Problem installing PHP with --with-system-regex flag

I'm having trouble getting php to run with the --with-system-regex flag. I'm trying to use PHP in conjuction with MapScript, a shared objects module for use with MapServer. However, because of some issues with PHP 4 regex extension, it requires I use the system regex. So, I compiled PHP 4 --with-system-regex, but this breaks my web server, Apache 2.0, running on RedHat 7.2. When trying to restart Apache I get the following error... Cannot load /usr/modules/libphp4.so into server: /usr/modules/libphp4.so: undefined symbol: php_regcomp So, I'm not sure what is happening here. Since I've trying to use the system regex, is libphp4.so looking for regcomp and not finding it on my system? Or is it trying to find php_regcomp? Or what? Any help would be GREATLY appreciated. Jeff Berry Erlandsen & Associates P.O. Box 2029 Chelan, WA 98816 (509) 682-4189 jeffb@erlandsen.com