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Message-ID: <3E2619AF.8060107@kleckner.net>
Date: Wed, 15 Jan 2003 18:32:15 -0800
From: Jim Kleckner <jek-cygwin AT kleckner DOT net>
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To: "Larry Hall (RFK Partners, Inc)" <lhall AT rfk DOT com>
CC: cygwin AT cygwin DOT com
Subject: Re: Using gcc to build a DLL discovered and linked at runtime
References: <4 DOT 3 DOT 1 DOT 2 DOT 20030115160210 DOT 036f2680 AT pop DOT rcn DOT com>
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Larry Hall (RFK Partners, Inc) wrote:

>
>I assume the reason you're using the -mno-cygwin flag is because of 
>Chris's comment.  Clearly what you're trying to do won't work if you 
>link against the Cygwin DLL.  Using -mno-cygwin should remove cygwin1.dll
>from the equation but just substituting MSCVRT.DLL for cygwin1.dll doesn't
>mean that MSCVRT.DLL will load dynamically either.  I dunno but judging
>by the fact that you're still having troubles, the assumption is suspect.  
>However, since you're no longer linking against cygwin1.dll (which isn't 
>going to work), you're really just using the mingw pseudo cross compiler of 
>Cygwin's gcc (the -mno-cygwin switch) to produce a straight Win32 DLL.  In 
>this context, it's really not a Cygwin question anymore (you could use 
>mingw's gcc and presumably see the same problem... if not, then maybe that's 
>your solution).  I'd recommend following up on this at mingw-users AT mingw DOT org 
>if the mingw site doesn't have a solution for this problem.
>
>Good luck,
>
>
>Larry Hall                              lhall AT rfk DOT com
>RFK Partners, Inc.                      http://www.rfk.com
>838 Washington Street                   (508) 893-9779 - RFK Office
>Holliston, MA 01746                     (508) 893-9889 - FAX
>
Thank you for the pointers.  I downloaded mingw and it gives the same 
behavior.  I will ask the question on the mingw list.

Note that this example doesn't use cygwin or for that matter any 
functions at all.

Jim


 #include "windef.h"
 extern int __stdcall PPI(int);

 __declspec(dllexport) int __stdcall PPI(int notused)
 {
     return 1;
 }



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