Compiling PHP4.0.6 in Freebsd 4.3 --> sapi_apache.c gives an error

Got this really strange error message when compiling PHP for apache 2.0.16. Any ideas? thanks Making all in apache /bin/sh /root/temp/php-4.0.6/libtool --silent --mode=compile gcc -I. - I/root/temp/php-4.0.6/sapi/apache -I/root/temp/php-4.0.6/main - I/root/temp/php-4.0.6 -I/usr/local/include/apache -I/root/temp/php- 4.0.6/Zend -I/usr/local/include -I/root/temp/php-4.0.6/ext/mysql/libmysql - I/root/temp/php-4.0.6/ext/xml/expat/xmltok -I/root/temp/php- 4.0.6/ext/xml/expat/xmlparse -I/root/temp/php-4.0.6/TSRM - DNO_DBM_REWRITEMAP -DSUPPORT_UTF8 -DXML_BYTE_ORDER=12 -g -O2 -c sapi_apache.c sapi_apache.c: In function `apache_php_module_main': sapi_apache.c:80: `NOT_FOUND' undeclared (first use in this function) sapi_apache.c:80: (Each undeclared identifier is reported only once sapi_apache.c:80: for each function it appears in.) *** Error code 1 Stop in /root/temp/php-4.0.6/sapi/apache. *** Error code 1 Stop in /root/temp/php-4.0.6/sapi/apache. *** Error code 1 Stop in /root/temp/php-4.0.6/sapi. *** Error code 1 Stop in /root/temp/php-4.0.6.