title: MySQL2 with native extensions ERROR: Failed to build gem native extension. (Gem::Installer::ExtensionBuildError)
body: <p>I am trying to install the <strong>gem mysql2</strong> for <strong>Ruby Enterprise Edition</strong>. I am getting error that says:</p>
  
  <pre><code>    Installing mysql2 (0.2.7) with native extensions /Users/rookieRails/.rvm/rubies/ree-1.8.7-2011.03/lib/ruby/site_ruby/1.8/rubygems/installer.rb:551:in `build_extensions': ERROR: Failed to build gem native extension. (Gem::Installer::ExtensionBuildError)
  
          /Users/vinayashrestha/.rvm/rubies/ree-1.8.7-2011.03/bin/ruby extconf.rb 
  checking for rb_thread_blocking_region()... no
  checking for mysql_query() in -lmysqlclient... no
  checking for main() in -lm... yes
  checking for mysql_query() in -lmysqlclient... no
  checking for main() in -lz... yes
  checking for mysql_query() in -lmysqlclient... no
  checking for main() in -lsocket... no
  checking for mysql_query() in -lmysqlclient... no
  checking for main() in -lnsl... no
  checking for mysql_query() in -lmysqlclient... no
  checking for main() in -lmygcc... no
  checking for mysql_query() in -lmysqlclient... no
  *** extconf.rb failed ***
  Could not create Makefile due to some reason, probably lack of
  necessary libraries and/or headers.  Check the mkmf.log file for more
  details.  You may need configuration options.
  
  Provided configuration options:
      --with-opt-dir
      --without-opt-dir
      --with-opt-include
      --without-opt-include=${opt-dir}/include
      --with-opt-lib
      --without-opt-lib=${opt-dir}/lib
      --with-make-prog
      --without-make-prog
  </code></pre>
  
  <p>Does anyone have any idea what configuration options I should use, or whatever I need to to to get this fixed?</p>