SCRIPT=/tmp/muhahaha
SHELL=/bin/sh
all:help
help:
	echo Known targets:
	echo convert - converts all PPMs to BMPs. Requires ppmtobmp on $PATH.
	echo cleanppm - removes all PPMs.
	echo distclean - removes all images.
convert:
	find . -name '*.ppm' -exec echo "ppmtobmp {} > {}.bmp" \; > ${SCRIPT}
	${SHELL} ${SCRIPT}
	rm ${SCRIPT}
cleanppm:
	find . -name '*.ppm' -exec rm {} \;
cleanbmp:
	find . -name '*.bmp' -exec rm {} \;
distclean:cleanppm cleanbmp