openldap-2.3.19 with LDBM support using a an HP DS20 with Tru64 UNIX?

["Joan Cambras" <jcambras@cesca.es>]

Hi all,
 
I'm trying to build openldap-2.3.19 with LDBM support using a an HP DS20 with Tru64 UNIX and I'm getting the following error while configuring:

>>./configure --prefix=$PREFIX --enable-ldbm=yes --enable-ldbm-api=berkeley \
        --enable-bdb=no --enable-hdb=no --enable-crypt=yes 2>&1 | tee configure.log

>>tail configure.log
checking number of arguments of gethostbyaddr_r... 0
checking db.h usability... yes
checking db.h presence... yes
checking for db.h... yes
checking for Berkeley DB major version... 1
checking for Berkeley DB minor version... 0
checking for Berkeley DB link (-ldb1)... no
checking for Berkeley DB link (-ldb-1)... no
checking for Berkeley DB link (default)... no
configure: error: could not find suitable LDBM backend

And still the libraries for LDBM are there:

/usr/lib/libdb.a
/usr/lib/libdbm.a

Any ideas?

Thanks for your help,
Joan