Gem在Snow Leopard中安装mysql失败
我在Snow Leopard中成功安装了MySql x86_64，并且Ruby和Ruby Gems似乎已正确安装：
$ which mysql /usr/local/mysql/bin/mysql $ which ruby /usr/bin/ruby $ which gem /usr/bin/gem $ mysql Your MySQL connection id is 404 Server version: 5.1.37 MySQL Community Server (GPL) $ ruby -v ruby 1.8.7 (2008-08-11 patchlevel 72) [universal-darwin10.0] $ gem -v 1.3.5
不幸的是，我安装mysql gem时出现错误：
$ sudo gem update --system
...
$ sudo env ARCHFLAGS="-arch x86_64" gem install mysql -- --with-mysql-config=/usr/local/mysql/bin/mysql_config
Building native extensions. This could take a while...
ERROR: Error installing mysql:
ERROR: Failed to build gem native extension.
/System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/bin/ruby extconf.rb --with-mysql-config=/usr/local/mysql/bin/mysql_config
mkmf.rb can't find header files for ruby at /System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/lib/ruby/ruby.h
Gem files will remain installed in /Library/Ruby/Gems/1.8/gems/mysql-2.8.1 for inspection.
我认为你应该在重新编译之前先尝试卸载旧的mysql gem
sudo gem uninstall mysql
sudo env ARCHFLAGS="-arch x86_64" gem install mysql -- --with-mysql-config=/usr/local/mysql/bin/mysql_config
安装与Snow Leopard捆绑在一起的Xcode解决了这个问题。
对我来说，它添加了UNIX工具选项（如果我准确地调用了该名称），其中包括标题。 当我最初安装XCode时，我没有包含这个组件，因为我不认为我会编写UNIX代码。 我知道的很少...
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