i><a href="https://github.com/ljosa/cl-png">GitHub repository</a>
</ul>


<h2><a name="Installation">Installation</a></h2>

<p>CL-PNG depends on <a
href="http://www.libpng.org/pub/png/libpng.html">libpng</a> (your
operating system distribution may have a separate package, called
<tt>libpng-dev</tt> or something similar, that contains the required
<tt>png.h</tt> header file) and <a
href="http://common-lisp.net/project/cffi/">CFFI</a>.  CFFI in turn
depends on <a
href="http://common-lisp.net/project/alexandri