Can't INSTALL ha_connect.so on Mac OS 10.10.5

Using Homebrew to install MariaDB 10.1.12 supplies some binary storage engines in /usr/local/Cellar/mariadb/10.1.12/lib/plugin, including ha_connect.so.

However, executing "INSTALL PLUGIN connect SONAME 'ha_connect.so';" results in the following error message: "Can't open shared library '/usr/local/Cellar/mariadb/10.1.12/lib/plugin/ha_connect.so' (errno: 13, dlopen(/usr/local/Cellar/mariadb/10.1.12/lib/plugin/ha_connect.so, 2): no suitable image found. Did find: /usr/local/Cellar/ma)"

Here is info for the shared object:

# ls -l ha_connect.so

-r--r-----  1 _mysql  admin  895312 24 Feb 06:25 ha_connect.so

# file ha_connect.so

Mach-O 64-bit bundle x86_64

# sum ha_connect.so

48738 875 ha_connect.so

How can I get CONNECT working?