[darwinbuild-dev] Building Darwin 9 on a PowerBook G4 for a i386 PC

PowerBook G4 / Mac OS X 10.5.4 / Xcode 3.1 Can darwinbuild be used for building Darwin 9.4 for a i386 PC an a PowerBook G4, or is this script meant to build Darwin for Macs only? Best regards Rolf