Cocoa Tiny

// clang -framework Cocoa hello.m -o app && ./app
#import "Cocoa/Cocoa.h"

int main(int argc, const char * argv[])
{
    NSAutoreleasePool * pool = [[NSAutoreleasePool alloc] init];

    [NSApplication sharedApplication];

    NSUInteger windowStyle = NSTitledWindowMask | NSClosableWindowMask | NSResizableWindowMask;

    NSRect windowRect = NSMakeRect(100, 100, 400, 400);
    NSWindow * window = [[NSWindow alloc] initWithContentRect:windowRect
                                          styleMask:windowStyle
                                          backing:NSBackingStoreBuffered
                                          defer:NO];
    [window autorelease];

    [window orderFrontRegardless];
    [NSApp run];

    [pool drain];

    return 0;
}