More SCO funnies

Ok so thanks to Larry I managed to get postgresql compiled and running
on SCO. Now I'm trying to compile a small 'C' program. When I link I get

cc -L/usr/local/pgsql/lib -lpq -lm -o t_postgresql t_postgresql.o
post_util.o
undefined                       first referenced
  symbol                             in file
PQexec                              t_postgresql.o
PQclear                             t_postgresql.o
PQfinish                            t_postgresql.o
PQresultStatus                      t_postgresql.o
PQcmdTuples                         t_postgresql.o
PQntuples                           t_postgresql.o
PQgetvalue                          t_postgresql.o
PQftype                             t_postgresql.o
PQfmod                              t_postgresql.o
PQnfields                           t_postgresql.o
PQfname                             t_postgresql.o
PQsetdbLogin                        t_postgresql.o
PQstatus                            t_postgresql.o
floor                               post_util.o
i386ld fatal: Symbol referencing errors. No output written to t_postgresql

Larry, can you work your magic again?