http://developer.gnome.org/doc/tutorials/helpsys.html

[Karl Eichwalder <ke gnu franken de>]

Instead of 

    $prefix/share/gnome/help/<appname>/C/topic.dat

please write

    $datadir/gnome/help/<appname>/C/topic.dat

-- 
                                             work   :        ke@suse.de
Karl Eichwalder                              private: ke@gnu.franken.de