title: Error while installing Omnet++ on Ubuntu 16.04 : Cannot find osgEarth
body: <p>I followed the installation guide and installed all the packages mentioned. However, I end up with this error message while running ./configure</p>
  
  <pre><code>checking for osgEarth with CFLAGS=" -fPIC  -fno-stack-protector  " LIBS="  -losgEarth -losgEarthUtil"... no
  configure: error: Cannot find osgEarth 2.7 or later. Set WITH_OSGEARTH=no in configure.user to disable this feature or install an up to date version of osgEarth.
  </code></pre>
  
  <p>Here is a link to my config.log file : <a href="https://pastebin.com/JzhsCZu3" rel="nofollow noreferrer">config.log</a></p>