https://devzone.nordicsemi.com/f/nordic-q-a/13842/segger-rtt-no-console-outputim running on mac with eclipse and tried to use debugger prints, but the don&#39;t show up in the console. Same goes for printf and uart. Is there a flag in the makefile preventing it?en-USTelligent Community 13Thu, 26 May 2016 15:42:17 GMThttps://devzone.nordicsemi.com/thread/52896?ContentTypeID=1Thu, 26 May 2016 15:42:17 GMT137ad170-7792-4731-bb38-c0d22fbe4515:3da0e1d6-210b-4934-ade5-2c0184731928Christopher<p>Have a look at this post, it should help: <a href="https://devzone.nordicsemi.com/question/44790/rtt-on-os-x/?answer=44881#post-id-44881">devzone.nordicsemi.com/.../</a></p> <p>Please also update to the latest Segger tools. here is the download link: <a href="https://www.segger.com/jlink-software.html">www.segger.com/jlink-software.html</a></p> <p>On Mac OS X, there is only the <code>JLinkRTTClient</code>, the viewer is not available. I do not know if Eclipse generates the Makefile for you automatically, but you should add this flag in order to enable output logs using RTT:</p> <pre><code>CFLAGS += -DNRF_LOG_USES_RTT=1 </code></pre><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/52895?ContentTypeID=1Tue, 24 May 2016 12:40:09 GMT137ad170-7792-4731-bb38-c0d22fbe4515:1c7bde51-bbb3-4ef6-81c9-29a4995a5426MartinBL<p>Hi. Have you seen and tried this: <a href="https://devzone.nordicsemi.com/question/44790/rtt-on-os-x/">RTT on os X</a>?</p><div style="clear:both;"></div>