help compiling ldap support in sylpheed claws 0.9.3

[bsd_junkie]

How can i make ./configure find my openldap install?

I am trying to install sylpheed claws on freebsd 5.1 ....with ldap 
support but configure does not seem to find what it needs because when 
configure is done openldap = no  is present.

sylpheed 0.9.3claws

GnuPG         : yes
JPilot        : yes
LDAP          : no
OpenSSL       : yes
iconv         : yes
compface      : no
IPv6          : yes
GNU/aspell    : yes
Crash dialog  : no
Plugins       : dillo-viewer image-viewer(gdk-pixbuf) spamassassin trayicon
Config dir    : .sylpheed


I installed openldap from the ports.

# find / -name openldap
/usr/local/etc/openldap
/usr/local/share/openldap

as you can see above its installed. I have tried    
PKG_CONFIG_PATH=/usr/local/etc/openldap

but that does not work.

Thanks in advance