CMake generate config.h like from Autoconf
<p>When using the Autotools it's common to generate a <code>config.h</code> file by specifying the <code>AC_CONFIG_HEADERS</code> macro in <code>configure.ac</code> like this:</p>

<pre><code>AC_CONFIG_HEADERS([config.h])
</code></pre>

<p>What is the respective equivalent for this when using CMake?</p>