How to success "gem install mysql" on windows (tested windows 8 x64)

Assumption that you installed ruby:

1. Download mysql binary
2. Run cmd>gem install mysql-2.9.1.gem -- --with-mysql-include=F:\Programs\Sun\mysql-5.6.20-winx64\include -- --with-mysql-lib=F:\Programs\Sun\mysql-5.6.20-winx64\lib

With mysql-2.9.1.gem from https://rubygems.org/gems/mysql.

Screen: