While trying to install Ruby on Rails in Fedora Core 19, I ran into some errors with the ‘gem install rails’ command. [mark@localhost ~]$ gem install rails Fetching: i18n-0.6.9.gem (100%) Successfully installed i18n-0.6.9 Fetching: multi_json-1.8.2.gem (100%) Successfully installed multi_json-1.8.2 Fetching: tzinfo-0.3.38.gem (100%) Successfully installed tzinfo-0.3.38 Fetching: minitest-4.7.5.gem (100%) Successfully installed minitest-4.7.5 Fetching: atomic-1.1.14.gem (100%) Building native extensions. This could take a while… ERROR: Error installing rails: ERROR: Failed to build gem native extension. /usr/bin/ruby extconf.rb […]