Ok guys, thought I would share my experience as I was having major difficulty getting the qt wallet to run. When running it would throw up a "libminiunpnp" error or something to that effect.
Any way, tried googling the error and really got nowhere so decided to have a go at compiling myself.
crowitec helped me obtain the source files from git and I followed his instructions, however when coming to "make" the file, errors yet again!!
This time different, compiler complaining about big_num, lots of times.
crowitec was unfortunately busy so I had to "go it alone" to try and sort this out (I don't give up easily).
LOTS of googling later, I had some idea that it was possibly a libssl conflict and newer versions don't seem to like compiling the qt.
So I decided to make it slightly easier on myself and did the following -
chmod +x qt-opensource-linux-x64-5.7.0.run
Ok, Qt Creator installed (you can use Ubuntu's own installer I believe rather than CLI)
Open the file "polytimos.pro" from the github using Qt Creator. Then went to "Build-->Run Qmake"
This then produced a new Makefile
Tried to "make" and again throwing up errors. (Same as before, big_num rubbish)
Ok, so to solve this you need to do the following -
sudo nano /etc/apt/sources.list
Added the two following lines to the sources list -
sudo apt-get update
sudo apt-get remove libssl-dev
sudo apt-get install -t jessie-backports libssl-dev
Ran make again, and everything worked perfectly.
If you are having trouble with the qt, hopefully this will help you if you fancy self-compiling
There is a possibility after exiting and restarting the wallet, for example when rebooting, you get an error about this -
error while loading shared libraries: libdb_cxx-5.3.so:
If you do, please do - sudo apt-get install libdb++-dev