Thanks! That guide is much more up to date than the Linux guide I was using from the source download.

Perhaps that should be updated?

Anyway, it wnt through quickly as everything was already installed. I ran the steps in the linked file and got the same error:

checking for lrelease... yes
./configure line 18202: pkg-config: command not found
configure: error: missing QTcore library, make sure libqt4core4 and libqt-dev are installed.