Debian JSON for Ruby
I tried to install JSON for Ruby via RubyGem, # gem install json and I got the following error message: Building native extensions. This could take a while...<br /> ERROR: Error installing json:<br /> ERROR: Failed to build gem native extension. <br /> /usr/bin/ruby1.8 extconf.rb install json<br /> extconf.rb:1:in `require': no such file to load -- mkmf (LoadError)<br /> from extconf.rb:1<br /> <br /> Gem files will remain installed in /usr/lib/ruby/gems/1....