How to set QMAKESPEC ??

[vermarajeev]

I'm not too a linux expert but I think you can use export QMAKESPECS=PATH WHAT YOU WANT TO SET.
Hope this helps.

Hmm I think this will help you

Set QMAKESPEC to the spec that is most suitable for your platform.
export QMAKESPEC=$QTDIR/mkspecs/linux-g++