CC=gcc CFLAGS=-O2 -lbufro -lX11 -lGL -lGLU -lglfw -lm quickstart: quickstart.c $(CC) quickstart.c $(CFLAGS) -o quickstart alpha: alpha.c $(CC) alpha.c $(CFLAGS) -o alpha polygon: polygon.c $(CC) polygon.c $(CFLAGS) -o polygon