title: Ruby:: error to install ruby-debug-ide on windows
body: <p>I refered this post to install <a href="https://stackoverflow.com/questions/6104548/how-to-debug-ruby-on-rails-in-eclipse-aptana-plugin">How to debug ruby on rails in eclipse aptana plugin</a> ruby-debug-ide  and this <a href="http://www.rubytips.org/2011/12/20/installing-ruby-on-windows-7-ruby-1-9-x-guide/" rel="nofollow noreferrer">link</a> . </p>
  
  <p>I have installed </p>
  
  <pre><code>C:\Users&gt;gem install ruby-debug-ide --platform=ruby --pre
  Temporarily enhancing PATH to include DevKit...
  Building native extensions.  This could take a while...
  Successfully installed ruby-debug-ide-0.4.17.beta14
  1 gem installed
  Installing ri documentation for ruby-debug-ide-0.4.17.beta14...
  Installing RDoc documentation for ruby-debug-ide-0.4.17.beta14...
  </code></pre>
  
  <p>But I got this error when I install ruby-debug-ide</p>
  
  <pre><code>C:\Users&gt;gem install ruby-debug-ide --platform=ruby
  Temporarily enhancing PATH to include DevKit...
  Building native extensions.  This could take a while...
  ERROR:  Error installing ruby-debug-ide:
          ERROR: Failed to build gem native extension.
  
          C:/Ruby193/bin/ruby.exe mkrf_conf.rb
  Building native extensions.  This could take a while...
  
  
  Gem files will remain installed in C:/Ruby193/lib/ruby/gems/1.9.1/gems/ruby-debug-ide-0.4.16 for inspection.
  Results logged to C:/Ruby193/lib/ruby/gems/1.9.1/gems/ruby-debug-ide-0.4.16/ext/gem_make.out
  </code></pre>
  
  <p>Here is my environment</p>
  
  <pre><code>C:\Users&gt;gem environment
  RubyGems Environment:
    - RUBYGEMS VERSION: 1.8.11
    - RUBY VERSION: 1.9.3 (2011-10-30 patchlevel 0) [i386-mingw32]
    - INSTALLATION DIRECTORY: C:/Ruby193/lib/ruby/gems/1.9.1
    - RUBY EXECUTABLE: C:/Ruby193/bin/ruby.exe
    - EXECUTABLE DIRECTORY: C:/Ruby193/bin
    - RUBYGEMS PLATFORMS:
      - ruby
      - x86-mingw32
    - GEM PATHS:
       - C:/Ruby193/lib/ruby/gems/1.9.1
       - C:/Users/username/.gem/ruby/1.9.1
    - GEM CONFIGURATION:
       - :update_sources =&gt; true
       - :verbose =&gt; true
       - :benchmark =&gt; false
       - :backtrace =&gt; false
       - :bulk_threshold =&gt; 1000
    - REMOTE SOURCES:
       - http://rubygems.org/ 
  </code></pre>
  
  <p>Something  am I missing ?</p>