>> (??_GChannel@grpc@@UEAAPEAXI@Z) >>>> 1>grpc++.lib(create_channel_internal.obj) : error LNK2019: unresolved >>>> external symbol "private: __cdecl grpc::Channel::Channel(class >>>> std::basic_string<char,struct std::char_traits<char>,class >>>> std::allocator<char> > const &,struct grpc_channel *)" >>>> (??0Channel@grpc@@AEAA@AEBV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@PEAUgrpc_channel@@@Z) >>>> >>>> referenced in function "class std::shared_ptr<class grpc::Channel> __cdecl >>>> grpc::CreateChannelInternal(class std::basic_string<char,struct >>>> std::char_traits<char>,class std::allocator<char> > const &,struct >>>> grpc_channel *)" >>>> (?CreateChannelInternal@grpc@@YA?AV?$shared_ptr@VChannel@grpc@@@std@@AEBV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@3@PEAUgrpc_channel@@@Z) >>>> 1>C:\main\dlmu\cadaemon-0339.1\win32\cadaemon\x64\Debug\cadaemon.exe : >>>> fatal error LNK1120: 12 unresolved externals >>>> ========== Build: 0 succeeded, 1 failed, 3 up-to-date, 0 skipped >>>> ========== >>>> >>>> -- You received this message because you are subscribed to the Google Groups "grpc.io" group. 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