mysql install problems

[ant9821]

After emerging mysql, i try to run emerge --config =mysql-5.0.26-r2. After entering the password, I receive the following error:

070425 2:13:58 [ERROR] /usr/sbin/mysqld: unknown variable 'debug=d:t:i,/tmp/mysqld.trace'


!!! ERROR: dev-db/mysql-5.0.26-r2 failed.
Call stack:
ebuild.sh, line 1595: Called qa_call 'pkg_config'
ebuild.sh, line 38: Called pkg_config
ebuild.sh, line 1304: Called mysql_pkg_config
mysql.eclass, line 806: Called die

!!! MySQL databases not installed
!!! If you need support, post the topmost build error, and the call stack if relevant.
!!! A complete build log is located at '/var/tmp/portage/dev-db/mysql-5.0.26-r2/temp/build.log'.

Any help would be appreciated.