Stack Overflow
Stack Overflow

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.

Before posting, check these posts

558 questions
0
votes
4 answers

Keep on getting LNK2019 error when mixing C and C++

I'm trying to call C code from C++. I have 3 files: pubsub.cpp, pubsublib.c & pubsublib.h. I know I have to use extern "C" in order to call a C function from C++. I've literally tried everything, but I am still getting the following LNK2019…
woutkl
  • 11
  • 1
  • 5
0
votes
0 answers

error LNK 2019 Visual Studio 2013

I'm building a program that reads in states(strings) and tax rates(floats) from an input file and stores it into a vector of objects of a class called TaxBill. The class has 3 data members called stateName, taxBill, and index. There are also…
Mike Bagnasco
  • 47
  • 1
  • 9
0
votes
0 answers

login.obj:-1: error: LNK2019: unresolved external symbol

login.h: #ifndef LOGIN_H #define LOGIN_H #include #include "usecase.h" #include #include #include namespace Ui { class login; } class login : public QMainWindow { Q_OBJECT public: explicit…
thirteen4054
  • 465
  • 4
  • 17
0
votes
2 answers

LNK2019 and LNK1120 with functions in an external file

I have taken out some functions from a source file into another since I want to use them also in other files. The current structure is as follows utils/extFuncs.h #ifndef _extFuncs_h #define _extFuncs_h inline int someFunction (float…
Etan
  • 17,014
  • 17
  • 89
  • 148
0
votes
1 answer

Unresolved External _main in a console application

I have the following main function: int main(int argv, char** argc) { MainGame mainGame; mainGame.run(); system("pause"); return 0; } it throw a LNK2019 unresolved _main at me. now i did a bit of google-ing and found countless examples of people…
Todegal
  • 44
  • 1
  • 9
0
votes
0 answers

Error LNK2019 external

I can't quite make sense of the errors i get when trying to get my project to work. Can someone maybe point me in the right direction? I am fairly new to C++, so I might be doing something crucially wrong here without being aware of it. The…
Lunacrescens
  • 1
  • 1
0
votes
1 answer

SCIP and Visual Studi: error LNK2019

I want to solve the n-queens problem using SCIP (version 3.2.1) in Visual Studio 2010 (version 10.0.40219.1). Source files can be found here: http://scip.zib.de/download/files/Queens.tgz I did not write any code myself, but just included queens.hpp,…
J ve
  • 65
  • 8
0
votes
1 answer

Error LNK2019 - Name Decoration - Missing __imp_

This is probably a duplicate, but there are so many LNK2019 questions, I can't read them all. Here's my problem: I'm getting the following error message: 4>ScatterometerView.obj : error LNK2019: unresolved external symbol "__declspec(dllimport)…
Steve Eckhardt
  • 11
  • 1
0
votes
1 answer

Linking error when calling a function

When my code is calling a certain function, I'm getting an error: H:\workspace\HW5\HW5\Manager.obj Error 22 error LNK2019: unresolved external symbol "public: void __thiscall Shalishut::Task8_MoveVehicleFromBaseToBase(class Military *,char const…
Aviadjo
  • 635
  • 5
  • 17
  • 36
0
votes
0 answers

LNK2019 Error with QT IDE-generated GUI-files

I started working on the GUI for an application in C++ using the Qt-Creator and Designer. I always added the new files (cpp, h, ui) by using the dialog that Qt provides. Here's what I get now: moc_basewidget.obj:-1: Error: LNK2019: unresolved…
Saftkeks
  • 181
  • 2
  • 15
0
votes
1 answer

C++ LNK2019 ( between project classes )

I have an very strange error: when I want to use the SocialServer::Client class from my SocialServer::Server class, the linker threw me two LNK2019 errors : Error 1 error LNK2019: unresolved external symbol "public: void __thiscall…
Sywesk
  • 21
  • 2
0
votes
0 answers

interplay of two different c++ projects in MSVS

I think this is a basic question, however I can not find any adequate posts about this topic or maybe I just don´t know how to find the right wording when searching. I have two projects in two different solutions. Project A is an application (.exe)…
Richard
  • 27
  • 6
0
votes
0 answers

C style function causes LINK2019 error

Simple problem, the I added a 3rd party library which was done in C to my C++ project. For whatever reason it causes LINK2019 error, the header that came with the C file is included and defines everything. However each time I try to use any of the…
AdmiralFishHead
  • 67
  • 1
  • 7
0
votes
0 answers

Rotating LNK2005 / LNK2019 Errors in CPPUnitTest in C++ Visual Studio

I've been trying to set up a CPPUnitTest to test a C++ project. I've came across an error where I've got two rotating errors depending on how I try to solve my problem. I've got two projects in a solution in Visual Studio. One is for testing, one is…
throwsFireball
  • 1
  • 1
0
votes
0 answers

Exporting C++ class from dll results in linking error

I want to export a class from dll. If I put MIKROTIK_API (_declspec(dllexport) in front of the class name, I get a linking error. Without MIKROTIK_API , it compiles correctly. I have put _Exporting in the preprocessor definition of the…
Habib
  • 41
  • 7
1 2 3
…
37 38