For Ubuntu:
sudo apt-get install libqt5multimedia5-plugins qtmultimedia5-dev qttools5-dev qttools5-dev-tools libqt5opengl5-dev qtbase5-dev libusb-1.0
mkdir out && cd out && cmake ../ && make
"sudo apt-get install librtlsdr-dev" is not currently avaulable in utopic 14.10 amd64.