Installing mysql2 (0.2.6) with native extensions ubuntu

Installing mysql2 (0.2.6) with native extensions /usr/local/lib/site_ruby/1.8/rubygems/installer.rb:483:in `build_extensions': ERROR: Failed to build gem native extension. (Gem::Installer::ExtensionBuildError)

 install the compile binaries 

sudo apt-get install libmysql-ruby libmysqlclient-dev