This port is a prototype; it is totally unsupported but it seems to work (at least for me ;)
You might have noticed the recent announcement of OpenLDAP release 1.1 at www.OpenLDAP.org web site. The nice thing about that release is that it is the first one using GNU autoconf based configure scripts (the older versions did not do that) and thus gets quite porting-friendly (also for MPE/iX). Being a curious person, I picked up their sources and gave it a try on MPE/iX. As usual, it did need a few adjustments, but it looks like I have a working prototype now.
As I am not an LDAP expert (in fact, I'm a total beginner), I have not tried all the various parts that the OpenLDAP package brings (quite a bunch of servers, gateways, and clients). I have only played with the slapd server (and its associated ldif2ldbm and ldbmcat utilities) and the client tools like ldapsearch or ldapmodify. And please be aware that I said "played" which is quite different from "tested". Remember that all this stuff is "use at your own risk".
Here is a copy of the OpenLDAP 1.1 distribution that I picked up from the site mentioned above...
Here are the diffs from the changes I had to make to build on MPE/iX (configure script not included)...
Here is a package of the files that have been added to allow OpenLDAP on MPE/iX...
And here you can see how to run your own build with above components...
If you do not want to run your own build, you may download the resulting binaries here...
Based on helpful feedback, here are two tiny examples on slapd and ldap client usage...
As always, feedback welcome and best-effort help available (but I'm an LDAPbeginner).
Lars Appel, December 1998 / February 1999 (lappel@grc.hp.com)