Cannot load libphp4.so v4.0.1pl2

I get the following error when I start Apache with php-4.0.1pl2: Starting httpsd: Syntax error on line 246 of /etc/httpd/conf/httpsd.conf: Can't locate API module structure 'php4_module' in file /etc/httpd/modules/libphp4.so: /etc/httpd/modules/libphp4.so: undefined symbol: php4_module Line 246 of httpsd.conf is: LoadModule php4_module modules/libphp4.so This line hasn't changed since previous versions. This is my configuration: ./configure --with-apxs=/usr/sbin/apxs \ --enable-EAPI \ --enable-versioning \ --enable-calendar \ --with-config-file-path=/etc/httpd/conf \ --with-mm \ --with-mysql \ --with-iodbc=/usr/lib \ --with-unixODBC=/usr/lib \ --with-java=/usr/jdk118 \ --with-snmp \ --with-openssl \ --with-imagick \ --with-exif \ --with-zlib \ --with-GDBM \ --with-NDBM \ --with-dbase \ --with-filepro \ --with-ldap \ --with-xml \ --with-wddx \ --with-dom=/usr/lib/libxml.so \ --with-servlet=/usr/local/JSDK2.0 \ --with-java=/usr/jdk118 \ --with-ttf \ --with-tiff \ --with-jpeg \ --with-ftp \ --enable-track-vars \ --disable-debug Anyone have any clues as to what would cause this? Regards, Jack