Installing pycurl with 'fatal error: gnutls/gnutls.h: No such file or directory' : <p>I use ubuntu 16.04 and python 2.7.12.</p>

<p>When I try to install pycurl with pip, I could see below log.</p>

<pre><code>aaa@bbb:~/git/ccc$ sudo pip install pycurl
  Downloading pycurl-7.43.0.tar.gz (182kB)
    100% |████████████████████████████████| 184kB 515kB/s 
Installing collected packages: pycurl
  Running setup.py install for pycurl ... error

...

    In file included from src/docstrings.c:4:0:
    src/pycurl.h:173:30: fatal error: gnutls/gnutls.h: No such file or directory
    compilation terminated.
</code></pre>

<p>How to install pycurl with above log?</p>
