contrib/adddepend

When I run adddepend on my FreeBSD system, I get this:

> /usr/local/bin/adddepend -d usa
install_driver(Pg) failed: Can't locate DBD/Pg.pm in @INC (@INC contains:
/usr/local/lib/perl5/site_perl/5.005/i386-freebsd
/usr/local/lib/perl5/site_perl/5.005 . /usr/libdata/perl/5.00503/mach
/usr/libdata/perl/5.00503) at (eval 1) line 3.
Perhaps the DBD::Pg perl module hasn't been fully installed,
or perhaps the capitalisation of 'Pg' isn't right.
Available drivers: ExampleP, Proxy, mysql.at /usr/local/bin/adddepend line 123

Pg.pm is here:

> locate Pg.pm
/usr/local/lib/perl5/site_perl/5.005/i386-freebsd/Pg.pm

So, it's not in @INC.  I presume this is a problem with my system?  I'm not
100% up with my Perl, so what is the workaround for this?  Is there
something we can put in adddepend itself, or do I have to hack in something
temporarily to put the correct include path?

Chris