[herrold@ftp .procmail]$ rpm -ql mysql-devel | grep mysql.h
/usr/include/mysql/history.h
/usr/include/mysql/mysql.h
[herrold@ftp .procmail]$
[herrold@ftp .procmail]$ cat /etc/redhat-release
CentOS release 4.3 (Final)
[herrold@ftp .procmail]$