https://devzone.nordicsemi.com/f/nordic-q-a/81378/a-problem-with-zephyr-c-and-stringI&#39;m having a problem with what should be a very simple exercise. I&#39;m trying to compile the Zephyr sample subsys/cpp/cpp_synchronization after adding #include &lt;string&gt; to the main.cpp . This generates the error: fatal error: string: No such file or directoryen-USTelligent Community 13Thu, 04 Nov 2021 17:12:09 GMThttps://devzone.nordicsemi.com/thread/337564?ContentTypeID=1Thu, 04 Nov 2021 17:12:09 GMT137ad170-7792-4731-bb38-c0d22fbe4515:abef3dc9-a6f5-45c1-9357-7f3d5c35fda9Chris Pearson<p>Aha!&nbsp; Thank you -- that was what is missing. Unfortunately the Zephyr documentation tends to be rather sparse...</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/337482?ContentTypeID=1Thu, 04 Nov 2021 13:01:55 GMT137ad170-7792-4731-bb38-c0d22fbe4515:466933a2-0db0-4489-a6ee-f0eada477700Einar Thorsrud<p>Hi,</p> <p>You should add a few configs in prj.conf:</p> <p><pre class="ui-code" data-mode="text">CONFIG_CPLUSPLUS=y CONFIG_LIB_CPLUSPLUS=y CONFIG_NEWLIB_LIBC=y</pre></p><div style="clear:both;"></div>