For whatever reason, I discovered that if I compile the program directly from the MinGW \bin directory... it works. What's strange is that I have "c:\MinGW\bin" in my system PATH. At any rate, I'm able to compile now. Thanks for the reply.
 
Gary.

--- On Fri, 10/24/08, Marc Vaillant <vaillant@fastmail.fm> wrote:
From: Marc Vaillant <vaillant@fastmail.fm>
Subject: Re: [Mingw-users] Objective-C for MinGW - problem
To: gedumer@yahoo.com, "MinGW Users List" <mingw-users@lists.sourceforge.net>
Cc: mingw-users@lists.sf.net
Date: Friday, October 24, 2008, 5:40 PM

On Fri, Oct 24, 2008 at 09:39:13AM -0700, Gary Dumer wrote:
> I'm trying to use Objective-C with MinGW, but I get the following
error
> message:
>  
> gcc: C:\LMGMC~1\main.m: Objective-C compiler not installed on this
system
> 
> I use the following command-line statement to compile my program:
>  
> gcc main.m -o prog1 -l objc
>  
> I downloaded "gcc-objc for Objective C" from the MinGW site and
added the files
> to the proper directory. I have the latest distro of MinGW. Is there
anything I
> have to do to "install" Objective-C other than that?

Well, not sure about that procedure but I compiled gcc from source with
support for objc and it works fine for me.  

If you are on a mac, there's a nice installation of the mingw cross
compiler, together with a port of the cocoa frameworks.  The project is
called cocotron.  http://www.cocotron.com/  I haven't yet tried it but
it looks very nice.

Good luck,
Marc