all: allzips

allzips: ./tar2zip
	@find . -type f -name \*.tar.gz | sed 's/tar.gz$$/zip/' | xargs $(MAKE)

%.zip: %.tar.gz
	@#tar -Ozxvf $? | zip > $@  # no zip executable installed here
	./tar2zip $? > $@

./tar2zip: /home/rp/bin/tar2zip
	@cp $? $@