0001101: Apache modules not loading

I have several C++ Apache modules which use httpd, apr, gd, and mysql libraries - they all work fine with FC1-FC4 and are built with apxs. I installed Centos4.2 with Apache2.0.52 and apr 0.9.4 and they don't load. The error on Apache restart for one example is:<br /> <br /> httpd failed. The error was: <br /> "Starting httpd: Syntax error on line 193 of /etc/httpd/conf/httpd.conf:<br /> Cannot load /etc/httpd/modules/mod_task1.so into server: /etc/httpd/modules/mod_task1.so: undefined symbol: mysql_init"<br /> <br /> ANY CLUES???