https://devzone.nordicsemi.com/f/nordic-q-a/37080/linker-unable-to-find-functions-in-objectThe project is cobbled together, but starts from TWIsensor in the SDK 14 examples. The project is compiled with the gcc toolchain which has not given me any trouble. The project compiles but the linker is unable to find functions within the object fileen-USTelligent Community 13Thu, 02 Aug 2018 15:26:08 GMThttps://devzone.nordicsemi.com/thread/142670?ContentTypeID=1Thu, 02 Aug 2018 15:26:08 GMT137ad170-7792-4731-bb38-c0d22fbe4515:69bd7671-d029-456d-8f92-540407a8d0d3Cy<p>Kristin,</p> <p></p> <p>Way to go genius, that was it! Thank you!</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/142531?ContentTypeID=1Thu, 02 Aug 2018 08:00:09 GMT137ad170-7792-4731-bb38-c0d22fbe4515:fcaeb0ab-ed1e-453d-bb10-d6168b85f712FormerMember<p>If you are using some modules/drivers from the SDK, they need to be enabled in sdk_config.h. Could you double check that the modules/drivers have been enabled?</p> <p>&nbsp;</p> <p>Since the project is building, I would assume that you have added the path to GPIO.c in the makefile?</p> <p><pre class="ui-code" data-mode="text"># Source files common to all targets SRC_FILES += \ $(SDK_ROOT)/components/libraries/experimental_log/src/nrf_log_frontend.c \ $(SDK_ROOT)/components/boards/boards.c \ $(SDK_ROOT)/components/libraries/util/app_error.c \ $(SDK_ROOT)/components/libraries/util/app_error_weak.c \ $(SDK_ROOT)/components/libraries/util/app_util_platform.c \ .. $(SDK_ROOT)/path_to_custom_gpio_file/GPIO.c \</pre></p><div style="clear:both;"></div>