无法安装Nokogiri

Question

当我在Ubuntu12.1上运行sudo gem install nokogiri时，返回的结果如下。哪里出了问题，我该如何修复它？

jason@jason:~/ror/clss$ sudo gem install nokogiri
Building native extensions.  This could take a while...
ERROR:  Error installing nokogiri:
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:5:in `<main>'


Gem files will remain installed in /var/lib/gems/1.9.1/gems/nokogiri-1.5.5 for 
inspection. Results logged to /var/lib/gems/1.9.1/gems/nokogiri-1.5.5/ext/nokogiri
/gem_make.out

Answer 1

尝试安装"libxslt-dev“和"libxml2-dev”包：

sudo apt-get install libxslt-dev libxml2-dev

说明在http://nokogiri.org/tutorials/installing_nokogiri.html上

更新：

你需要sudo aptitude install ruby1.9.1-dev。

来源："Rails Tutorial: nokogiri-1.5.2 error on bundle install“。