Compilation error

I've recently taken over running an old linux machine and I want to put PHP 4.0.6 on it. Everything goes fine until the 'make' of php where I then get the following error gcc -I. -I/usr/src/php-4.0.6/ext/standard -I/usr/src/php-4.0.6/main -I/usr/ src/php-4.0.6 -I/usr/src/apache_1.3.20/src/include -I/usr/src/apache_1.3.20/ src/os/unix -I/usr/src/php-4.0.6/Zend -I/usr/src/php-4.0.6/ext/mysql/libmysq l -I/usr/src/php-4.0.6/ext/xml/expat/xmltok -I/usr/src/php-4.0.6/ext/xml/exp at/xmlparse -I/usr/src/php-4.0.6/TSRM -DSUPPORT_UTF8 -DXML_BYTE_ORDER=12 -g -O2 -c filestat.c && touch filestat.lo filestat.c: In function `php_if_diskfreespace': filestat.c:157: storage size of `buf' isn't known make[3]: *** [filestat.lo] Error 1 I upgraded the GNU fileutils hopeing that was the issue, but it wasn't. Can anyone offer any suggestions? Tim