[ryandrake]

For all but the most complex, or assembly-optimized, or just poorly written software, supporting 64-bit should be no more than a recompile. When I started producing 64-bit versions of my iOS apps, at first I didn’t even know it happened because Xcode just did it for me. Any yes, they included C and C++, and 3rd party code. It took zero hours to support. It was almost too automatic for comfort.

[saagarjha]

You might not always have access to the source of something you ship with your app.