--- /dev/null
+DIAGRAMS:=overview
+FORMATS:=svg png
+
+.PHONY: default
+default: $(foreach diagram,$(DIAGRAMS),$(foreach ext,$(FORMATS),$(diagram).$(ext)))
+
+$(foreach ext,$(FORMATS),%.$(ext)): %.dot
+ $(foreach ext,$(FORMATS),circo -T$(ext) $^ -o $*.$(ext);)