mysql pam_auth problem on MacOs

I tried to use pam auth using mysql client on MacBook. I got the error below using percona/orcale mysql binaries:

mysql -hxxx.yyy.com -p -uUSER
Enter password:
ERROR 2059 (HY000): Authentication plugin 'dialog' cannot be loaded: dlopen(/opt/local/lib/percona/plugin/dialog.so, 2): image not found


How to fix:
You can install mariadb bins from ports collections and use mariadb's mysql bin. But I just copied "mariadb/plugin/dialog.so" lib to my percona's plugin directory. It works fine.