e of the directories
in <a href="http://constantly.at/lisp/asdf/Using-asdf-to-load-systems.html#Using%20asdf%20to%20load%20systems"><b>asdf:*central-registry*</b></a>.
Then, evaluate <code>(asdf:oos 'asdf:load-op '#:png)</code> in order
to compile and load CL-PNG.</p>

<p>On Mac OS X 10.4, you may discover that the C compiler does not
accept the <code>-m32</code> option that <a
href="http://common-lisp.net/project/cffi/manual/html_node/The-Groveller.html">CFFI-Grovel</a>
attempts to pass to it.  You will ne