./configure --with-openldap not working

[natxete@asenjo.nl (Natxo Asenjo)]

hi,

while trying to build the latest heimdal-kdc I notice that it does not
find the installed openldap.

#  ./configure --with-openldap --prefix=/usr/local

I see that it it sees openldap no in the terminal, but I go on and make
it.
# make
# make install

everything works fine but when I do a ./kdc builtin-hdb I just get

builtin hdb backends:

This is running a stock debian sarge slapd (2.2.23)
Any tips as to what path I should give to --with-openldap= ?
-- 
Groeten,
J.I.Asenjo