OPD driver for Mysql

Hello,

I shuld install the OPD driver for Mysql in php.

I have add

--enable-pdo=shared \
--with-pdo-mysql=shared,/usr/local/mysql \
--with-sqlite=shared \
--with-pdo-sqlite=shared \

in /usr/local/directadmin/custombuild/configure/suphp/configure.php5

but the directory of mysql, is wrong

what is the default mysql directory with directadmin??

ThankYou

Sandro

mmm... also tried to put /usr/share/mysql but the error is

checking for mysql install under /usr/share/mysql... can not find it
configure: error: Unable to find your mysql installation

*** There was an error while trying to configure php. Check the configure/suphp/configure.php5 file