gcc-10 -Wall -lm -static -DEVAL -o snake -O2 snake.c gslib_iface.c
g++-10 -Wall -lm -static -DEVAL -o snake -O2 snake.cpp gslib_iface.cpp
g++-10 -Wall -lm -static -DEVAL -o snake -O2 snake.cpp gslib_iface.cpp -std=c++11
g++-10 -Wall -lm -static -DEVAL -o snake -O2 snake.cpp gslib_iface.cpp -std=c++14
g++-10 -Wall -lm -static -DEVAL -o snake -O2 snake.cpp gslib_iface.cpp -std=c++17