https://devzone.nordicsemi.com/f/nordic-q-a/84716/best-practice-advice-for-zephyr-debug-and-release-configurationsI am mid-way through development with the nRF52840 DK and Zephyr using the VSCode extension. I&#39;m using v1.8.0 of the SDK. I am looking for advice on setting my configuration up for both debug and release builds. Right now, when I do a build, I geten-USTelligent Community 13Mon, 14 Feb 2022 15:38:46 GMThttps://devzone.nordicsemi.com/thread/352948?ContentTypeID=1Mon, 14 Feb 2022 15:38:46 GMT137ad170-7792-4731-bb38-c0d22fbe4515:4661a3cd-0b0b-4dd9-9115-f50621ec7bb0&#216;ivind<p>Hi,</p> <p>&quot;-Og&quot; is the flag for Debug optimization, so that seems correct to me.</p> <p>Yes, you make a .conf file for each build type, and choose between them when you create a build configuration. That is also how it is done in our nRF Desktop application: <a href="https://developer.nordicsemi.com/nRF_Connect_SDK/doc/latest/nrf/applications/nrf_desktop/README.html#selecting-a-build-type">https://developer.nordicsemi.com/nRF_Connect_SDK/doc/latest/nrf/applications/nrf_desktop/README.html#selecting-a-build-type</a></p> <p>For compiler optimizations: <a href="https://developer.nordicsemi.com/nRF_Connect_SDK/doc/latest/kconfig/choice_873.html">https://developer.nordicsemi.com/nRF_Connect_SDK/doc/latest/kconfig/choice_873.html</a></p> <p>For debugging you probably want <a href="https://developer.nordicsemi.com/nRF_Connect_SDK/doc/latest/kconfig/CONFIG_DEBUG.html">CONFIG_DEBUG</a> and <a href="https://developer.nordicsemi.com/nRF_Connect_SDK/doc/latest/kconfig/CONFIG_DEBUG_INFO.html">CONFIG_DEBUG_INFO</a>.</p><div style="clear:both;"></div>