linux下 bundle install出错

成功执行完sudo gem install bundler后继续执行sudo bundle install出错，提示如下：

Fetching gem metadata from http://rubygems.org/.......
Fetching additional metadata from http://rubygems.org/..
Resolving dependencies...
Using rake (0.9.2.2)

Gem::Installer::ExtensionBuildError: ERROR: Failed to build gem native extension.

/usr/bin/ruby1.9.1 extconf.rb 

/usr/lib/ruby/1.9.1/rubygems/custom_require.rb:36:in require': cannot load such file -- mkmf (LoadError) from /usr/lib/ruby/1.9.1/rubygems/custom_require.rb:36:inrequire'
from extconf.rb:1:in `

'
Gem files will remain installed in /var/lib/gems/1.9.1/gems/RedCloth-4.2.9 for inspection.
Results logged to /var/lib/gems/1.9.1/gems/RedCloth-4.2.9/ext/redcloth_scan/gem_make.out
An error occurred while installing RedCloth (4.2.9), and Bundler cannot continue.
Make sure that gem install RedCloth -v '4.2.9' succeeds before bundling.