Building modules distributed with Apache, using ports

[Jonathan McKeown]

This may be a daft question. I freely admit it's a lazy one - I'm hoping 
someone has a quick answer that'll save me a couple of hours building a test 
server and experimenting.

I built apache 2.0 from ports, using WITH_LDAP - but not WITH_LDAP_MODULES, as 
the Makefile.doc says it's implied by WITH_LDAP. As far as I can tell it's 
actually the other way round, that WITH_LDAP_MODULES triggers the WITH_LDAP 
options (either that or I didn't set it properly).

Be that as it may, I now have an installation of Apache to which I need to add 
mod_auth_ldap and mod_ldap from the Apache 2.0 distribution.

Is it possible to use the www/apache20 port to build these, or additional 
modules generally, without rebuilding/reinstalling Apache itself?

Jonathan