Error Lnk2019 Unresolved External Symbol _errno
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Development > Visual C++ Question 0 Sign c++ error lnk2019 unresolved external symbol in to vote hi,i've got a linker error :(my project is
Error Lnk2019 Unresolved External Symbol Public
/MTDadditionnal dependency " libcp.lib"------ Build started: Project: romustrike, Configuration: Debug Win32 ------Linking...Searching libraries Searching C:\Program Files\Microsoft DirectX SDK error lnk2019 unresolved external symbol winmain@16 referenced in function ___tmaincrtstartup (December 2006)\Lib\x86\Dxerr8.lib: Searching C:\Program Files\Microsoft DirectX SDK (December 2006)\Lib\x86\dplayx.lib: Searching C:\Program Files\Microsoft DirectX SDK (December 2006)\Lib\x86\dxguid.lib: Searching C:\Program Files\Microsoft Platform SDK\Lib\winmm.lib: Searching C:\Program Files\Microsoft Platform SDK\Lib\wininet.lib: Searching C:\Program Files\Microsoft DirectX SDK (December 2006)\Lib\x86\dsound.lib: Searching C:\Program Files\Microsoft Platform SDK\Lib\user32.lib: error lnk2019 unresolved external symbol visual studio 2010 Searching C:\Program Files\Microsoft Visual Studio 8\VC\lib\kernel32.lib: Searching C:\Program Files\Microsoft Visual Studio 8\VC\lib\comsuppwd.lib: Searching C:\Program Files\Microsoft Platform SDK\Lib\Strmiids.lib: Searching C:\Program Files\Microsoft Platform SDK\Lib\opengl32.lib: Searching C:\Program Files\Microsoft Platform SDK\Lib\glu32.lib: Searching C:\Program Files\Microsoft Platform SDK\Lib\glaux.lib: Searching C:\Program Files\Microsoft Platform SDK\Lib\Quartz.lib: Searching C:\Program Files\Microsoft Platform SDK\Lib\gdi32.lib: Searching C:\Program Files\Microsoft Platform SDK\Lib\libcp.lib: Searching C:\Program Files\Microsoft Platform SDK\Lib\winspool.lib: Searching C:\Program Files\Microsoft Platform SDK\Lib\comdlg32.lib: Searching C:\Program Files\Microsoft Platform SDK\Lib\advapi32.lib: Searching C:\Program Files\Microsoft Platform SDK\Lib\shell32.lib: Searching C:\Program Files\Microsoft Platform SDK\Lib\ole32.lib: Searching C:\Program Files\Microsoft Platform SDK\Lib\oleaut32.lib: Searching C:\Program Files\Microsoft Visual Studio 8\VC\lib\uuid.lib: Searching C:\Program Files\Microsoft Platform SDK\Lib\odbc32.lib: Searching C:\Program Files\Microsoft Platform SDK\Lib\odbccp32.lib: Searching C:\Program Files\Microsoft Visual Studio 8\VC\lib\libcpmtd.lib: Searching C:\Program Files\Microsoft Visual Studio 8\VC\lib\LIBCMTD.lib: Searching C:\Program Files\Microsoft Visual Studi
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Error Lnk2019 Unresolved External Symbol Public __thiscall Referenced In Function _main
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Error Lnk2019 Unresolved External Symbol Main Referenced In Function __tmaincrtstartup
Join the Stack Overflow Community Stack Overflow is a community of 4.7 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up Error 18 error https://social.msdn.microsoft.com/Forums/vstudio/en-US/ac44332c-12a9-4e46-a929-be641fdc7325/link-error-errno?forum=vcgeneral LNK2019: unresolved external symbol _error referenced in function _main up vote 0 down vote favorite i added this lines to my code and i have this errors: Error 18 error LNK2019: unresolved external symbol _error referenced in function _main Error 17 error LNK2019: unresolved external symbol _bzero referenced in function _main Error 19 error LNK1120: 2 unresolved externals My code snippet is- else if (strcmp(text, http://stackoverflow.com/questions/25290431/error18-error-lnk2019-unresolved-external-symbol-error-referenced-in-function "004") == 0) { i = 0; menuCheck = 1; puts("Please enter your folder."); gets(text); strcpy(folder, COM_MSG); strcat(folder, "004"); strcat(folder, text); puts("Please enter your folder for saving."); gets(fr_name); if ((temp = send(sock, folder, sizeof(folder), 0)) == SOCKET_ERROR) { printf("Error sending connection request to the server, error code: %d\n", WSAGetLastError()); } /* Receive File from Server */ printf("[Client] Receiveing file from Server and saving it as final.txt..."); FILE *fr = fopen(fr_name, "a"); if (fr == NULL) printf("File %s Cannot be opened.