</h3>
<p>Once you have written your C code that defines your native module (see the
<a href="/capi/embedding.html">embedding</a> page on how to do this), you must declare
it in <code class="mendoza-code">project.janet</code> in order for <code class="mendoza-code">jpm</code> to build the native modules
for you.
</p>
<pre class="mendoza-codeblock"><code data-language="janet">(<span class="mdzsyn-symbol">declare-native</span>
 <span class="mdzsyn-keyword">:name</span> <span class="mdzsyn-string">"mynative"</s