LDAPget installation


I’ve got a problem about the LDAPget module. When I try to load it, Asterisk can’t start anymore.
There’s a warning : " liblber-2.3.so.0 : cannot open shared object file : No such file or directory.
But this file is in usr/local/lib.
How could I show a path to Asterisk or where could I put the file in order that Asterisk detect it?

The version of Asterisk I’m running is 1.2.13. I’m on a Debian 3.1r2 and the version of LDAPget is 1.0rc6.