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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++ LNK 2019 Error with templates/classes

So this part of the code is a small part of a large project. I can't copy the entire project but it's really just 2 lines making the error. I'm trying to access the function "mergeSort" from the class Metrics. Metrics is a different class than the…
user3421510
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error LNK2019: unresolved external symbol "double __cdecl calculateRetail(double,double)"

I'm getting this error: error LNK2019: unresolved external symbol "double __cdecl calculateRetail(double,double)" (?calculateRetail@@YANNN@Z) referenced in function _main 1>c:\users\100236744\documents\visual studio 2010\Projects\Item sales price…
tinywolves
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OpenGL Red Book example 1-1 error LNK2019; Problems with GLUT and GLEW, as well as many default libs

I got the Red book to expand my currently small knowledge on OpenGL, but the first tutorial is giving me nightmarish problems. You've seen a few of these, I know, but I've got LoadShaders.cpp pointed to and /NODEFAULTLIB set to yes in the project…
SniGuy
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error LNK2019: unresolved external symbol, fatal error LNK1120: 1 unresolved externals

I have looked both of these errors up on this website and tried to change my code to accommodate the changes that were suggested but they did not work for my code, so here is my code and I hope you guys can help me out. It is not complete as I am…
user2924291
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QT and unresolvenextarnal symbol

I am fightingwith QT now. I add a method to my APIinmoov.h, and I fill it in API.cpp. That works, but when I call it in another class that include it #include "APIinmoov.h" It told me: tiempomanual.obj:-1: error: LNK2019: unresolved external…
Elseine
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Program should run... fatal error LNK1120 and error LNK2019

We were given a header and cpp file for our next project from which we need to derive a class. These two files should work properly "out of the box" but for some reason I'm getting these errors and clicking on the errors doesn't take me anywhere.…
floatfil
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error LNK2019: unresolved symbol "char_cdecl st(void)

Okay, so I've looked around and I still do not quite understand why I am getting this error. My code is included below. I had some older code that was working just fine. Then I decided to make it so you could perform more than one calculation per…
Chris Altig
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error LNK2019: unresolved external symbol Help on what's missing?

1>------ Build started: Project: project4, Configuration: Debug Win32 ------ 1> proj4_driver.cpp 1>proj4_driver.obj : error LNK2019: unresolved external symbol "public: class cop4530::BST
DarkKunai99
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Directx8 error LNK2019: unresolved external symbol

Im making RPG game (Diablo) for my graduation project. I tried compiling Jim Adams Programing RPG with Directx 8 sample. Ignore comments they are in other…
user2124198
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C PLUS PLUS Project Linking protobuf static library comes out error LNK 2001

Protobuf Version : 4.22.2 CMake Version : 3.27.0 C++ Complier version : MSVC 19.36.32537.0 My English is poor, so I hope you will be patient to read it, please. I compile protobuf to static library and link it to my project, but always come out…
user20941337
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I downloaded wxWidgets using vcpkg and tried to compile an example from the wxWidgets website, but I’m getting an ‘unresolved external symbol’ error

The #include for the library works normally and Visual Studio 2019 doesn’t point out any errors in the functions. However, when compiling, the following error appears: code: LNK2019 Description: unresolved external symbol, _main, referenced in…
JMBCODE
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i am facing LNK2019 error uresolved external error

I am creating a text compression using huffman algorithm . In this I want to create a Huffman Tree , CreateHMNode accept two nodes and create a node with sum of frequency of others . but it shows this error ,please help me to solve LNK2019…
Rehan Akhtar
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LNK2019 while using SDL2 and vcpkg

I am using SDL2 and vcpkg. I install sdl2 by vcpkg and build project in Visual Studio 2022 Debug x86 LNK2019 unresolved external symbol _main referenced in function "int __cdecl invoke_main(void)" (?invoke_main@@YAHXZ) code: #include…
Neoxy
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How can I solve error LNK2019 with GLFW in librealsense example code project "capture" for c++

I've looked and tried the solutions provided in the many other posts regarding my issue but none of them worked for me. So I've been working on a project that requires the use of librealsense, a library which allows realsense camera users to do many…
Dakom
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LNK2019 Unresolved external symbol OOP and polymorphism?

My project is to build a stack in C++, And I implemented it using array ,but I have 6 Errors: all of them LNK2019 Unresolved external symbol to some functions implementation in the .CPP file I know this is a linker errors , the problem occurred when…
mohammed yahya
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