title: Missing pyconfig.h while installing a package
body: <p>I'm using <a href="https://www.synology.com/en-us/dsm/app_packages/py3k" rel="nofollow">Python3 (v3.4) add-on</a> on my Synology NAS.</p>
  
  <p>When I try to install package (via ssh using <code>python3 setup.py install</code>) it returns error:</p>
  
  <blockquote>
    <p>invalid Python installation: unable to open /volume1/@appstore/py3k/usr/local/include/python3.4m/pyconfig.h (No such file or directory)</p>
  </blockquote>
  
  <p>When I search the disk for the <em>pyconfig.h</em> file, it finds nothing and the folder <em>...include/python3.4m</em> doesn't even exist. The problem occurred some time ago (in version 3.3), but I searched the disk, found the <em>pyconfig.h</em> file in different location and copied it into the proper folder. Now, there isn't any file anywhere.</p>
  
  <p>Is there any way how to fix this?
  Thank you.</p>