https://devzone.nordicsemi.com/f/nordic-q-a/15133/unable-to-build-ble_app_hrs_s132_with_dfu_pca10040-example-with-gnu-and-eclipseFirst off, I have worked through Vidar&#39;s excellent tutorial located at &quot; devzone.nordicsemi.com/.../&quot; and have successfully built and run the blank blinky example so my installation of the tools is probably correct. The next step is to build an exampleen-USTelligent Community 13Fri, 10 Feb 2017 14:53:08 GMThttps://devzone.nordicsemi.com/thread/57772?ContentTypeID=1Fri, 10 Feb 2017 14:53:08 GMT137ad170-7792-4731-bb38-c0d22fbe4515:d58230c0-75d5-48d5-9ebe-72f4f33e8e7dMorten<p>I had the exact same error Using SDK 12.2.0 and Eclipse Marse (4.5.2). Followed the tutorial with the HRS example because there was no Blinky example for the SDK 12.2.0.</p> <p>The solution for me was including a symbol in eclipse as suggested in <a href="https://devzone.nordicsemi.com/question/79227/eclipse-missing-symbols/?answer=79379#post-id-79379">devzone.nordicsemi.com/.../</a></p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/57771?ContentTypeID=1Wed, 13 Jul 2016 20:17:56 GMT137ad170-7792-4731-bb38-c0d22fbe4515:c2a352d3-df48-4ef7-acc2-bae66bd76af9RHTPaul<p>I went through and rechecked everything in detail. I found that the instruction &quot;Click on CDT Built-in Compiler Settings Cross ARM and replace ${COMMAND} with arm-none-eabi-gcc and click Apply.&quot; was not done in the correct place.</p> <p>After repeating the instruction correctly, the Eclipse build completed without errors.</p><div style="clear:both;"></div>