php5.0.3 compile problem "cannot find libz"

Hello, I have PHP5 running but wanted to recompile for mysql support. ./configure --prefix=/usr/local/php5 --with-apxs2=/usr/local/apache2/bin/apxs --with-libxml-dir=/usr/lib --with-mysql=/usr/local/mysql it complained about libz so I added --with-zlib-dir as: ./configure --prefix=/usr/local/php5 --with-apxs2=/usr/local/apache2/bin/apxs --with-libxml-dir=/usr/lib --with-mysql=/usr/local/mysql --with-zlib-dir=/usr/lib And so configure errors out on "Cannot find libz" my /usr/lib contains: zlib.so, libz.so.1 .. Can anyone tell me what I need to do on my ./configure to get rolling? This PHP is currently running with Apache2.. I am running MySQL5 as well.. my working PHP install was configured using the first configure statement in this email minus --with-mysql.. working just fine.... Thanks Kris -- No virus found in this outgoing message. Checked by AVG Anti-Virus. Version: 7.0.300 / Virus Database: 266.4.0 - Release Date: 2/22/05