As part of our company's open source efforts we have made our Ant-based
DocBook 5 publishing tool chain available as an open source project at
http://forgedp.fusesource.org/.It includes the 1.75.1 style sheets, Saxon 6.x, FOP 1.0, and a basic
customization layer all prepackaged and ready to use. There are also Ant
build scripts and a sample library set up. Currently PDF and XHTML are
the two formats with the best support in the tool chain. We have added
stuff to generate Eclipse help and Epub, but those pieces have not been
pushed on too hard.
Currently missing is the Ant build file to build an entire library, but
that should be added pretty soon.
Feel free to use it, make suggestions for improvements, or volunteer to
help out.