docbook_docs = guadec_gtkmm.xml

DOCBOOK_STYLESHEET ?= http://docbook.sourceforge.net/release/xsl/current/html/chunk.xsl

# The new XML DocBook way:
html/index.html: $(docbook_docs)
	-rm -rf html
	mkdir html
	xsltproc -o html/ --catalogs $(DOCBOOK_STYLESHEET) $<