title: Developing for 2.2.1 SDK on Snow Leopard
body: <p>I’ve installed Snow Leopard, have Xcode 3.2 and 3.0 iPhone SDK. I want my applications to run on 2.2.1, but the SDK is nowhere to be found in Xcode. I’ve set the deploy target to 2.2.1, but still I cannot be sure I am not using any 3.0-isms. (I’ve sent a sample application to my friend who still has 2.2.1 and it does not run, so it looks I really <em>do</em> use some 3.0 specific API.) <strong>How can make sure that my applications will run on 2.2.1?</strong> (Simulator also lists only 3.0 as version option.) I’d hate to check my sources manually for every call that might not have existed in 2.2.1.</p>