Configuring Qmake mkspecs after it's built

[wysota]

Does remote debugging work from QtCreator 4.8 on Ubuntu with rpi as target?

Qt Creator's current version is 3.3 so I can't say whether it will work in 4.8

Haven't tried yet, but if it doesn't I'm less enthused about going to cross-compilation development.

I don't see why it shouldn't if you have gdbserver for Pi available.