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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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LNK2019 unresolved ext symbol error (Project files included)

I recently started learning some C(watched the first 30 vidoes of "Buckys C++ Programming Tutorials " on youtube),after I thought I knew a little about the basics I went right to tutorials on making d3d hacks(fleeps if you know it) and so on. So I…
Sherman Miller
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Problems trying to write data to a file. error LNK2019: unresolved external symbol

I'm getting an error: 1> Source.cpp 1>Source.obj : error LNK2019: unresolved external symbol "void __cdecl saveToFile(char const * const,struct Task * const,int)" (?saveToFile@@YAXQBDQAUTask@@H@Z) referenced in function _main…
chillpenguin
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How do I add a .cpp file to the linker, Visual C++ 2010 Express to avoid error LNK2019

There are many people who have asked about this error on the forum but none of them seem to have encountered this error in the same situation as me. I am shifting a g++ project to Microsoft Visual Studio C++ 2010 Express. I started off by selecting…
kavini
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Error LNK2019 - Unsure how to fix (1 unresolved external)

I am nearly done with this program, however I am getting an error that I am unsure how to deal with. I have looked for other solutions but none have seemed to help The error I'm getting is: error LNK2019: unresolved external symbol "void __cdecl…
user2302876
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Linking zlib in Visual Studio 2012

I have a C++ program that compiled and ran fine on Linux that I am now trying to compile on a Windows machine in Visual Studio. The main problem I'm facing is the following error message: error LNK2019: unresolved external symbol _gzread referenced…
Adamah
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c++ linking error for template, using only header files, why?

I know there are a lot of similar questions out there - believe me, I've read them - but I can't get this to work. Which is peculiar, because I resolved a similar struggle with a related program just the other day. I realize that the answer to my…
Christofer Ohlsson
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Unresolved external symbol on wince

I received this errors when trying to compile wince code: Error 3 error LNK2019: unresolved external symbol "public: __thiscall CTransInPlaceFilter::CTransInPlaceFilter(wchar_t *,struct IUnknown *,struct _GUID const &,long *)"…
user2004403
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LNK2019 unresolved external symbol reference in function

Getting linker error in a basic cocos2dx app running in visual studio. Occurs when AppDelegate's "applicationDidFinishLaunching" method calls "MyGameScene"'s "singleton" method. I have already checked that the methods defined in MyGameScene.h are…
asloob
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error LNK2019 while using ALUT

Using Visual Studio 10, I have failed to compile the example codes provided by openal http://connect.creativelabs.com/openal/Downloads/Forms/AllItems.aspx I've installed OpenAL11CoreSDK, executing oalinst.exe, also download freealut-1.1.0-bin I've…
millie
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unresolved external symbol LNK2019 confusion

stack overflow, I have been trying to resolve my LNK2019 error with no success. I saw several similar posts on here so I gave this problem its due process and read the other posts (and tried to resolve it myself). There might be something…
Tyler Seymour
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Error LNK2019 C++ Unbearably simple program

I was writing a program to search fro a range of prime numbers, and about halfway through to check my progress I decided to build it to make sure everything is working okay, I keep getting error LNK2019! It says it is an unresolved external.I did…
Cayle
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C++ lnk error 2019 unresolved external symbol virtual errors because of an interface...(?)

Im having problems with making a good interface and use it... My setup overview: An "interface" GraphicsLibrary.H... virtual void drawPoint(const Point& p, unsigned char r, unsigned char g, unsigned char b, double pointSize); with an "empty"…
Sebastiaan van Dorst
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Do I need the /GS compiler switch in VS2012?

After migrating our software from VS2005 to VS2012 I get the following error error LNK2019: unresolved external symbol ___report_rangecheckfailure referenced in function _main which is caused by using /GS option. In VS2012 there is an extended…
alex555
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Issues trying to inherit QLCDNumber in Qt

here is my customized LCD class inherited from QLCDNumber. myLCD.h : #ifndef MYLCD_H #define MYLCD_H #include class MyLCD : public QLCDNumber { Q_OBJECT public: MyLCD(QWidget* parent=0); }; #endif //…
vdegenne
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Unresolved Link Error

I'm receiving this error when I try and compile. error LNK2019: unresolved external symbol "public: void __thiscall Serial::WritePort(char * const)" (?WritePort@Serial@@QAEXQAD@Z) referenced in function "public: void __thiscall…
user1704863
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