qml2puppet missing in qtcreator 2.8.0 ... and cannot build it

Hey, I am on xubuntu 13.04 64Bit. I have installed qtcreator 2.8.0 (not via apt-get, since that version is older). Now I get a message, that qml2puppet is missing. I am supposed to build it myself, but I do not know how. When I go into its source directory and type qmake, I get: Project ERROR: Unknown module(s) in QT: script quick qml How do I get qml2puppet? Thanks!