我'm not able to require EventMachine in a simple test program. I'运行Ruby 1.9.2（x86_64-darwin10.4.0）和Rails 3.0.1 . EventMachine已安装（通过 gem install eventmachine ），gem知道它：
gem list --local
*** LOCAL GEMS ***
abstract (1.0.0)
...
erubis (2.6.6)
eventmachine (0.12.10)
i18n (0.4.2)
...
tzinfo (0.3.23)
然而，当我启动rails控制台（通过 rails console ）并且只需要eventmachine时，它会爆炸：
ruby-1.9.2-p0 > require 'rubygems'
=> nil
ruby-1.9.2-p0 > require 'eventmachine'
LoadError: no such file to load -- eventmachine
from /Users/russ/.rvm/gems/ruby-1.9.2-p0/gems/activesupport-3.0.1/lib/active_support/dependencies.rb:239:in 'require'
from /Users/russ/.rvm/gems/ruby-1.9.2-p0/gems/activesupport-3.0.1/lib/active_support/dependencies.rb:239:in 'block in require'
from /Users/russ/.rvm/gems/ruby-1.9.2-p0/gems/activesupport-3.0.1/lib/active_support/dependencies.rb:225:in 'block in load_dependency'
from /Users/russ/.rvm/gems/ruby-1.9.2-p0/gems/activesupport-3.0.1/lib/active_support/dependencies.rb:591:in 'new_constants_in'
from /Users/russ/.rvm/gems/ruby-1.9.2-p0/gems/activesupport-3.0.1/lib/active_support/dependencies.rb:225:in 'load_dependency'
from /Users/russ/.rvm/gems/ruby-1.9.2-p0/gems/activesupport-3.0.1/lib/active_support/dependencies.rb:239:in 'require'
from (irb):2
from /Users/russ/.rvm/gems/ruby-1.9.2-p0/gems/railties-3.0.1/lib/rails/commands/console.rb:44:in 'start'
from /Users/russ/.rvm/gems/ruby-1.9.2-p0/gems/railties-3.0.1/lib/rails/commands/console.rb:8:in 'start'
from /Users/russ/.rvm/gems/ruby-1.9.2-p0/gems/railties-3.0.1/lib/rails/commands.rb:23:in '<top (required)>'
from script/rails:6:in 'require'
from script/rails:6:in '<main>'
尝试在需要EventMachine的类中运行方法时得到相同的结果 . EventMachine构建没有错误 . 我已经一遍又一遍地卸载了EventMachine和Ruby以及所有的宝石，但我无法完成这项工作 . 谁能指出我正确的方向？
-Russ
3 回答
Rails 3默认使用Bundler，这意味着您需要在_1057427中指定所有依赖项，如下所示：
gem "eventmachine"（通过
bundle install安装任何未安装的） .Bundler处理依赖关系管理，这意味着您可以锁定gem版本，并避免冲突，但相反，这意味着它不会加载Gemfile中未指定的任何内容 .
这也意味着如果你想在比webrick好的东西上运行你的开发网络服务器，你可能想要在你的gemfile中添加这样的东西
您是否尝试将其放入rails应用程序的gemfile并进行捆绑安装？
在Windows中删除Ruby x64 . 重新安装Ruby x86 .
查看者 . https://github.com/eventmachine/eventmachine/blob/master/ext/extconf.rb#L78-L90