OK so there are two qmake commands there -
qmake-qt4 QtBitcoinTrader_Mobility.pro
qmake-qt4 QtBitcoinTrader_Desktop.pro
both for linux.
I'm running mint on a desktop so should I go for the Debian/Ubuntu etc line, or for the all linux Mobility.pro line ?
Try QtBitcoinTrader_Desktop.pro
If not works, than try QtBitcoinTrader_Mobility.pro