我运行此命令，sudo gem install compass --pre
这给我一个错误
Fetching: sass-3.3.14.gem (100%)
Building native extensions. This could take a while...
ERROR: Error installing compass:
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:in `require'
from extconf.rb:4:in `<main>'
Gem files will remain installed in /var/lib/gems/1.9.1/gems/ffi-1.9.3 for inspection.
Results logged to /var/lib/gems/1.9.1/gems/ffi-1.9.3/ext/ffi_c/gem_make.out
current compass version -
Compass 0.12.7 (Alnilam)
current ruby version -
ruby 1.9.3p194 (2012-04-20 revision 35410) [x86_64-linux]
sass version -
Sass 3.3.14 (Maptastic Maple)
gem version -
1.8.23
答案 0 :(得分：1)
只是没有人看到@ ymonad的评论，对我来说修复是：
apt-get update
apt-get install ruby1.9.1-dev
apt-get install ruby-dev
apt-get install build-essential