https://devzone.nordicsemi.com/f/nordic-q-a/24674/eclipse-undefined-referenceHello All, I&#39;ve finally managed to get Eclipse up and running after migrating from Keil, but now I&#39;m having the following problem: I&#39;m trying to port the buttonless_dfu example in to my project. However the linker gives the following warnings thaten-USTelligent Community 13Mon, 28 Aug 2017 06:28:26 GMThttps://devzone.nordicsemi.com/thread/97122?ContentTypeID=1Mon, 28 Aug 2017 06:28:26 GMT137ad170-7792-4731-bb38-c0d22fbe4515:2b0737ee-e396-4077-9e54-5579e4ff9da0Radiohead<p>Indeed I had forgotten to enable the peer, FDS and some other functionalities in the sdk_config.h file. I&#39;ve used notepadd++ compare to find the missing settings. Now with all the definitions set, my project compiles without warnings. fds_gx still points to its function prototype in fds.h, when I F3 but that&#39;s not an issue for me.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/97121?ContentTypeID=1Fri, 25 Aug 2017 18:26:59 GMT137ad170-7792-4731-bb38-c0d22fbe4515:5896ad1e-ce92-4a5b-b2fd-d90d6a7e947dBryan H<p>Have you checked to make sure peer_manager and FDS are enabled in sdk_config.h?</p> <p>Sounds like an error I had and enabling them there fixed my problems.</p> <p>Do a file compare between your sdk_config.h file and the donor project&#39;s sdk_config.h file. I use a free program called ExamDiff - it works very well and can only show you the differences if you want side by side.</p> <p>My Eclipse (neon) also points to fds.h when I f3 on fds_gc. If you figure this out, let me know.</p> <p>Hope this helps...</p><div style="clear:both;"></div>