title: raspberry pi unable to install lxml pip package
body: <p>I am trying to install <code>lxml</code> package after i installed <code>BeautifulSoup4</code> package.</p>
  
  <p>In the terminal i type:</p>
  
  <pre><code>sudo pip install lxml
  </code></pre>
  
  <p>This is what i get</p>
  
  <pre><code>sudo pip install lxml
  Downloading/unpacking lxml
    Running setup.py egg_info for package lxml
      Building lxml version 3.6.1.
      Building without Cython.
      Using build configuration of libxslt 1.1.26
      Building against libxml2/libxslt in the following directory: /usr/lib
  
  Installing collected packages: lxml
    Running setup.py install for lxml
      Building lxml version 3.6.1.
      Building without Cython.
      Using build configuration of libxslt 1.1.26
      Building against libxml2/libxslt in the following directory: /usr/lib
      building 'lxml.etree' extension
      gcc -pthread -fno-strict-aliasing -DNDEBUG -g -fwrapv -O2 -Wall -Wstrict-prototypes -fPIC -I/usr/include/libxml2 -Isrc/lxml/includes -I/usr/include/python2.7 -c src/lxml/lxml.etree.c -o build/temp.linux-armv9l-2.7/src/lxml/lxml.etree.o -w
  </code></pre>
  
  <p>And then it just hangs there at the last line for a very long long time, I have to exit by pressing <kbd>CTRL+C</kbd>.</p>
  
  <p>Can someone tell me what it really means?</p>
  
  <p>I then try <code>pip freeze</code> to see if the package is installed. No, it is not there.</p>