\n", fr_name); else { bzero(revbuf, 512); int fr_block_sz = 0; while ((fr_block_sz = recv(sock, revbuf, 512, 0)) > 0) { int write_sz = fwrite(revbuf, sizeof(char), fr_block_sz, fr); if (write_sz < fr_block_sz) { error("File write failed.\n"); } bzero(revbuf, 512); if (fr_block_sz == 0 || fr_block_sz != 512) { break; } } if (fr_block_sz < 0) { if (errno == EAGAIN) { printf("recv() timed out.\n"); } else { fprintf(stderr, "recv() failed due to errno = %d\n", errno); } } printf("Ok received from server!\n"); } } what to do? thank you ! nir :) c share|improve this question edited Aug 13 '14 at 15:42 Sathish 2,8601823 asked Aug 13 '14 at 15:38 Nir 1517
here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this site About Us Learn more about Stack Overflow the company Business http://stackoverflow.com/questions/849238/how-can-i-resolve-error-lnk2019-unresolved-external-symbol Learn more about hiring developers or posting ads with us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 4.7 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up How can I resolve “error LNK2019: unresolved external symbol”? [duplicate] up vote 9 down vote favorite 3 This question already has an answer here: error lnk2019 What is an undefined reference/unresolved external symbol error and how do I fix it? 25 answers I've got this MFC application I'm working on that needs to have an embedded database. So I went hunting for a slick, fast "embeddable" database for it and stumbled accross SQLite. I created a DB with it, and I created a static library project with Visual Studio 2008. the library project will be used in another main project. In the error lnk2019 unresolved library project, I created a class DBClass with a method AddFeedToDB(CFeed f). The library project uses the .lib file from codeproject (cppsqlite3.lib). When compiling the static library, no error is detected, but when I try to use the library project file in the main project, I get these type of errors: error LNK2019: unresolved external symbol "public:void __thiscall CppSQLite3DB::close(void)" (?close@CppSQLite3DB@@QAEXXZ referenced in function "public: int __thiscall CTalkingFeedsDB::AddFeedToDB(class CFeed,char const*)" (? AddFeedToDB@CTalkingFeedsDB@@QAEHVCFeed@@PDB@Z What am I missing? c++ visual-c++ linker static-libraries share|improve this question edited Sep 29 '11 at 16:00 Jason Plank 2,12242338 asked May 11 '09 at 17:51 Attilah 5,77024106168 marked as duplicate by PlasmaHH, lpappc++ Users with the c++ badge can single-handedly close c++ questions as duplicates and reopen them as needed. Jun 25 '14 at 1:02 This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question. add a comment| 6 Answers 6 active oldest votes up vote 8 down vote accepted It happened to me more than once that I thought symbol XXX (i.e. ?close@CppSQLite3DB@@QAEXXZ) was in the import lib, while the actual symbol was __impXXX (i.e. __imp?close@CppSQLite3DB@@QAEXXZ). The reason for the linker error is then to be found in the compilation step: the compiler will generate the ?close@CppSQLite3DB@@QAEXXZ symbol to be imported, where it should generate __imp?clo