title: survival package errors R
body: <p>I've been having some problems installing the 'survival' package in R. I have tried almost everything including trying to build from source, and I'm getting this same error.</p>
  
  <pre><code>&gt;&gt;install.package('survival')
  
  Error in library.dynam(lib, package, package.lib)
      shared object ‘Matrix.so’ not found
  ERROR: lazy loading failed for package ‘survival’
  * removing ‘/home/dave/R/x86_64-pc-linux-gnu-library/3.4/survival’
  </code></pre>
  
  <p>my distro--</p>
  
  <pre><code>Distributor ID: Ubuntu
  Description:    Ubuntu 16.04.3 LTS
  Release:    16.04
  Codename:   xenial
  </code></pre>