 build</code></pre>
<div id="common-problems" class="section level3" number="1.4.1">
<h3><span class="header-section-number">1.4.1</span> Common problems</h3>
<p>This section contains solutions to problems reported on <a href="https://discourse.mc-stan.org" class="uri">https://discourse.mc-stan.org</a></p>
<p><strong>Compiler error message about PCH file</strong></p>
<p>To speed up compilation, the Stan makefile pre-compiles parts of the core Stan library.
If these pre-compiled files are out of sync with th