Hi Phillippe,<br /><br />Yeah, I forgot to fill my example. Thanks for the catch.<br /><br />It is exactly as Bob mentioned, #include MACRO(xxx.h).<br /><br />There are silicon code use macro to separate definitions, and use the approach to reuse code. Like:<br />#define PATH(x) &lt;silicon1/x.h&gt; // in platform 1<br />#define PATH(x) &lt;silicon2/x.h&gt; // in platform 2<br />#include PATH(abc.h)&nbsp; &nbsp;// in common code