QMAKESPEC has not been set, so configuration cannot be deduced.

[ThaRez]

Hello
I installed qt-everywhere-opensource-src-4.8.2 to my Raspberry Pi and everything seemed to go ok, except for that when I
run qmake against a pro file I get the error message

"QMAKESPEC has not been set, so configuration cannot be deduced."?

What does it mean, and how can I fix it? thanks!
RS

[sierdzio]

Most probably the QTDIR environment variable is not set. You can set it in your system, or pass -spec <path to Qt/mkspecs/your make spec> to qmake.

[ThaRez]

Hello and thank you for you reply, however, could you please advice me a bit further how to set this?
Thanks
Best regards
RS