title: CentOS: RVM and no package libyaml available
body: <p>I'm trying to install RVM on a CentOS host and it fails with this error:</p>
  
  <pre><code>/usr/local/rvm/rubies/ruby-1.9.3-p194/bin/ruby: error while loading shared libraries: libruby.so.1.9: cannot open shared object file: No such file or directory
  Libraries missing for ruby-1.9.3-p194: libruby.so.1.9. Refer to your system manual for installing libraries
  Mounting remote ruby failed, trying to compile.
  </code></pre>
  
  <p>After some Googling it seems I need to manually install the libyaml package, to which the host says:</p>
  
  <pre><code>No package libyaml available.
  </code></pre>
  
  <p>Any ideas?</p>