Link error

[Ashar]

Hi,I am using visual C++ Express 2005 edition.While build the C++ project, i got those errors1>Linking...1>LINK : D:/Vembu/StoreGrid/bin/StoreGrid.Net.SP.exe not found or not built by the last incremental link; performing full link1>StartStoreGridServer.obj : error LNK2019: unresolved external symbol "public: void __thiscall TimeBasedRetentionCheckThread::Initialize(void)" (?Initialize@TimeBasedRetentionCheckThread@@QAEXXZ) referenced in function "public: void __thiscall StartStoreGridServer::CallMain(void)" (?CallMain@StartStoreGridServer@@QAEXXZ)1>StartStoreGridServer.obj : error LNK2001: unresolved external symbol "public: virtual void __thiscall TimeBasedRetentionCheckThread::Run(void)" (?Run@TimeBasedRetentionCheckThread@@UAEXXZ)1>ServerBackupObject.obj : error LNK2019: unresolved external symbol "public: void __thiscall VersionBasedRetentionCheckThread::Initialize(int,class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> >,class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> >,class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> >,class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> >,int,bool,bool,long)" (?Initialize@VersionBasedRetentionCheckThread@@QAEXHV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@000H_N1J@Z) referenced in function __catch$?Run@ServerBackupObject@@UAEXXZ$01>ServerBackupObject.obj : error LNK2001: unresolved external symbol "public: virtual void __thiscall VersionBasedRetentionCheckThread::Run(void)" (?Run@VersionBasedRetentionCheckThread@@UAEXXZ)1>VSSApi.obj : error LNK2019: unresolved external symbol "void * __cdecl CreateVSSApiInstance(void)" (?CreateVSSApiInstance@@YAPAXXZ) referenced in function "public: void __thiscall VSSApi::Initialize(class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> >)" (?Initialize@VSSApi@@QAEXV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@@Z)1>VSSApi.obj : error LNK2019: unresolved external symbol "void __cdecl DeleteVSSApiInstance(void *)" (?DeleteVSSApiInstance@@YAXPAX@Z) referenced in function "public: void __thiscall VSSApi::DeInitialize(void)" (?DeInitialize@VSSApi@@QAEXXZ)1>BackupScheduler.obj : error LNK2001: unresolved external symbol _SQLFreeHandle@81>BackupScheduleConfiguration.obj : error LNK2019: unresolved external symbol _SQLFreeHandle@8 referenced in function "private: class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > __thiscall BackupScheduleConfiguration::GetBackupReportDetails(class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> >)" (?GetBackupReportDetails@BackupScheduleConfiguration@@AAE?AV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@V23@@Z)1>DatabaseInfo.obj : error LNK2001: unresolved external symbol _SQLFreeHandle@81>ConnectionObject.obj : error LNK2001: unresolved external symbol _SQLFreeHandle@81>SQLServerLocator.obj : error LNK2001: unresolved external symbol _SQLFreeHandle@81>BackupScheduleConfiguration.obj : error LNK2019: unresolved external symbol _SQLFetch@4 referenced in function "private: class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > __thiscall BackupScheduleConfiguration::GetBackupReportDetails(class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> >)" (?GetBackupReportDetails@BackupScheduleConfiguration@@AAE?AV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@V23@@Z)1>DatabaseInfo.obj : error LNK2001: unresolved external symbol _SQLFetch@41>BackupScheduler.obj : error LNK2001: unresolved external symbol _SQLFetch@41>BackupScheduleConfiguration.obj : error LNK2019: unresolved external symbol _SQLBindCol@24 referenced in function "private: class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > __thiscall BackupScheduleConfiguration::GetBackupReportDetails(class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> >)" (?GetBackupReportDetails@BackupScheduleConfiguration@@AAE?AV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@V23@@Z)1>DatabaseInfo.obj : error LNK2001: unresolved external symbol _SQLBindCol@241>BackupScheduler.obj : error LNK2001: unresolved external symbol _SQLBindCol@241>BackupScheduleConfiguration.obj : error LNK2019: unresolved external symbol _SQLNumResultCols@8 referenced in function "private: class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > __thiscall BackupScheduleConfiguration::GetBackupReportDetails(class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> >)" (?GetBackupReportDetails@BackupScheduleConfiguration@@AAE?AV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@V23@@Z)1>DatabaseInfo.obj : error LNK2001: unresolved external symbol _SQLNumResultCols@81>BackupScheduler.obj : error LNK2001: unresolved external symbol _SQLNumResultCols@81>BackupScheduleConfiguration.obj : error LNK2019: unresolved external symbol _SQLExecDirect@12 referenced in function "private: class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > __thiscall