Riccardo,

> After some working I get:
> ===> configuring for pkg_install-20030111
> --mandir=: not found
> /man: not found
> *** Error code 127
> 
> and it stops. SO now some help would be appreciated.

Make's error messages are not always informative.  In this case, it's
very like that you have broken Pkgsrc tree.  Could you elaborate how
did you get this situation?  E.g. how did you get your Pkgsrc tree?

Masao