Using the latest git clone on 31 Mar 2011.
According to the instructions at http://jogamp.org/jogl/doc/HowToBuild.html, the last step is to build the javadoc by running "ant javadoc". However, this fails:
MacLap:make robertbaruch$ ant javadoc
Target "javadoc" does not exist in the project "JOGL_ALL".
Total time: 0 seconds
The correct command appears to be "ant javadoc.all".