Precompiled libs - Cocoa - ppc/i386/x86_64 ??

I am new to Qt, and trying to help build a standalone Mac application for someone.

I need to build it i386, x86_64 and ppc. All supporting third party libraries and the app itself are built this way.

However, the QtSDK seems to be Carbon based, and the libraries in that download are only i386/ppc. Fair enough. The Cocoa libs, though, when I install on my Snow Leopard dev environment, only show i386/x86_64.

Is there a set of precompiled Cocoa libs that have ppc, i386, and x86_64, or do I have to compile from source?

Thanks!

-Steve