[postgis-users] Undefined symbol "list_length" ? postgis 1.5.3 from FreeBSD ports

[Ben Madin]

G'day all,

trying to install (reinstall) postgis 1.5.3 into postgresql 9.0.4 on FreeBSD7, I am receiving this message :

# \i /usr/local/share/postgis/contrib/postgis-1.5/postgis.sql 
SET
BEGIN
psql:/usr/local/share/postgis/contrib/postgis-1.5/postgis.sql:59: ERROR:  could not load library "/usr/local/lib/postgresql/postgis.so": dlopen (/usr/local/lib/postgresql/postgis.so) failed: /usr/local/lib/postgresql/postgis.so: Undefined symbol "list_length"

I've never seen this one before, and Google is not being very helpful... I'm suspecting it is something about the configuration of postgresql, so I'm rebuilding it, but any ideas would be much appreciated.

FWIW, this was all working previously, and I'm not quite sure why it has now stopped.

cheers

Ben