https://devzone.nordicsemi.com/f/nordic-q-a/58119/nrf-connect-sdk-fails-to-build-with-attempt-to-assign-the-value-y-to-the-undefined-symbolHi, Just reporting an issue I am having with the nRF9160 SDK in the hope that it will help someone else. OS is Ubuntu 18.04. I was getting errors which look like this: and these were preventing the build from completing. The issue hereen-USTelligent Community 13Mon, 24 Feb 2020 10:34:03 GMThttps://devzone.nordicsemi.com/thread/235917?ContentTypeID=1Mon, 24 Feb 2020 10:34:03 GMT137ad170-7792-4731-bb38-c0d22fbe4515:8e19fd6f-e0a1-4052-b24a-9c7bb0a6c97aDidrik Rokhaug<p>From my experience, the errors you got indicates that you did not select the non-secure version of the board.</p> <p>As for why changing the python path worked, you either selected the non-secure version of the board after changing the path, or you had a different root problem.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/235698?ContentTypeID=1Fri, 21 Feb 2020 12:09:33 GMT137ad170-7792-4731-bb38-c0d22fbe4515:13a1f1ea-4b68-4903-b3ee-2854ddcc9086jeremyherbert<p>As far as I can tell, I had selected the &ldquo;ns&rdquo; version of the board. But if this was the issue, then why did changing the python path work?</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/235696?ContentTypeID=1Fri, 21 Feb 2020 12:01:26 GMT137ad170-7792-4731-bb38-c0d22fbe4515:eb7677e3-737a-4530-b85a-54b6e1f7dfa5Didrik Rokhaug<p>Hi.</p> <p>You should select the non-secure version of the board, as bsdlib can only be used from a non-secure application and you need bsdlib to use the modem.</p> <p>To select the non-secure version of the board, you must select the version with &quot;ns&quot; at the end of the name, e.g. nrf9160_pca10090<strong>ns</strong>.</p> <p>Best regards,</p> <p>Didrik</p><div style="clear:both;"></div>