As adu is based on libosl, the object storage layer, you first have
to install http://people.tuebingen.mpg.de/maan/osl/ (libosl).

Adu's command line parser and the interactive help are generated by
http://www.gnu.org/software/gengetopt/gengetopt.html (gnu gengetopt).
Hence the gengetopt package must be installed to compile adu from
source.

In order to generate the man page,
ftp://ftp.gnu.org/pub/gnu/help2man (help2man)
must be installed. For the html version of the man page,
http://www.triptico.com/software/grutatxt.html (grutatxt) is used.