The revision log for the files various Win32 "canned config files" win32/config_H.* suggest that they are updated manually and sporadically. As best I can tell each is generated from a corresponding config file using win32/config_h.PL, and I assume ideally is supposed to be in sync. win32/config_h.PL is actually portable. Would it make sense to do the regeneration as part of regen.pl, and (therefore) keep all the canned headers up to date automatically? Nicholas ClarkThread Next