rails 4 安裝gem install mysql 報checking for main() in -llibmysql... no錯

1、http://dev.mysql.com/downloads/mysql/  這個地址下載符合自己系統的mysql installer

2、安裝

3、運行 gem install mysql --platform=ruby -- '--with-mysql-lib="C:\mysql-connector-c-6.1.3-winx64\lib" --with-mysql-include="C:\mysql-connector-c-6.1.3-winx64\include" --with-mysql-dir="C:\mysql-connector-c-6.1.3-winx64" '

 如果不行，嘗試運行 gem install mysql --platform=ruby -- '--with-mysql-dir="C:\mysql-connector-c-6.1.3-winx64"'

get from Moshe Katz's answer  ,link is  http://stackoverflow.com/questions/19014117/ruby-mysql2-gem-installation-on-windows-7