https://devzone.nordicsemi.com/f/nordic-q-a/55311/eclipse-include-folder-settingNow I can build &amp; download nRF52840 SDK example with Eclipse. But Eclipse indexer(F3 key) can not recognize include folder. So I added every include folder to .cproject file as bellow. &lt; listOptionValue builtIn = &quot;false&quot; value = &quot; &amp;quot; C:\nRF51en-USTelligent Community 13Fri, 06 Dec 2019 13:40:07 GMThttps://devzone.nordicsemi.com/thread/224202?ContentTypeID=1Fri, 06 Dec 2019 13:40:07 GMT137ad170-7792-4731-bb38-c0d22fbe4515:139fdda1-dc77-4e7d-b40c-b5190c0098f6Joakim Jakobsen<p>Hi Kim.&nbsp;</p> <p>I would highly suggest that you&nbsp;use SES when developing with our nRF5 SDK instead of Eclipse, as Eclipse is not an IDE that we officially support.&nbsp;</p> <p>We do provide a free commercial license with SEGGER Embedded Studio that can be used when developing on nRF5 devices.&nbsp;</p> <p>Best regards,&nbsp;<br />Joakim Jakobsen</p><div style="clear:both;"></div>