Build fat static library (device + simulator) using Xcode and SDK 4+

Question

It appears that we can - theoretically - build a single static library that includes both simulator and iPhone and iPad.

However, Apple has no documentation on this

Answer 1

I actually just wrote my own script for this purpose. It doesn't use Xcode. (It's based off a similar script in the Gambit Scheme project.)

Basically, it runs ./configure and make three times (for i386, armv7, and armv7s), and combines each of the resulting libraries into a fat lib.