BackupScheduleConfiguration::GetBackupReportDetails(class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> >)" (?GetBackupReportDetails@BackupScheduleConfiguration@@AAE?AV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@V23@@Z)1>DatabaseInfo.obj : error LNK2001: unresolved external symbol _SQLExecDirect@121>BackupScheduler.obj : error LNK2001: unresolved external symbol _SQLExecDirect@121>BackupScheduler.obj : error LNK2019: unresolved external symbol _SQLAllocHandle@12 referenced in function "public: void __thiscall BackupScheduler::UpdateBackupReport(void)" (?UpdateBackupReport@BackupScheduler@@QAEXXZ)1>BackupScheduleConfiguration.obj : error LNK2001: unresolved external symbol _SQLAllocHandle@121>DatabaseInfo.obj : error LNK2001: unresolved external symbol _SQLAllocHandle@121>ConnectionObject.obj : error LNK2001: unresolved external symbol _SQLAllocHandle@121>SQLServerLocator.obj : error LNK2001: unresolved external symbol _SQLAllocHandle@121>BackupScheduleConfiguration.obj : error LNK2019: unresolved external symbol _SQLGetDiagRec@32 referenced in function "public: class std::vector<class DBScheduleDetails,class std::allocator<class DBScheduleDetails> > __thiscall BackupScheduleConfiguration::GetBackupScheduleDetails(int,int)" (?GetBackupScheduleDetails@BackupScheduleConfiguration@@QAE?AV?$vector@VDBScheduleDetails@@V?$allocator@VDBScheduleDetails@@@std@@@std@@HH@Z)1>ConnectionObject.obj : error LNK2001: unresolved external symbol _SQLGetDiagRec@321>ConnectionObject.obj : error LNK2019: unresolved external symbol _SQLDisconnect@4 referenced in function "public: int __thiscall ConnectionObject::TestConnection(void)" (?TestConnection@ConnectionObject@@QAEHXZ)1>SQLServerLocator.obj : error LNK2001: unresolved external symbol _SQLDisconnect@41>ConnectionObject.obj : error LNK2019: unresolved external symbol _SQLDriverConnect@32 referenced in function "public: int __thiscall ConnectionObject::TestConnection(void)" (?TestConnection@ConnectionObject@@QAEHXZ)1>ConnectionObject.obj : error LNK2019: unresolved external symbol _SQLSetEnvAttr@16 referenced in function "public: int __thiscall ConnectionObject::TestConnection(void)" (?TestConnection@ConnectionObject@@QAEHXZ)1>SQLServerLocator.obj : error LNK2001: unresolved external symbol _SQLSetEnvAttr@161>ConnectionObject.obj : error LNK2019: unresolved external symbol _SQLGetDiagField@28 referenced in function "public: class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > __thiscall ConnectionObject::GetSqlError(void *,class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> >,long,int)" (?GetSqlError@ConnectionObject@@QAE?AV?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@PAXV23@JH@Z)1>SQLServerLocator.obj : error LNK2019: unresolved external symbol _SQLBrowseConnect@24 referenced in function "public: class std::vector<class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> >,class std::allocator<class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > > > __thiscall SQLServerLocator::GetSQLServer(class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> >)" (?GetSQLServer@SQLServerLocator@@QAE?AV?$vector@V?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@V?$allocator@V?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@@2@@std@@V?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@3@@Z)1>SQLServerLocator.obj : error LNK2019: unresolved external symbol _SQLSetConnectAttr@16 referenced in function "public: class std::vector<class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> >,class std::allocator<class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> > > > __thiscall SQLServerLocator::GetSQLServer(class std::basic_string<char,struct std::char_traits<char>,class std::allocator<char> >)" (?GetSQLServer@SQLServerLocator@@QAE?AV?$vector@V?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@V?$allocator@V?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@std@@@2@@std@@V?$basic_string@DU?$char_traits@D@std@@V?$allocator@D@2@@3@@Z)1>D:/Vembu/StoreGrid/bin/StoreGrid.Net.SP.exe : fatal error LNK1120: 19 unresolved externals1>Creating browse information file...1>Microsoft Browse Information Maintenance Utility Version 8.00.507271>Copyright © Microsoft Corporation. All rights reserved.1>Build log was saved at "file://d:\WorkingProjects\StoreGrid2.3\StoreGrid\Build\Windows\DotNet\SPEditionDeb\BuildLog.htm"1>StoreGrid_Head - 39 error(s), 0 warning(s)========== Build: 0 succeeded, 1 failed, 3 up-to-date, 0 skipped ==========how to solve that. Please explain me.Thanks.

[justsomeguy]

I think this is beyond the scope of this forum. It looks like you are not including references to libraries you are using, but that's about all I can say. All of the unresolved external symbol errors indicate that the code is using a function that it could not find defined anywhere.