Sorry to resurrect an old topic, but how did you manage to configure Qt on os x? I'm using Jared Wolff's toolchain but get stuck at ./configure and can't build a RPi-friendly qmake.

Go to Tools->Options...->Help->Documentation and see which docs are loaded. Also, check Tools->Options...->Build & Run->Qt Versions, maybe it is picking up your system Qt, however it is unlikely.