RE: nRF54L15 reduce build time

SwRa — Fri, 06 Jun 2025 13:01:53 GMT

Hi Ryan,

A few seps you can incorporate into your application to reduce the build time as well as optimize the memory are as follows:

1. If you don't need MCUboot or other secondary images for development, you can disable them by removing or commenting out related Kconfig options in your prj.conf: CONFIG_BOOTLOADER_MCUBOOT=n

2. If you are not concerned about security during development, you can disable related features in your prj.conf to skip unnecessary configuration and build steps. Eg: CONFIG_MBEDTLS_PSA_CRYPTO_C=n and CONFIG_MBEDTLS_USE_PSA_CRYPTO=n

3. Use minimal build configuration: (For simple applications like Blinky, you can use a minimal prj.conf to reduce the number of drivers, features, and threads included in the build. )

4. Avoid pristine build as discussed in this thread: build time with west for zephyr projects : how to re-build without the 'build setup' phase eg when just recompiling C files

5. You can also configure your project to not sysbuild by default whenever invoking west build. See here: docs.nordicsemi.com/.../sysbuild_configuring_west.html

Regards,

Swathy