I have been developing a Qt C++ program at work

Having a problem opening .pro file on home laptop where
the qt libraries are visable.

When I try to compile i get the following:

Error while building project DIET_to_XML (target: Desktop)
When executing build step 'qmake'
Error while building project DIET_to_XML (target: )
When executing build step 'qmake'.

When is missing from my configuration?