Thanks! I have managed to compile it with a tiny bit of effort.. when I will be sitting in front of the miner I will try it out (as I understand it needs a bit of GUI for the setup)
No GUI required. AMDOverdriveCtrl can work in batch mode (hence the '-b' flag I gave above). I don't remember exactly but if you run the command once it will generate some default profiles based on your cards and put them in "$HOME/.AMDOverdriveCtrl". You can then edit the profile and apply it with the line I gave above.
Here's a profile I'm currently using for my 5850 if you can't get it to generate one for some reason (the voltage may be a little low for a 5830).