title: Rails4, Ruby2, MySLQ2 and RubyMine
body: <p>I'm getting this same error message as all of you, but I'm on a Mac (10.8), using Rails4 and Ruby2 and RubyMine (IDE).</p>
  
  <pre><code>/Users/eric/.rvm/rubies/ruby-2.0.0-p195/bin/ruby -e $stdout.sync=true;$stderr.sync=true;load($0=ARGV.shift) /Users/eric/Rubymine/Chroma/bin/bundle install
  Fetching gem metadata from https://rubygems.org/........
  Fetching gem metadata from https://rubygems.org/..
  Resolving dependencies...
  ...
  ...
  ...
  Installing mysql2 (0.3.11) 
  Gem::Installer::ExtensionBuildError: ERROR: Failed to build gem native extension.
  
  /Users/eric/.rvm/rubies/ruby-2.0.0-p195/bin/ruby extconf.rb 
  checking for rb_thread_blocking_region()... yes
  checking for rb_wait_for_single_fd()... yes
  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
  --with-opt-include
  --without-opt-include=${opt-dir}/include
  --with-opt-lib
  --without-opt-lib=${opt-dir}/lib
  --with-make-prog
  --without-make-prog
  --srcdir=.
  --curdir
  --ruby=/Users/eric/.rvm/rubies/ruby-2.0.0-p195/bin/ruby
  --with-mysql-config
  --without-mysql-config
  --with-mysql-dir
  --without-mysql-dir
  --with-mysql-include
  --without-mysql-include=${mysql-dir}/include
  --with-mysql-lib
  --without-mysql-lib=${mysql-dir}/
  --with-mysqlclientlib
  --without-mysqlclientlib
  --with-mlib
  --without-mlib
  --with-mysqlclientlib
  --without-mysqlclientlib
  --with-zlib
  --without-zlib
  --with-mysqlclientlib
  --without-mysqlclientlib
  --with-socketlib
  --without-socketlib
  --with-mysqlclientlib
  --without-mysqlclientlib
  --with-nsllib
  --without-nsllib
  --with-mysqlclientlib
  --without-mysqlclientlib
  --with-mygcclib
  --without-mygcclib
  --with-mysqlclientlib
  --without-mysqlclientlib
  
  Gem files will remain installed in /Users/eric/.rvm/gems/ruby-2.0.0-p195@global/gems/mysql2-0.3.11 for inspection.
  Results logged to /Users/eric/.rvm/gems/ruby-2.0.0-p195@global/gems/mysql2-0.3.11/ext/mysql2/gem_make.out
  An error occurred while installing mysql2 (0.3.11), and Bundler cannot continue.
  Make sure that `gem install mysql2 -v '0.3.11'` succeeds before bundling.
  
  Process finished with exit code 5
  </code></pre>
  
  <p>I have tried a number of other things from around the web as well:
  - Running <code>gem install mysql2</code> from the command line gets me the same message as above.
  - Running <code>gem 'mysql2'</code> gets me this error: <code>ERROR:  While executing gem ... (Gem::CommandLineError) Unknown command mysql2</code> even though I have it it my Gemfile: <a href="http://d.pr/n/jc3i" rel="nofollow">http://d.pr/n/jc3i</a>
  - I have tried adding <code>rvm install libmysql-ruby</code> hoping that would fix it.. nope..</p>
  
  <p>I should mention this is my first real foray into RoR, so it's quite possible <em>I'm</em> the problem... I've looked all over StackOverflow and haven't really had any luck there either. Any help would be greatly appreciated.</p>