title: Where do I find the libxul.so library for my Linux system?
body: <p>I recently downloaded the 64-bit version of Firefox for my Linux system …</p>
  
  <pre><code>[davea@mydevbox mydir]$ uname -a
  Linux mydevbox.mydomain.com 7.3.8-25.26.amzn1.x86_64 #1 SMP Wed Mar 16 17:15:34 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux
  </code></pre>
  
  <p>but I don’t seem to be able to run it, getting this bizarre error …</p>
  
  <pre><code>[davea@mydevbox firefox]$ ./firefox -V
  XPCOMGlueLoad error for file /home/davea/firefox/libxpcom.so:
  libxul.so: cannot open shared object file: No such file or directory
  Couldn't load XPCOM.
  </code></pre>
  
  <p>Does anyone know what library I need to install to get “libxul.so”?  I tried “yum install libxml” but that didn’t resolve to anything.</p>