Make a Mac app icon from an image

icns-Makefile

ICON?=	bigimage.png
NAME:=	myapp

SIPS:=	sips --setProperty format png --setProperty formatOptions best

$(NAME).iconset: $(ICON)
	$(SIPS) -Z 16 $(ICON) --out $(NAME)-16x16.png
	$(SIPS) -Z 32 $(ICON) --out $(NAME)-32x32.png
	$(SIPS) -Z 64 $(ICON) --out $(NAME)-64x64.png
	$(SIPS) -Z 128 $(ICON) --out $(NAME)-128x128.png
	$(SIPS) -Z 256 $(ICON) --out $(NAME)-256x256.png
	$(SIPS) -Z 512 $(ICON) --out $(NAME)-512x512.png
	$(SIPS) -Z 1024 $(ICON) --out $(NAME)-1024x1024.png
	mkdir -p $(NAME).iconset
	cp -n $(NAME)-16x16.png $(NAME).iconset/icon_16x16.png
	cp -n $(NAME)-32x32.png $(NAME).iconset/icon_16x16@2x.png
	cp -n $(NAME)-32x32.png $(NAME).iconset/icon_32x32.png
	cp -n $(NAME)-64x64.png $(NAME).iconset/icon_32x32@2x.png
#	cp -n $(NAME)-64x64.png $(NAME).iconset/icon_64x64.png
#	cp -n $(NAME)-128x128.png $(NAME).iconset/icon_64x64@2x.png
	cp -n $(NAME)-128x128.png $(NAME).iconset/icon_128x128.png
	cp -n $(NAME)-256x256.png $(NAME).iconset/icon_128x128@2x.png
	cp -n $(NAME)-256x256.png $(NAME).iconset/icon_256x256.png
	cp -n $(NAME)-512x512.png $(NAME).iconset/icon_256x256@2x.png
	cp -n $(NAME)-512x512.png $(NAME).iconset/icon_512x512.png
	cp -n $(NAME)-1024x1024.png $(NAME).iconset/icon_512x512@2x.png

$(NAME).icns: $(NAME).iconset
	iconutil -c icns $(NAME).iconset

.PHONY: cleanup
cleanup:
	rm -f $(NAME)-*x*.png
	rm -rf $(NAME).iconset
	rm -rf .DS_Store

.PHONY: clean
clean: cleanup
	rm -f $(NAME)-*.png
	rm -rf $(NAME).icns