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安装了mysql服务器。

但是，当尝试安装mysql Rails客户端（gem安装mysql2）时，出现以下错误：

  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

我认为您应该从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/