eXdbm was not developed by the gpsim developers. It is only included with the gpsim distribution to make it easier to build gpsim. We do not intend to maintain or enhance this package in anyway specific to gpsim. If you find a bug in here, please contact either us or the eXdbm developers and we'll make sure the next version is fixed. gpsim version 0.20.14 Starting with this version, eXdbm will now be distributed as part of gpsim. The purpose for this is to simplify install issues that gpsim users have had with eXdbm in the past. Also, a few minor bugs have been fixed with eXdbm by the gpsim development team. Unfortunately, the original authors do not appear to be supporting eXdbm any longer (hmm, that's probably a hint). eXdbm, like gpsim, is licensed under GPL.