title: GnuTLS Libnettle 3.4 was not found
body: <p>When I try to configure GnuTLS I'm getting the error that Libnettle 3.4 was not found. I've nettle 3.4.1-1 installed and the library files are present in /usr/lib. Even when I specify the environment variable <code>NETTLE_LIBS</code> directly (<code>export NETTLE_LIBS="-L/usr/lib -R/usr/lib -lnettle"</code>) it always throws out that message.</p>
  
  <p>In the config.log is following more concrete message:</p>
  
  <pre><code>Package dependency requirement 'nettle &gt;= 3.4.1' could not be satisfied.
  Package 'nettle' has version '3.4', required version is '&gt;= 3.4.1'
  </code></pre>
  
  <p>What I'am missing here?</p>