If you go into the apr-util directory and run ./configure --help, among other things it will tell you:
--with-ldap-include=path path to ldap include files with trailing slash --with-ldap-lib=path path to ldap lib file --with-ldap=library ldap library to use
random note:
it would be useful if ./configure --help for Apache would also display apr and apr-util --help screen if the Apache configure is going to configure apr and apr-util as well
I've noticed a PR or two that could have been prevented by this
