diff --git a/o/objc.m b/o/objc.m
index 0398e29e..d53547e1 100644
--- a/o/objc.m
+++ b/o/objc.m
@@ -1,7 +1,21 @@
-#import <Cocoa/Cocoa.h>
+/*
+ Build on OS X: 
+ clang -framework Foundation -fobjc-arc objc.m -o objc
+ 
+ Build on Linux with GNUstep:
+ clang `gnustep-config --objc-flags` `gnustep-config --base-libs` -fobjc-nonfragile-abi -fobjc-arc objc.m -o objc
+ */
 
-int main(int argc, char *argv[])
+#import <Foundation/Foundation.h>
+
+int main(void)
 {
-    NSLog(@"Hello, World!\n");
-	return 0;
-}
+    @autoreleasepool
+    {
+        NSFileHandle *_stderr = [NSFileHandle fileHandleWithStandardError];
+        NSString *string = @"hello, world\n";
+        NSData *data = [string dataUsingEncoding:[NSString defaultCStringEncoding]];
+        [_stderr writeData:data];
+    }
+    return EXIT_SUCCESS;
+}
\ No newline at end of file