 native code a file <code class="mendoza-code">mymod.c</code>, you will need to
compile it with your system's C compiler. The easiest way to do this is to use <code class="mendoza-code">jpm</code> and write a <code class="mendoza-code">project.janet</code> file.
<code class="mendoza-code">jpm</code> will handle all of the linking and flags for you so that you can write portable modules. Since <code class="mendoza-code">project.janet</code>
is just a Janet script, you can detect what platform you are running