To compile and install FCE Ultra, follow these steps:
  1.  Ensure that SCons, SDL, libz, and liblua5.1 are installed on your system.
    On an ubuntu/debian system, run:
      sudo apt-get install scons libsdl1.2-dev libsdl1.2debian-esd liblua5.1-dev zlib1g-dev zenity
  2.  If you are running linux, ensure zenity is installed on your system.
    On an ubuntu/debian system, run:
      sudo apt-get install zenity
  3.  Run "scons" to build fceux.
  4.  To install on Linux/BSD run "scons install" as root.