尝试在Mac OSX Lion上安装mysql客户端gem时出现Rails错误

Question

我已经通过MAMP设置了mysql服务器。

但是当试图安装mysql Rails客户端（gem install mysql2）时，我收到以下错误：

   ERROR: Failed to build gem native extension.
    /Users/krisgandhi/.rvm/rubies/ruby-1.9.3-p194/bin/ruby extconf.rb
    checking for mysql_query() in -lmysqlclient... no
    checking for main() in -lm... yes
    checking for mysql_query() in -lmysqlclient... no
    checking for main() in -lz... yes
    checking for mysql_query() in -lmysqlclient... no
    checking for main() in -lsocket... no
    checking for mysql_query() in -lmysqlclient... no
    checking for main() in -lnsl... no
    checking for mysql_query() in -lmysqlclient... no
    checking for main() in -lmygcc... no
    checking for mysql_query() in -lmysqlclient... no
    *** extconf.rb failed ***
    Could not create Makefile due to some reason, probably lack of necessary libraries and/or headers.  Check the mkmf.log file for more details.  You may need configuration options.

Answer 1

我认为你应该从MAMP中删除mysql。并尝试：

brew install mysql

或者从这里安装，找到合适的dmg：

http://dev.mysql.com/downloads/mysql/