MYSQL_VERSION_ID?

I've a Redhat9 and installed MySQL 4.0 from source and Apache 1.3 from source. I also downloaded the PHP5.0.2 source and attempted to compile it. Apache and MySQL are installed successfully, as they all work without any noticeable errors. This is how I configured PHP5 ./configure --prefix=/PHP5 --with-mysql=<mysql path> when I ran "make", I got an error. It was regarding one of the functions, make tried to compile mysql_create_db and mysql_drop_db(functions that are no longer provided by the MySQL4.0 client). When I checked the source code(the c and h files), there was this line, #if MYSQL_VERSION_ID < 40000 which was enclosed in the declaration of the function prototypes PHP_FUNCTION(mysql_create_db) PHP_FUNCTION(mysql_drop_db) in php_mysql.h and also around the implemention of the functions PHP_FUNCTION(mysql_create_db) PHP_FUNCTION(mysql_drop_db) in php_mysql.c The problem I seem to have is that MYSQL_VERSION_ID is never defined? Perhaps this is due to the fact that I compiled MySQL 4.0 from source and may have skipped a step... but where is MYSQL_VERSION_ID supposed to be defined or retrieved? typing echo $MYSQL_VERSION_ID in bash got me a blank line. I managed to comment out those functions in the header and the c files and "make" and "make install" ran flawlessly. Could this be a bug? -Mark