我正在尝试安装 ruby，但每次sudo bundle --without production安装到 therubyracer 时都会崩溃：
Gem::Installer::ExtensionBuildError: ERROR: Failed to build gem native extension.
/System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/bin/ruby extconf.rb
checking for main() in -lobjc... yes
*** 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.
Gem files will remain installed in /Library/Ruby/Gems/2.0.0/gems/therubyracer-0.9.10 for inspection.
Results logged to /Library/Ruby/Gems/2.0.0/gems/therubyracer-0.9.10/ext/v8/gem_make.out
An error occurred while installing therubyracer (0.9.10), and Bundler cannot continue.
Make sure that `gem install therubyracer -v '0.9.10'` succeeds before bundling.
有什么办法可以使这项工作？
谢谢