eventmachine gem已安装在我的gemfile中：
eventmachine (1.0.0,0.12.10)
Fitzs-MacBook-Pro:twilio_insanity Fitz$rake db:create'
返回以下错误：
Unable to load the EventMachine C extension; To use the pure-ruby
reactor,require ’em/pure_ruby’ rake aborted! cannot load such file —
rubyeventmachine
/Users/Fitz/.rvm/gems/ruby-1.9.3-p327@rails3tutorial2ndEd/gems/eventmachine-1.0.0/lib/eventmachine.rb:8:in
require'‘
/Users/Fitz/.rvm/gems/ruby-1.9.3-p327@rails3tutorial2ndEd/gems/eventmachine-1.0.0/lib/eventmachine.rb:8:in
/Users/Fitz/.rvm/gems/ruby-1.9.3-p327@rails3tutorial2ndEd/gems/thin-1.5.0/lib/thin.rb:7:in
require'‘
/Users/Fitz/.rvm/gems/ruby-1.9.3-p327@rails3tutorial2ndEd/gems/thin-1.5.0/lib/thin.rb:7:in
/Users/Fitz/.rvm/gems/ruby-1.9.3-p327@global/gems/bundler-1.2.3/lib/bundler/runtime.rb:68:in
require'block (2 levels) in require’
/Users/Fitz/.rvm/gems/ruby-1.9.3-p327@global/gems/bundler-1.2.3/lib/bundler/runtime.rb:68:in
/Users/Fitz/.rvm/gems/ruby-1.9.3-p327@global/gems/bundler-1.2.3/lib/bundler/runtime.rb:66:in
each'block in require’
/Users/Fitz/.rvm/gems/ruby-1.9.3-p327@global/gems/bundler-1.2.3/lib/bundler/runtime.rb:66:in
/Users/Fitz/.rvm/gems/ruby-1.9.3-p327@global/gems/bundler-1.2.3/lib/bundler/runtime.rb:55:in
each'require’
/Users/Fitz/.rvm/gems/ruby-1.9.3-p327@global/gems/bundler-1.2.3/lib/bundler/runtime.rb:55:in
/Users/Fitz/.rvm/gems/ruby-1.9.3-p327@global/gems/bundler-1.2.3/lib/bundler.rb:128:in
require'‘ /Users/Fitz/Desktop/twilio_insanity/Rakefile:5:in
/Users/Fitz/Desktop/twilio_insanity/config/application.rb:7:in
require' /Users/Fitz/Desktop/twilio_insanity/Rakefile:5:in‘
/Users/Fitz/.rvm/gems/ruby-1.9.3-p327@rails3tutorial2ndEd/bin/ruby_noexec_wrapper:14:in
eval'‘ (See full trace by running task with –trace)
/Users/Fitz/.rvm/gems/ruby-1.9.3-p327@rails3tutorial2ndEd/bin/ruby_noexec_wrapper:14:in
“`
解决方法
$gem uninstall eventmachine
然后
$bundle install ( in the same folder with your Gemfile)
要不就
$gem install eventmachine ( if you are not using the Gemfile)