Developing Objective-C on Windows PC

In case you are using Windows PC most of the day and wanted to look into finding a way to try and learn Objective-C while on Windows PC. 
You can visite GNUstep site to find GNUstep installer for Windows:www.gnustep.org/experience/Windows.html. 
From this page I downloaded and installed in order (as advised in the page):

GNUstep MSYS System	Required	0.28.1	-	MSYS/MinGW System
GNUstep Core	Required	0.28.0	-	GNUstep Core
GNUstep Devel	Optional	1.3.0	-	Developer Tools

The installation procedure created a program group in the Start/All Programs menu called GNUstep and in there I found Shell application which simulates Unix console.

I used Notepad to create a simple Objective-C file:

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#import <Foundation/Foundation.h>     int main (int argc, const char * argv[])     {         NSAutoreleasePool * pool = [[NSAutoreleasePool alloc] init];         NSLog(@"Hello World!");         [pool drain];         return 0;     }

and saved the file with ".m" extension. When I tried to compile it the first time it failed to find the file so I moved it under C:\GNUstep\msys\1.0\home\dreriMIX folder which was created by the installer.

I ran the command 

gcc `gnustep-config --objc-flags` -L /GNUstep/System/Library/Libraries objC1.m -lgnustep-base -lobjc

and that created an application called a.exe which when I run (use ./a in the console) I get: 

2011-06-08 11:27:14.354 a[20272] Hello World!

Success!


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Copied from http://drerimix.blogspot.com/2011/06/developing-objectice-c-on-windows-pc.html