TARGETS=robolock.icns robolock.ico robolock.xpm

PNGS=$(wildcard *.png)
RGBA_PNGS=$(patsubst %,rgba/%,$(PNGS))

.PHONY: all
all: $(TARGETS)
	rm -rf rgba

.PHONY: clean
clean:
	rm -rf rgba
	rm -f $(TARGETS)

.PHONY: install-tools
install-tools:
	echo apt-get install icnsutils icoutils imagemagick

rgba/%.png: %.png
	mkdir -p rgba
	convert $^ PNG32:$@

robolock.icns: $(filter-out %_24.png %_64.png,$(RGBA_PNGS))
	png2icns $@ $^

robolock.ico: $(PNGS)
	icotool --create --output $@ $^

robolock.xpm: robot_32.png
	convert $^ $@