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    <p>You <em>can</em> use Objective C inside the Windows environment. If you follow these steps, it should be working just fine:</p> <ol> <li>Visit the <a href="http://www.gnustep.org/windows/index.html" rel="noreferrer">GNUstep website</a> and download <code>GNUstep MSYS Subsystem</code> (MSYS for GNUstep), <code>GNUstep Core</code> (Libraries for GNUstep), and <code>GNUstep Devel</code></li> <li>After downloading these files, install in that order, or you will have problems with configuration</li> <li>Navigate to <code>C:\GNUstep\GNUstep\System\Library\Headers\Foundation</code><sup>1</sup> and ensure that <code>Foundation.h</code> exists</li> <li>Open up a command prompt and run <code>gcc -v</code> to check that <code>GNUstep MSYS</code> is correctly installed (if you get a file not found error, ensure that the <code>bin</code> folder of <code>GNUstep MSYS</code> is in your <code>PATH</code>)</li> <li><p>Use this simple "Hello World" program to test GNUstep's functionality:</p> <pre><code>#include &lt;Foundation/Foundation.h&gt; int main(void) { NSAutoreleasePool * pool = [[NSAutoreleasePool alloc] init]; NSLog(@"Hello World!."); [pool drain]; return; } </code></pre></li> <li><p>Go back to the command prompt and <code>cd</code> to where you saved the "Hello World" program and then compile it:<sup>2</sup></p> <pre><code>gcc -o helloworld.exe &lt;HELLOWORLD&gt;.m -I /GNUstep/GNUstep/System/Library/Headers -L /GNUstep/GNUstep/System/Library/Libraries -std=c99 -lobjc -lgnustep-base -fconstant-string-class=NSConstantString </code></pre></li> <li><p>Finally, from the command prompt, type <code>helloworld</code> to run it</p></li> </ol> <p>All the best, and have fun with Objective-C!</p> <hr> <p><strong>NOTES</strong>:</p> <ol> <li>I used the default install path - adjust your command line accordingly</li> <li>Ensure the folder path of yours is similar to mine, otherwise you will get an error</li> </ol>
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    1. COThis suggested installation didnt work on my PC because i have already installed gcc which i used for nasm. So i just corrected `gcc -o helloworld...` to `c:\gnustep\bin\gcc -o helloworld...` and it worked. The alternative would be to modify Environment Variables which i didnt do since i was just sight seeing Objective C. Thanks to teshguru for up to the point answer.
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      1. USMartin Berger
 

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