Thread: Why vc++ link can not find function which is built in the same project?

Hi there,

When I try to build the executable, the error is as the following:

iis.obj : error LNK2001: unresolved external symbol "int __cdecl lm(int,char *)" (?lm@@YAHHPAD@Z)
Debug/iis.exe : fatal error LNK1120: 1 unresolved externals
Error executing link.exe.

The function is defined in the file buildd.c

Code:

//buildd.c
#include <stdio.h>
#include "buildd.h"

int __cdecl lm(int i,char * filename)
{
	return i + strlen(filename);
}

file buildd.h

#include "StdAfx.h"

int __cdecl lm(int i,char * filename);

and in iis.cpp, the code invoking the function lm is located in the body of int APIENTRY WinMain, which is:

inm = lm(10,ryDict);

Why the vc++ link can not find the function lm, which is built in the same project?

Thanks,