Achilleas Mantzios <achill@matrix.gatewaynet.com> writes:
> tsearch2 support is included in the 9.1 distribution. No need for any additional packages.
> However, if you need to use the old functions, then you will have to install the
> "Backwards-compatibility package for old contrib/tsearch2 API"
> in <path_to_your_source>/contrib/tsearch2/
> gmake
> gmake install
> then
> psql -f <path_to_your_source>/contrib/tsearch2/sql/tsearch2.sql
I think part of the OP's problem is that that advice is obsolete.
In 9.1 you'd do "CREATE EXTENSION tsearch2", not feed a file to
psql manually.
But the bigger picture is that pre-8.3 tsearch2 is obsolete and you
should be trying to get rid of it not port it. See
http://www.postgresql.org/docs/9.1/static/textsearch-migration.html
regards, tom lane