There is now an official PPA repository for RetroArch and Libretro core libraries, currently supports Ubuntu 16.04, Ubuntu 15.04, Ubuntu 14.04, Ubuntu 12.04, Linux Mint 17, eOS Freya.
1. To add the PPA, open terminal from the Dash/Menu (or press Ctrl+Alt+T) and run command:
Code: Select all
sudo add-apt-repository ppa:libretro/stable
Code: Select all
sudo apt-get update
sudo apt-get install retroarch retroarch-* libretro-*