Mine

mulk mysql # emerge --config dev-db/mysql


Configuring pkg...

 * MySQL MY_DATADIR is //srv/localhost/mysql/datadir
 * Creating the mysql database and setting proper
 * permissions on it ...
 * Insert a password for the mysql 'root' user
 * Avoid ["'\_%] characters in the password
    >
 * Retype the password
    >

!!! ERROR: dev-db/mysql-5.0.42 failed.
Call stack:
  ebuild.sh, line 1602:   Called qa_call 'pkg_config'
  ebuild.sh, line 44:   Called pkg_config
  ebuild.sh, line 1311:   Called mysql_pkg_config
  mysql.eclass, line 808:   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-5.0.42/temp/build.log'.