How to use xcode compiler warnings to determine minimum IOS deployment target

Posted by Martin Bayly on Stack Overflow See other posts from Stack Overflow or by Martin Bayly
Published on 2011-01-14T05:51:37Z Indexed on 2011/01/14 5:53 UTC
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iphone

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xcode

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ios

I'm building an iOS app using Xcode 3.2.5 with the Base SDK set to iOS 4.2

I know I've used some api's from 4.0 and 4.1 but not sure about whether I actually require 4.2.

According to the iOS Development Guide, "Xcode displays build warnings when it detects that your application is using a feature that’s not available in the target OS release".

So I was hoping to use the compiler warnings to derive my minimum OS requirement. However, even when I set my iOS Deployment Target to iOS 3.0, I still don't get any compiler warnings.

I must be doing something wrong, but not sure what? Can anyone confirm that they get compiler warnings when the iOS deployment target is less than the base SDK and the code uses base SDK functions? Or do the compiler warnings only show if you link a framework that didn't exist in the iOS deployment target version?

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