Making a fat static library for iOS device and simulator

That's a pain since you either change them manually or set the linking flags on different Xcode targets to use the appropriate library (whereas normally with libraries and frameworks you just drag it into your project and you're done).

Instead, you can build your own fat (multi-architecture) library from the provided archives and Xcode will link against the appropriate architecture segment (flagrantly ignoring Erik's dire predictions about testability and your personality ;)

We achieve this using the lipo tool, eg:

Update:

The latest Omniture libraries, available via the Omiture SiteCatalyst admin console, now contains armv6 and armv7 architectures. Oddly, that means that they provide two archives—one regular i386 archive (with no fat header) for the simulator and one fat archive for the device with armv6 and armv7 segments. Since the device archive headers now specify the archives already, we don't need to tell lipo anything other than the archive file name.