"w"> </span><span class="nb">out.c</span><span class="nf">)</span><span class="w"></span>
</pre></div>
</div>
<p>adds a custom command to run <code class="docutils literal notranslate"><span class="pre">someTool</span></code> to generate <code class="docutils literal notranslate"><span class="pre">out.c</span></code> and then
compile the generated source as part of a library.  The generation rule
will re-run whenever <code class="docutils literal notranslate"><span class="pre">in.txt</span></code> changes.<