Hi,
I followed part of that, can't profess to be an expert in library interaction and such, sorry. I am not sure really what to do next. Most of the libraries I got from standard installs off the ubuntu repos, are we talking fairly significant compilation of other stuff do you think?
remove the openldap2-dev package grab the latest openldap source from their page (or mirror) , ./configure, make, make install (it'll all go into /usr/local/ ) then redo the freeradius configure stuff..... should pick up the local openldap dev stuff. ensure tht the local openldap library is known (output of ldconfig -v shows it....may need to add the /usr/local/lib as first path in /etc/ld.so.conf make ; make install - when you do the ldd stuff against rlm_ldap.so it should show openssl linkage instead alan