https://devzone.nordicsemi.com/f/nordic-q-a/66102/nrf5340pdk-with-segger-embedded-studioHello, I am using Segger Embedded Studio IDE v4.52 (64-bit) to develop an application using nRF5340pdk. My question is this, I cannot find any of the Preprocessor or compiler optimisation settings in the IDE. I have looked online and they existeden-USTelligent Community 13Mon, 21 Sep 2020 09:04:50 GMThttps://devzone.nordicsemi.com/thread/270508?ContentTypeID=1Mon, 21 Sep 2020 09:04:50 GMT137ad170-7792-4731-bb38-c0d22fbe4515:c0c358f3-c0dd-473d-9590-3f351f3bd68aLearner<p>Thank you Kenneth for answering my question. This has now led me t o my next question. I created&nbsp;two&nbsp;build configurations&nbsp;a Debug and a Release in SES IDE. I wanted to select the&nbsp; DEBUG_OPTIMIZATIONS level for the Debug build configuration and the SPEED_OPTIMIZATIONS for the Release one. However, when I&nbsp;go back to the configurations using &lt;Edit build configurations...&gt; I find that both Debug and Release configurations are set to the same level i.e. whatever I set the optimisation last. Can you please tell me what I am doing wrong.</p> <p>Thank you.</p> <p>Mohamed Belaroussi</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/270464?ContentTypeID=1Mon, 21 Sep 2020 07:21:38 GMT137ad170-7792-4731-bb38-c0d22fbe4515:1f75475e-f748-4273-afb9-79a7a70d9ddeKenneth<p>Open menuconfig and search for &quot;optimizations&quot;, see below:</p> <p><img src="https://devzone.nordicsemi.com/resized-image/__size/320x240/__key/support-attachments/beef5d1b77644c448dabff31668f3a47-8bf8592a13804b21a1669c116297570a/pastedimage1600672861766v1.png" alt=" " /></p> <p>This can also be set in prj.conf by e.g.&nbsp;<a title="https://developer.nordicsemi.com/nrf_connect_sdk/doc/latest/kconfig/config_debug_optimizations.html" href="https://developer.nordicsemi.com/nRF_Connect_SDK/doc/latest/kconfig/CONFIG_DEBUG_OPTIMIZATIONS.html" rel="noopener noreferrer" target="_blank">CONFIG_DEBUG_OPMTIMIZATIONS=y</a></p><div style="clear:both;"></div>