Test after build fails on Linux/390

["Ken Hall" <kehall@exchange.ml.com>]

We're trying to build OpenLDAP 2.1.3 on a Linux/390 system, under SuSE SLES
7.

Everything builds fine, but when we try to run tests, slapd fails to start,
and we get the following in master.log:

bdb_db_open: dbenv_open(./test-db)
bdb(o=OpenLDAP Project,l=Internet): architecture lacks fast mutexes:
applications cannot be threaded
bdb_db_open: dbenv_open failed: Invalid argument (22)
backend_startup: bi_db_open(0) failed! (22)
slapd shutdown: initiated
====> bdb_cache_release_all

Can anyone help?

Thanks.