title: Jruby 1.6 added support for c native extension, but how do you build gems with c extensions?
body: <p><strong>Yea pretty much it. On windows xp sp3. This is what happens:</strong></p>
  
  <p>jruby -S gem install a_gem_with_c_extensions</p>
  
  <p>failed to build a_gem_with_c_extensions</p>
  
  <p>could not find make command</p>
  
  <p>Do i need cygwin, mingw, ruby dev-kit ?</p>
  
  <p>Why it's not documented ? Native extension support feature has been out like 7 months now but no one has ever written one line to teach how to set it up?</p>