https://devzone.nordicsemi.com/f/nordic-q-a/15961/problem-debugging-on-eclipse-linux-nrf51I&#39;ve followed the tutorial about setting the eclipse environement devzone.nordicsemi.com/.../ I&#39;ve got every thing to work except the debugging, it stops every time at : ffffffff: add %al,%al no matter where is my breakpoint and shows : Noen-USTelligent Community 13Sun, 12 Feb 2017 12:22:14 GMThttps://devzone.nordicsemi.com/thread/60886?ContentTypeID=1Sun, 12 Feb 2017 12:22:14 GMT137ad170-7792-4731-bb38-c0d22fbe4515:619cb293-2315-4a9a-9c8f-ca893b15eae6Johannes Lorenz<p>Hi, I had the same situation, caused by the compiler flag -flto in the Makefile. HTH Johannes</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/60885?ContentTypeID=1Thu, 25 Aug 2016 08:27:28 GMT137ad170-7792-4731-bb38-c0d22fbe4515:0de2ea5b-d18f-4bb4-a482-02674f635285Petter Myhre<p>There are some things you can try <a href="https://devzone.nordicsemi.com/question/82990/no-source-available-for-0xffffffff/">here</a>.</p><div style="clear:both;"></div>