在ubuntu上安裝mongo gem時出錯

Question

我在Amazon EC2實例上運行ubuntu 14.04.3 LTS。任何幫助解決這個錯誤將不勝感激。

鍵入sudo gem install mongo產生如下：

Fetching: bson-3.2.1.gem (100%) 
Building native extensions. This could take a while... 
ERROR: Error installing mongo: 
    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:1:in `<main>' 


Gem files will remain installed in /var/lib/gems/1.9.1/gems/bson-3.2.1 for inspection. 
Results logged to /var/lib/gems/1.9.1/gems/bson-3.2.1/ext/bson/gem_make.out 

Answer 1

另一個問題 - `require': no such file to load -- mkmf (LoadError) - 有一個答案應該解決這個問題你;

sudo apt-get install ruby1.9.1-dev 

sudo apt-get install ruby-dev