title: Mountain Lion install rvm ree-1.8.7
body: <p>I tried following this <a href="https://stackoverflow.com/questions/11664835/mountain-lion-rvm-install-1-8-7-x11-error/11666019#11666019">other answer</a>, but I get the following problems:</p>
  
  <pre><code>$ export CPPFLAGS=-I/opt/X11/include
  $ CC=/usr/local/bin/gcc-4.2 rvm reinstall ree-1.8.7
  /Users/username/.rvm/src/ree-1.8.7-2012.02 has already been removed.
  /Users/username/.rvm/rubies/ree-1.8.7-2012.02 has already been removed.
  No binary rubies available for: osx/10/x86_64/ree-1.8.7-2012.02.
  Continuing with compilation. Please read 'rvm mount' to get more information on binary rubies.
  You requested building with '/usr/local/bin/gcc-4.2' but it is not in your path.
  </code></pre>
  
  <p>Is there something else I am doing wrong? I am using the October release of Command Line Tools from Apple, if that helps...</p>