Ok,
Here is what I turned up. You can determine what postgres considers '$libdir' by executing:
[service] pg_config --pkglibdir
If, for some reason you have different bits of postgres installed in different places ( say if someone installed an rpm, but you had to go back to source to install OpenFTS ), then you might find yourself in this situation.
In my case, postgres libraries were installed in
/usr/lib/pgsql
and
/usr/lib/postgres
Copying the contents of /usr/lib/postgres to /usr/lib/pgsql solved my problem.
There were not many google hits for
'tsearch2 postgres libdir pkglibdir'
_jason
