IMAGES = gwt-widgets SRCIMAGES := $(foreach file, $(IMAGES), $(file).svg) TRGIMAGES_HI := $(foreach file, $(IMAGES), ../img/$(file)-hi.png) TRGIMAGES_LO := $(foreach file, $(IMAGES), ../img/$(file)-lo.png) images: $(TRGIMAGES_HI) FORCE # Just do low now $(TRGIMAGES_LO) $(TRGIMAGES_HI): ../img/%-hi.png: %.svg inkscape --export-png $@ --export-dpi=150 --export-area-drawing $< FORCE: