无法构建gem本机扩展（Windows）

Question

I have tried to install mysql2 on windows, but it output an error:

Failed to build gem native extension.

I have installed Devkit, and have tested

gem install json --platform=ruby

ruby -rubygems -e "require 'json'; puts JSON.load('[42]').inspect"

both of them work fine, but I cannot install any other gems beside json.

Answer 1

To build mysql2 gem on Windows you should use the MySQL C Connector that can be found here . You should unzip the folder and do this in cmd/powershell:

gem install mysql2 -- --with-mysql-dir={DIRECTORY OF THE CONNECTOR}

Read this for a full guide.