Could not initialize SDL - No available video device (Did you set the DISPLAY variable?

1,修改ffbuild目錄下的config.mak

2，
sudo apt-get build-dep xscreensaver
sudo apt-get source xscreensaver -b

3，export DISPLAY=:0

4、apt-get install libsdl2-dev

6、apt-get install xorg-dev
sudo apt-get install xorg-dev
sudo apt-get build-dep xscreensaver vlc totem
sudo apt-get source xscreensaver totem -b