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Questions tagged [lnk2019]

LNK2019 is a common MSVC linker error indicating that the linker was unable to find a required external symbol in any compilation unit. Check the SO post on common errors and their resolution.

LNK2019 is a common MSVC linker error indicating that the linker was unable to find a required external symbol in any compilation unit. A possible and common cause of the error is a symbol that is declared but never defined.

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C++: error LNK2019: unresolved external symbol referenced in function _main

I have some code on C++. Bird.h class Bird { std::string s; static int i; public: Bird(); ~Bird(); friend std::ostream& operator<<(std::ostream& os, Bird& b); }; Bird.cpp #include #include #include…
imladris
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lnk2019 visual studio error

I am trying to make a simple UDP socket class to do some talking between a c++ program and a java program so I'm trying to make a socket class that handles all the UDP transmission but I can't get the program to compile because I get about 8 lnk2019…
Brendan Russo
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Qt LNK2019 Error with basic Qt5 application

I am trying to follow a tutorial online and learn Qt5 with QtCreator 2.6.1 However, I went and attempted to write a basic application following this tutorial and I keep getting a linking error whenever I try to build the project: #include…
TMGunter
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error LNK2019 and LNK2001 with VS2010 and Qt Library

I'm trying to reproduce the Qt example "webbrowser" (from qt-everywhere-opensource-src-4.8.3/examples/activeqt/webbrwowser) with VS2010 ((I work on windows7 x64). So, I copied all files (.h and .cpp) from webbrowser folder to my project. Also, in…
Cristina1986
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error LNK2019 ARuco and OpenCV VS2010 c++

I'm new on OpenCV e VS2010. I work on windows7 x64. I want to detect a marker, so I downloaded the ARuco Library from this site: and I wrote this simple code: #include #include #include…
Cristina1986
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error LNK2019 unresolved external symbol

I am quite new to C++ so I downloaded a sample C++ program. The sample program seems to hit the following error when it is compiling :- Error 22 error LNK2019: unresolved external symbol _acsEnumServerNames@12 referenced in function…
Steven Tang Ti Khoon
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Unresolved external symbol error (LNK2019), after inlcuding headers

I know this has been asked probably a thousand times, but I've been biting my nails on this one for a few days now. I'm fairly new to C++ and this is my first time using Visual Studio. I'm trying to modify the TORCS Racing Simulator for a…
Dennis Schwartz
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LNK2019 error, unresolved external symbol

The error verbatim reads 1>yes.obj : error LNK2019: unresolved external symbol "int __cdecl availableMoves(int * const,int (* const)[4],int)" (?availableMoves@@YAHQAHQAY03HH@Z) referenced in function "void __cdecl solveGame(int * const,int (*…
Sam
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MS VC linker (link.exe): Why no warning for 32/64 bit CPU architecture mismatch?

(Update: As per Hans' suggestion, here's a suggestion to improve link.exe's behaviour, and you can vote for it if you have an account over there.) Okay, I'm a fool. In January I installed Oracle on my computer, Win7 Pro 64 Bit. I installed the 64…
Lumi
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Visual C++ LNK2019 error

Using Microsoft Visual C++ I am trying to compile the file "test.cc" which is part of a small package available for free download at http://sourceforge.net/projects/clippoly/files/ The file test.cc appears as follows: // nclip: a polygon clip…
mnkmath
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LNK2019 error when using #pragma comment, confused by /VERBOSE output

First up, I'm new to C++ (and MS VS), so I'm very probably missing something here. I do have some coding experience, though, and I'm having trouble discerning what might be escaping me. I'm trying to use Logitech supplied .lib and .h files to…
NealC
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C++ SDL - MVS LNK2019

I've just started programming with SDL in C++ with Lazy Foo tutorials and I'm not really experienced in objective programming. I've started getting the LNK2019 Error and can't find the reason for it. I have a class LTexture: #pragma…
Black Flicka
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error LNK2019 - Virtual destructor in abstract class

Possible Duplicate: Pure virtual destructor in C++ I have two classes: the abstract "Game" class and the derived "TestGame" class. All of the functions in TestGame are implemented separately to nothing (for the sake of getting it to compile). I…
ptpaterson
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Installed MPI but still linker error LNK2019 appears

I've installed MS-MPIv5 from Microsoft and also the debugger for msmpi. In proejct properties in VS2012, I've changed C/C++ -> Additional include libraries adding "$(MSMPI_INC); $(MSMPI_INC)\x64" and also Linker -> All options->Additional…
Usr
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Lnk2019 Unresolved External References, but Linker checks proper library

I am trying to use a software development kit to control a cMOS camera. The library which contains all of the functions to control the camera is called atcorem.lib. I have been trying to compile and link an example file included in the SDK which is…
ptbrown
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