RE: How to build nrf52840 dongles with customized open-thread library

Edvin — Fri, 07 Nov 2025 23:06:06 GMT

Hello,

In order to make the Matter samples (or any samples) use the source files for OpenThread instead of the pre-built library, you can add

CONFIG_OPENTHREAD_SOURCES=y

in your prj.conf. This should make it use the source files for OpenThread.

Alternatively, if you want to select a different version of the pre-built libraries, you can set one of these:

CONFIG_OPENTHREAD_NORDIC_LIBRARY_MASTER=y
CONFIG_OPENTHREAD_NORDIC_LIBRARY_FTD=y
CONFIG_OPENTHREAD_NORDIC_LIBRARY_MTD=y
CONFIG_OPENTHREAD_NORDIC_LIBRARY_RCP=y

(You can only choose one of these at the time)

You can read more about them here:

https://docs.nordicsemi.com/bundle/ncs-latest/page/nrf/protocols/thread/configuring.html#select_openthread_libraries

Best regards,

Edvin

RE: How to build nrf52840 dongles with customized open-thread library

Jack Chen — Thu, 06 Nov 2025 23:45:41 GMT

Or, are there instructions to build the open-thread lib and replace the default prebuilt ones?