$ make
make	-C enet/ all
make[1]: Entering directory `/home/zachary/Programs/sauerbraten/src/enet'
make[1]: Nothing to be done for `all'.
make[1]: Leaving directory `/home/zachary/Programs/sauerbraten/src/enet'
g++ -O3 -fomit-frame-pointer -Wall -fsigned-char -Ishared -Iengine -Ifpsgame -Ienet/include -I/usr/X11R6/include `sdl-config --cflags` -o shared/cube.h.gch.tmp shared/cube.h
shared/cube.h:46: fatal error: SDL_image.h: No such file or directory
compilation terminated.
make: *** [shared/cube.h.gch] Error 1