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Message-ID:	<3FF1EFB3.5000509@keypro.fi>
Date:	Tue, 30 Dec 2003 23:35:47 +0200
From:	Jani Tiainen <jani DOT tiainen AT keypro DOT fi>
User-Agent:	Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.6b) Gecko/20031205 Thunderbird/0.4
MIME-Version:	1.0
To:	cygwin AT cygwin DOT com
Subject:	DLL and external symbols

Hi,

I'm sure that this has been answered several times, but I'll ask again 
because couldn't find any solution by myself.

I would like to build DLL (or any other sort of library) that refers to 
external symbols in main application.

So far I have been able to build non-working constructs. =)

Let's say that I've two files:

main.c:

#include <stdio.h>

extern void funcInMyLib(int);

void funcInMain(int i)
{
	printf("funcInMain(%ld)\n", i);
}

int main(int argc, char **argv)
{
	funcInMyLib(1);
	return 0;
}

and second file (library)

mylib.c:
extern void funcInMain(int);

void funcInMyLib(int i)
{
	printf("Calling back...");
	funcInMain(i + 1);
}

--------

Now how I can get this working, or is it possible at all?

With .DEF files I can get things compiled and linked, but even program 
crashes at startup, or end up requesting "main.exp.dll".


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