title: error: command 'x86_64-linux-gnu-gcc' failed with exit status 1
body: <p>i try install pcapy, but outgoing notifications like this :</p>
  
  <blockquote>
    <p>cc1plus: warning: command line option ‘-Wstrict-prototypes’ is valid for C/ObjC but not for C++ [enabled by default]</p>
    
    <p>pcapdumper.cc:11:18: fatal error: pcap.h: No such file or directory</p>
    
    <p>#include </p>
  
  <pre><code>     ^
  </code></pre>
    
    <p>compilation terminated.
        error: command 'x86_64-linux-gnu-gcc' failed with exit status 1</p>
  </blockquote>
  
  <p>i use ubuntu 14.04</p>