sudo apt-get install freeglut3-dev
sudo apt-get install
gcc gl.c -o test -I /usr/include/SDL2/ -I /usr/include/GL/ -lSDL2 -lGL
sudo apt-get install freeglut3-dev
sudo apt-get install
gcc gl.c -o test -I /usr/include/SDL2/ -I /usr/include/GL/ -lSDL2 -lGL