Oscar> First check the manpages. If you don't find anything about Oscar> ldap_set_option then you can try to undefine Oscar> HAVE_LDAP_SET_OPTION in the file eldap.c and recompile it. Raymond> I'll try this in a few minutes. Raymond> This doesn't work. gcc complains that I'm dereferencing a pointer to Raymond> an incomplete type on lines 319 of eldap.c. This is true. I can't, Raymond> for the life of me, actually find out where struct ldap is really Raymond> defined. The only hint is in /usr/include/ldap.h where a comment says Raymond> LDAP is the opaque connection type. No kidding! Raymond> The manpage for ldap_open gives an example for the elements of struct Raymond> ldap, but I can't find that in any include file. I second that. In its current state, Sun's LDAP implementation seems to be fairly unusable : manpages and header files are inconsistent and ldap.h doesn't provide neither a definition of struct ldap nor a prototype for ldap_set_option. Sigh... Raymond> Oh well, if this is true, I think we'll have to put something in Raymond> configure so that we DON'T use Sun's ldap on Solaris 2.7. (I hope I Raymond> didn't miss anything.) I fear this is going to be really difficult: I must find some sure way of identifying this particular implementation. I'll give it a look. Oscar