Mysql gem 安装失败

mysql gem 安装

系统：OS X 10.6.8

Ruby：1.8.7

rails：2.3.x

bundle install 出现

Building native extensions.  This could take a while...
ERROR:  Error installing mysql2.8.1:
    ERROR: Failed to build gem native extension.

参照帖子：http://www.petermac.com/installing-mysql-gem-on-osx-10-6/

主要步骤

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1 删除原有sql 

sudo rm /usr/local/mysql
sudo rm -rf /usr/local/mysql*
sudo rm -rf /Library/StartupItems/MySQLCOM
sudo rm -rf /Library/PreferencePanes/My*
edit /etc/hostconfig and remove the line MYSQLCOM=-YES-
sudo rm -rf /Library/Receipts/mysql*
sudo rm -rf /Library/Receipts/MySQL*

* 这步骤被误导，没有删除干净，导致重新安装64位的mysql只是表现的安装成功了，实际并没有安装 /usr/local/mysql 不存在

还应该执行

sudo rm -rf /private/var/db/receipts/*mysql*

sudo rm -rf /private/var/db/receipts/com.mysql.*

参见：http://akrabat.com/computing/uninstalling-mysql-on-mac-os-x-leopard/

2 重新安装mysql

Don’t use MySQL 5.5, use 5.1 from http://dev.mysql.com/downloads/mysql/5.1.html (get the .dmg)

3 安装gem 

sudo env ARCHFLAGS="-arch x86_64" gem install mysql -- --with-mysql-config=/usr/local/mysql/bin/mysql_config