title: installing mysql2 gem errors
body: <p>I installed ruby and ruby gems through macport but the gem list does not include mysql2. So how would I get mysql2 gem installed inside my gem list which is inside "/opt/local/bin/gem"</p>
  
  <p>Also, what is the mysql2 gem? I have mysql gem and only want to use mysql, not really sure what it means by mysql2. It gives my a mysql2 error when I try to launch webrick on an app.</p>
  
  <p>UPDATE:
  I ran sudo gem install mysql2 and got the following:</p>
  
  <blockquote>
    <p>Building native extensions.  This
    could take a while... Successfully
    installed mysql2-0.2.7 1 gem installed
    Installing ri documentation for
    mysql2-0.2.7...</p>
    
    <p>Enclosing class/module 'mMysql2' for
    class Client not known</p>
    
    <p>Enclosing class/module 'mMysql2' for
    class Result not known Installing RDoc
    documentation for mysql2-0.2.7...</p>
    
    <p>Enclosing class/module 'mMysql2' for
    class Client not known</p>
    
    <p>Enclosing class/module 'mMysql2' for
    class Result not known</p>
  </blockquote>
  
  <p>Assuming that mysql2 installed, even though the docs didn't I get the following error when I try to launch webrick in my app.</p>
  
  <p>rails server:</p>
  
  <blockquote>
    <p>/opt/local/lib/ruby/gems/1.8/gems/mysql2-0.2.7/lib/mysql2/mysql2.bundle:
    dlopen(/opt/local/lib/ruby/gems/1.8/gems/mysql2-0.2.7/lib/mysql2/mysql2.bundle,
    9): Library not loaded:
    libmysqlclient.18.dylib (LoadError)<br>
    Referenced from:
    /opt/local/lib/ruby/gems/1.8/gems/mysql2-0.2.7/lib/mysql2/mysql2.bundle
    Reason: image not found -
    /opt/local/lib/ruby/gems/1.8/gems/mysql2-0.2.7/lib/mysql2/mysql2.bundle
      from
    /opt/local/lib/ruby/gems/1.8/gems/mysql2-0.2.7/lib/mysql2.rb:8
      from
    /opt/local/lib/ruby/gems/1.8/gems/bundler-1.0.7/lib/bundler/runtime.rb:64:in
    <code>require'     from
    /opt/local/lib/ruby/gems/1.8/gems/bundler-1.0.7/lib/bundler/runtime.rb:64:in
    </code>require'     from
    /opt/local/lib/ruby/gems/1.8/gems/bundler-1.0.7/lib/bundler/runtime.rb:62:in
    <code>each'    from
    /opt/local/lib/ruby/gems/1.8/gems/bundler-1.0.7/lib/bundler/runtime.rb:62:in
    </code>require'     from
    /opt/local/lib/ruby/gems/1.8/gems/bundler-1.0.7/lib/bundler/runtime.rb:51:in
    <code>each'    from
    /opt/local/lib/ruby/gems/1.8/gems/bundler-1.0.7/lib/bundler/runtime.rb:51:in
    </code>require'     from
    /opt/local/lib/ruby/gems/1.8/gems/bundler-1.0.7/lib/bundler.rb:112:in
    <code>require'     from
    /Users/summer/Sites/simple_cms/config/application.rb:7
      from
    /opt/local/lib/ruby/gems/1.8/gems/railties-3.0.7/lib/rails/commands.rb:28:in
    </code>require'     from
    /opt/local/lib/ruby/gems/1.8/gems/railties-3.0.7/lib/rails/commands.rb:28
      from
    /opt/local/lib/ruby/gems/1.8/gems/railties-3.0.7/lib/rails/commands.rb:27:in
    <code>tap'     from
    /opt/local/lib/ruby/gems/1.8/gems/railties-3.0.7/lib/rails/commands.rb:27
      from script/rails:6:in</code>require'
      from script/rails:6</p>
  </blockquote>