div class="notes">
<h3>Notes:</h3>
<ol>
<li id="note_1">At the time of writing, H2O can be built with libressl and boringssl.</li>
<li id="note_2">CMake is a popular build tool that can be found as a binary package on most operating systems.</li>
<li id="note_3"><code>mkmf</code> - a program for building ruby extensions is required.  In many distributions, the program is packaged as part of <code>ruby-dev<code> or <code>ruby-devel</code> package.</li>
</ol>
</div>

</div>
<div id="footer">
<p>
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