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The weakest link: A question on olders SDKs
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The weakest link: A question on olders SDKs


  • Subject: The weakest link: A question on olders SDKs
  • From: Alexander von Below <email@hidden>
  • Date: Wed, 28 Nov 2012 21:55:20 +0100

Hello List,

I have a question on dyld and weak linking:

I can build and run an app on iOS 4 which contains the symbol UIPageViewControllerOptionInterPageSpacingKey, which is actually available only on iOS 5 and up (I am not talking about using that symbol, just linking it)

But if I use UIPageViewControllerOptionSpineLocationKey, another symbol for a UIPageViewController options key (but available in iOS 5 and up), I have to weak-link the UIKit Framework.

Is this because UIPageViewControllerOptionInterPageSpacingKey was already present as private in iOS 4, or why is it weak linked, whereas UIPageViewControllerOptionSpineLocationKey is not?

Any insight is appreciated!

Thanks

Alex
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