RE: Wierd Problem-missing .lib files even after successful dll creatio

From:

=?Utf-8?B?QnJ1bm8gdmFuIERvb3Jlbg==?= <bruno_nos_pam_van_dooren@hotmail.com>

Newsgroups:

microsoft.public.vc.language

Date:

Mon, 26 Jun 2006 23:41:01 -0700

Message-ID:

<FB746126-3832-44BC-9300-2B9BF685EEB8@microsoft.com>

I am facing a wierd problem.
I have created a simple dll which compiled sucdcesfully.
But when i cheked for the lib files they were missing.
My files are as following.

//optest.h

#ifndef _OPTEST_H_
#define _OPTEST_H_
#include <iostream.h>
#include <stdio.h>
#include <windows.h>
  extern "C" __declspec(dllexport) int add( int x , int y);
  extern "C" __declspec(dllexport) int sub( int x , int y );
  extern "C" __declspec(dllexport) int mul( int x , int y );
  //extern "C" __declspec(dllexport) int div( int x , int y );
  extern "C" __declspec(dllexport) void get( int x , int y );
#endif

//optest.cpp -source file for optest.h

#include "optest.h"

extern "C" __declspec(dllexport) int add( int x , int y );
extern "C" __declspec(dllexport) int sub( int x , int y );
extern "C" __declspec(dllexport) int mul( int x , int y );
extern "C" __declspec(dllexport) void get( int x , int y );
class oper
{
    public:
            int a,b;
            void get(int x , int y );
            int add( int x , int y );
            int sub( int x , int y );
            int mul( int x , int y );

};

void oper :: get( int x ,int y )
{
    a = x;
    b = y;
}

int oper::add( int x, int y )
{
    return(x+y);
}

int oper::sub( int x , int y )
{
    return(x-y);
}

int oper::mul( int x , int y )
{
    return(x*y);
}

Can anyone suggest me a solution for this.
Both the .exp and .lib files are missing though the dll is compiling
successgully.

lib and exp files are only generated if there are exported symbols. there
aren't any in your dll. you can check this with dependency walker.
you declare exported C functions, but they are never defined.

the functions that you implement are class members, not plain C functions.
the linker will export functions only if they match the export declaration
100%.
the fact that your methods have the same name as the export declaration has
absolutely no effect.

if you want to export your class, you should mark the class declaration for
export.

--

Kind regards,
    Bruno.
    bruno_nos_pam_van_dooren@hotmail.com
    Remove only "_nos_pam"