all: mlpccg.appcache

appcache>contents = $(shell grep -vFx -e "*" -e "CACHE MANIFEST" -e "CACHE:" -e "NETWORK:" -e "FALLBACK:" $(1) | grep -v -e "^\#" )

mlpccg.appcache: $(call appcache>contents,mlpccg.appcache)
	sed -i '' "s/^# Last-Updated: .*$$/# Last-Updated: `date -u +'%Y-%m-%dT%H:%M:%SZ'`/" $@

CONVERT.svg.png ?= rsvg-convert -f png
CONVERT.png.ico ?= convert

FAVICON_SIZES = 32 57 64 72 76 114 120 144 152 196 256
FAVICONS = $(patsubst %,favicon_%.png,$(FAVICON_SIZES)) favicon.ico

favicon_%.png: favicon.svg
	$(CONVERT.svg.png) -w $* -h $* < $< > $@

%.ico: %_48.png %_32.png %_24.png %_64.png %_16.png
	$(CONVERT.png.ico) $^ $@

all: $(FAVICONS) mlpccg.appcache

clean:
	$(RM) $(FAVICONS)