xtgk is a demo of a separately compiled and install plugin for graphviz.
To build from CVS, use:
cd xgtk
./autogen.sh
make
make install
To make a distributable version, use:
cd xgtk
./autogen.sh
make dist
zcat xgtk-plugin-0.1tar.gz | tar xf -
cd xgtk-plugin-0.1
./configure
make
make install
To make an rpm:
cd xgtk
./autogen.sh
make rpm