PHP --with-imap

[Craig Jackson <cjackson@localsurface.com>]

I have a Debian woody computer with exim and qpopper. They work well
using starttls. Now I want to experiment with imap using imp/horde. So I
installed Cyrus-imapd using apt and libc-client2001 using apt and Mysql
from source. I downloaded PHP4.3.1 and Apache 1.3.27 which I want to
compile from source. When I configure PHP4.3.1 using these options

--with-mysql 
--with-imap=/usr/lib/ 
--with-apache=/usr/local/src/apache_1.3.27 
--with-mcrypt 
--enable-track-vars

I get this error:

configure: error: Cannot find imap library (libc-client.a). Please check
your IMAP installation.

libc-client2001 is in /usr/lib/ but libc-client.a is nowhere on the
system. Hints please.

Thanks,
-- 
Craig Jackson <cjackson@localsurface.com>