Hey, thanks for sharing. I used your approach and I would still get the lazy symbol binding failed . What did the trick in my case was adding the following line to my .bundle/config file:

BUNDLE_BUILD__MYSQL2: "--with-mysql-config=/usr/local/Cellar/mariadb-connector-c/2.2.2/bin/mariadb_config --with-ldflags=-L/usr/local/opt/openssl/lib --with-cppflags=-I/usr/local/opt/openssl/include"