RE: What is the proper way to conditionally build?

mej7000 — Mon, 17 Jun 2024 12:54:55 GMT

Thanks! That makes perfect sense.

To reiterate: nrf21540dk_nrf52840.conf will be combined with prj.conf when west build -b nrf21540dk_nrf52840 -d build21540 is executed (and obviously not combined when west build -b nrf52840dk_nrf52840 -d build52840 is executed.)

devzone.nordicsemi.com/.../nrf21540dk_5F00_nrf52840.conf

RE: What is the proper way to conditionally build?

Maria Gilje — Mon, 17 Jun 2024 09:29:28 GMT

Hello,

The proper way is to create a board-specific configuration in <your-project-directory>/boards which you name nrf21540dk_nrf52840.conf. Put the Kconfig symbols you only want for the nRF21540 DK build there. The build system will interpret the extra configuration file as a fragment which is added to the main configuration file (i.e. prj.conf).

See also this documentation for general information on different configuration files: https://docs.nordicsemi.com/bundle/ncs-2.5.0/page/nrf/config_and_build/multi_image.html#permanent_configuration_changes_to_child_images

Best regards,

Maria