This page https://mariadb.com/kb/en/mariadb/documentation/nosql/dynamic-columns-api/ does not mention anything about it. it  just says

The API is a part of libmysql C client library. In order to use it, one needs to include this header file

#include <mysql/ma_dyncol.h>

and link against libmysql.

Now can ma_dyncol.h be linked against libmaria as well?

There are 2 questions actually

1) technical: will it work with libmaria? 

2) legal: can a client program using libmaria under LGPL license include ma_dyncol.h?

-- Peter

-- Webyog