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
3 answers

How to solve the LNK2019 linkage error?

I have 2 projects, RoofExp and testapp, the RoofExp is a DLL project which is written by C, the testapp is a win32 console project to test the RoofExp.dll. My code is listed below: roofexp.h #ifndef ROOF_EXP_PARSER_H #define…
Kecise
  • 61
  • 6
0
votes
2 answers

Linking errors when compiling c with c++

I'm new to programming, and am having problems with a sample c code for to interface a synclink adapter using serial API. I am trying to compile a C source file with C++ compiler (Visual Studio C++ 2010). I've changed the settings for the C++…
user2598476
  • 3
  • 2
0
votes
1 answer

VS2010E Qt 5.1 compilation error LNK2001 LNK2019

i'm trying to build a simple Qt window from a photoshop plugin i put libraries where it belongs in the Include directory : E:\Program_Files\Qt32\5.1.0\msvc2010\include; E:\Program_Files\Qt32\5.1.0\msvc2010\include\QtWidgets\; in the library…
IonOne
  • 385
  • 4
  • 15
0
votes
1 answer

error LNK2019: unresolved external symbol cvSmooth referenced in function "void __cdecl example2_4(struct _IplImage *)"

I hope that anyone familiar with openCV and image processing will help me soon. I'm absolutely new to openCV and VC++ and this is the third time this week, I've encountered the error LNK2019. I know that this error means that the .lib file…
Sepideh Abadpour
  • 2,550
  • 10
  • 52
  • 88
0
votes
1 answer

LNK 2019:Unresolved External Symbol Error in VS 2010

I am receiving the LNK 2019 error in VS2010 while trying to build the project.I have included the header files from other project using external dependencies.Each time at build time the LNK 2019 rises for the function defined in those header…
Hammad Ali Butt
  • 75
  • 4
  • 13
0
votes
1 answer

LNK2019: unresolved external symbol _WinMain@16 referenced in function ___tmainCRTStartup

Googled for a couple of hours already to solve this error and found out a lot of people get this error, but haven't found a solution for my own case yet. Most of the time the solution is to change the SubSystem to the appropriate option in the…
Jvlonden
  • 155
  • 2
  • 8
0
votes
2 answers

ERROR LNK2019 : UNRESOLVED EXTERNAL ERROR

I am facing LNK2019 error. I have user defined header file - #include "prograamer.h" as shown in the code below. I am trying to make "dll" file for the software. But when I compile the code i faced this annoying error. Please see the code below :…
user2480424
  • 1
0
votes
1 answer

Using libpq (PostgreSQL) library in VS 2012 project

I'm using a VS 2012 with Windows 7 x64. My friend wrote for me C++ class which is using libpq: ... #include const char* QStrToCStr(QString qstring); void ShowInfoBox(QString string); QString IToQS(int x); QString DToQS(double x); class…
Piotr Rachwał
  • 35
  • 7
0
votes
0 answers

"LNK2019: unresolved external symbol" for all class member functions (functions are defined in .cpp)

Doing an assignment where a program has to be written as object-oriented code. EDIT: Using VS2012 command-line compiler, command "cl History.cpp -EHs" When I attempt to compile I get the errors History.obj History.obj : error LNK2019: unresolved…
stellars jay
  • 23
  • 3
0
votes
1 answer

QSqlDatabase LNK2019 error

I tried to compile the following code in Qt 5.0.0: #include #include #include #include int main(int argc, char *argv[]) { QApplication a(argc, argv); QStringList db =…
Aidin.T
  • 731
  • 3
  • 10
  • 25
0
votes
2 answers

Templated binary search tree c++, unresolved external error

I am working on a template for a binary search tree and I am getting the error below. I know there are similar post but I can't figure this thing out. Templates are definitely a weak subject for me so I think I am missing some fundamental semantic…
wmurmann
  • 115
  • 2
  • 13
0
votes
1 answer

boost exposing classes LNK2019 / module does not define init function

I know those errors in the headline are nothing new, but in this constellation I have here it's rather strange and I don't find a solution that is helping. So let me explain. I'm working with boost.python, Visual Studio 2012 and the tutorial from…
Chris S
  • 112
  • 2
  • 10
0
votes
2 answers

VS2010 MFC LNK 2019 unresolved external symbol

Hi guys I hope that this problem could be solved asap. I get this problem when I tried to convert ANSI C code to MFC. library file is linked and header file is included. I don't know how or what this error is about. Need help. Thank You. Error 1 …
Ashton
  • 83
  • 1
  • 3
  • 12
0
votes
1 answer

LNK 1120 + LNK2019 Error

i'm working on a c++ project and have never really used header files before, I am trying to build my project however it is throwing up several linker errors, I have no idea what they are or how to go about fixing them! The errors are as…
Ste Hawkins
  • 31
  • 7
0
votes
1 answer

Error in DirectX example from Microsoft

I'm trying to learn C++ and DirectX, got VS 2012 Express Desktop today for Windows 7. I should probably mention I already had DirectX SDK for VS 2010 installed. The first of the 7 tutorials will compile fine, the rest are giving errors. Because…
user2247872
  • 91
  • 6
1 2 3
…
37 38