asterisk users - Apr 2004 - CVS head on FreeBSD 4.9 will not compile

The latest recursive mutex additions in Asterisk will not compile on my
FreeBSD 4.9 systems. Anyone out there with FreeBSD or OpenBSD that got it
working?

I guess I need an update to Gnu Pthreads, but can't find anything by looking
in ports. There's something called linuxthreads, but it's over my head
to
understand if that helps or not.

See bug http://bugs.digium.com/bug_view_page.php?bug_id=0001411

We need to solve this to be able to move ahead with *BSD ports.

/O