CFLAGS=-Wall -Werror
scene.ppm: scene.txt raytracer
	time ./raytracer 600 600 < scene.txt > $@ || (rm $@; false)
	-display $@

raytracer: raytracer.c
	cc $(CFLAGS) -O5 -msse2 -mfpmath=sse $< -lm -o $@