[Konstantinos]

Q: I get a Failed (plugins/mysql.so: symbol __cxa_pure_virtual, version libmysqlclient_16[...] error, is there any way to fix it?
A: That likely means that you are using a 64bit system and thus a 64bit libmysqlclient library. You'll have to use the static version of the plugin, the mysql_static.so.

And re-name to "Whirlpool.so" because the case matters in Linux.