all: d3.js d3.layout.js

d3version=2.4.3

d3.%: .d3/d3-$(d3version) Makefile
	echo '/* $@ - Data Driven Documents' > $@
	echo ' * Version: $(d3version)' >> $@
	echo ' * Homepage: http://mbostock.github.com/d3/' >> $@
	echo ' * Copyright: 2010, Michael Bostock' >> $@
	echo ' * Licence: 3-Clause BSD' >> $@
	echo ' *' >> $@
	sed 's/./ * &/' $</LICENSE >> $@
	echo ' */' >> $@
	cat $</$@ >> $@
.d3/d3-%.tar.gz: Makefile
	mkdir -p $(@D)
	wget https://github.com/mbostock/d3/tarball/v$* -O $@
.d3/d3-%: .d3/d3-%.tar.gz Makefile
	mkdir -p $<.d
	cd $<.d && tar xzf ../d3-$*.tar.gz
	mv $<.d/*/ $@