$ gem install gimli Fetching: github-markup-0.5.3.gem (100%) Fetching: redcarpet-1.17.2.gem (100%) Building native extensions. This could take a while... Fetching: org-ruby-0.5.3.gem (100%) Fetching: creole-0.4.2.gem (100%) Fetching: expression_parser-0.9.0.gem (100%) Fetching: wikicloth-0.6.3.gem (100%) Fetching: nokogiri-1.4.7.gem (100%) Building native extensions. This could take a while... ERROR: Error installing gimli: ERROR: Failed to build gem native extension.
/home/user/.rvm/rubies/ruby-1.9.2-p290/bin/ruby extconf.rb checking for libxml/parser.h... no ----- libxml2 is missing. please visit http://nokogiri.org/tutorials/installing_nokogiri.html forhelp with installing dependencies.