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06.09.2005 at 09:30AM PDT, ID: 21452684
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Attachment Details

Linker error LNK2019: unresolved external symbol _main referenced in function _mainCRTStartup

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8.6
Tags:

external, unresolved, symbol, error, _main

Hi, I have created a C++ project - a Class Library.

The class is very basic and has just one method:

      public __gc class IMLibrary
      {
            void TestMethod();
      };

I'm including the header files:

#include <stdio.h>
#include <math.h>

#include "stdafx.h"
#include "IMLibrary.h"

and the method uses sin, cos, and sqrt. All of these give linker errors. I am obviously missing something.

I also get the linker error:

error LNK2019: unresolved external symbol _main referenced in function _mainCRTStartup

Ultimately I'm trying to write a dll that will access some .lib files that I have, and then call this from a .NET file, but for some reason I can't even get past a simple function call!

Thanks.
Answered By: AlexFM
Expert Since: 08/21/2002
Accepted Solutions: 5112
AlexFM has been an Expert for 6 years 4 months, during which he has posted 13959 comments and answered 5112 questions. AlexFM is just one of 401 experts in the Microsoft Visual C++.Net Zone. 2 experts collaborated on this answer, which was graded an "A" by the asker.
 
 
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