Different sort order regarding NULLs

There is different sort order behavior regarding NULLS in MariaDB and Oracle.

In Oracle:

SELECT * from

(SELECT To_Date(NULL) bt FROM dual UNION ALL SELECT sysdate bt FROM DUAL)

ORDER BY bt

first not null rows retrieved.

In Maria;

SELECT * from

(SELECT CAST(\N AS DATETIME) bt FROM dual UNION ALL SELECT sysdate bt FROM DUAL)

ORDER BY bt

first null rows retrieved.
And also in analytic funkctions where "order by" used.
Is there some setting to change behavior to Oracle manner?
Is it possible to consider sql_mode=oracle?
Now developers are forced to alter application queries while porting from Oracle to Maria. So this is an additional obstacle.