title: Issues installing Drake locally on Ubuntu 18.04
body: <p>I am following the instructions in the textbook of the course 6.832, appendix A, on how to install Drake locally on Linux. </p>
  
  <p>All the installation steps have completed and seems to be successful. In addition, I have installed all the prerequisites as described. However, when I run the test in section 2.3 </p>
  
  <pre><code>(python -c 'import pydrake; print(pydrake.__file__)') 
  </code></pre>
  
  <p>I have experienced several errors.</p>
  
  <p>It seems that it is trying to access older version of several <code>lib***.so</code> files than what I have. </p>
  
  <p>F.eks: Pydrake tried to include libgfortran.so.3, when I only have libgfortran.so.4 on my computer. I tried to do some "hackfixes" by using the <code>ln -s</code> command to make the terminal accept "libgfortran.so.4" as "libgfortran.so.3". But, now I ran into another error that I don't know how to solve.</p>
  
  <p>It says:</p>
  
  <blockquote>
    <p>Traceback (most recent call last):  File "", line 1, in
      File
    "/opt/drake/lib/python2.7/site-packages/pydrake/<strong>init</strong>.py", line 32,
    in     from . import common  File
    "/opt/drake/lib/python2.7/site-packages/pydrake/common/<strong>init</strong>.py",
    line 3, in     from ._module_py import * ImportError:
    /opt/drake/lib/python2.7/site-packages/pydrake/common/../../../../libdrake.so:
    undefined symbol:
    _ZN6google8protobuf2io17CodedOutputStream28WriteVarint32FallbackToArrayEjPh</p>
  </blockquote>
  
  <p>How do I handle this problem?</p>