I have managed to build on Ubuntu 11.10 64 bit. This is what I did:
Edited line 336 in DataGrid.cpp to look like this:
Added "QT += network" to qmake
Thanks for the pointer- messed around enough to figure out the Message(); error, but could not get the build to run without adding the qt+=network to make. I'm on 32bit, 11.10 kubuntu.
Mine now looks like:
qmake /home/test1234/src/qOrbiter/qOrbiter_src/qOrbiter_src.pro -r -spec linux-g++-32 "CONFIG+=for_desktop" QT+=network