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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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Link with another project's .obj files for GoogleTest using project references

The problem is specific to VS2010. I couldn't reproduce it in a simple case to give an MCVE (see below). There is some old, legacy project. It has (among others) 3 C++ projects: GoogleTestingFramework - a .lib project that delivers features…
Sokeks
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unresolved external: D3DXSaveSurfaceToFile

I am compiling a simple code to capture screenshot using GetBackBufer() method and here is my complete code for reference: // include the basic windows header files and the Direct3D header files #include #include #include…
newbie2015
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LNK2019 Error when compiling GLFW sample code

I recently started following a tutorial for modern openGL but I'm stuck at the very beginning since I cant get to link GLFW. Each Time I try to compile my code, it gives me three errors : Error 1 error LNK2019: unresolved external symbol…
mindoo
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Cannot find cause of LNK 2019 error in my basic code

I am trying to reteach myself on classes and such, but am having a hard time compiling the code. Below are my header, implementation and main codes. When I try to compile, I get: LNK2019 unresolved external symbol "public: __thiscall…
Nathan Fredrickson
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error LNK2019: unresolved external symbol "public: __thiscall destructor

I get this error: Error 1 error LNK2019: unresolved external symbol "public: __thiscall emath::VecN::~VecN(void)" (??1?$VecN@M$02@emath@@QAE@XZ) referenced in function _main C:\Users\RobertBerglund\documents\visual studio…
Robert Berglund
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WordInfo Class implementation error LNK2019: unresolved external symbol

I'm implementing a WordInfo class that holds a word and the lines that the words appear in. But some reason I'm getting a LNK2019 Error when trying to build (I incrementally rebuild as I go to make sure it works). #pragma once #include …
Crowning
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error LNK2019: unresolved external symbol _ Open CV program

I am learning open CV and for the same i was trying few programs. I am referring to this link. http://docs.opencv.org/modules/contrib/doc/facerec/tutorial/facerec_gender_classification.html I am using visual studio 10 to run the same, and i think…
Mayank
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First c++ file and header LNK2019 error

This is my first time having separate files and first time writing a header file, however I keep getting the same error I can't fix. Here are the files: //main.cpp #include #include "Bike.h" /* class Bike{ public: int…
Mick
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How to install libCVD on windows?

I use windows 8 64 bit. I try to install libCVD . I run ./configure;make; make install; commands on cygwin terminal. The screenshot is below : I create a c++ project on vs2013. Then I add /usr/local/bin to environment setting->Path. I add…
zakjma
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Parsing, Lexical Analysis, C++ memory bugs

Below is my code to perform a lexical analysis. I have a couple of requests. I am getting a LNK2019 error. LNK2019 unresolved external symbol "public: __thiscall Stack::Stack(void)" (??0?$Stack@UToken@LexicalAnalysis@@@@QAE@XZ) referenced in…
Andre Rogers
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c++ LNK2019: unresolved symbol in std::vector

I'm a new C++ developer but have programmed before in easier languages. I'm trying to use a vector in a script and I don't understand this error to the point where I don't really know what to do to debug the error. I do so similar postings about…
deery50
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c++ project unable to call/pick up template constructor class causing LNK1120 and LNK2019

I'm getting LNK1120 and LNK2019 Errors on VS 2013 express for Desktop. When I compiled it on g++ command line, it gives error as "undefined reference to Binary_tree::Binary_tree(std::string)". I got all the includes. Here is my code: **//Header…
Gaurav
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LNK 2028 - 2019 / Managed and Unmanaged C++ ? (VS 2008)

I am trying to link an open-source library to one of my project. The library is unmanaged (named Tetgen) and my project is in managed C++. My project recognizes the header and can use the functions defined in it. But I get a 2028 error each time it…
ccote
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LNK errors during built project with libcurl added

I've solved for 2 weeks how to build libcurl project. Finally today I managed it, I followed http://curl.haxx.se/libcurl/c/Using-libcurl-with-SSH-support-in-Visual-Studio-2010.pdf but after I wanted to add libcurl to my own project, it throws lot of…
Zdenek T.
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Compiling ASIO SDK in Qt

I'm trying to compile a Qt project with Portaudio library and Steinberg's ASIO SDK. I managed to compile Portaudio without ASIO, but when doing it with both libraries I get 7 errors like this (with different functions): asiolist.obj:-1: error:…
ignatius
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