west build failed due to mcuboot sysbuild

[DKC]

Hi,

With NCS v3.1.0 and Nordic's downstream zephyr ncs-v3.1.0, I got build failure with following message:

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warning: attempt to assign the value 'n' to the undefined symbol MCUBOOT_HARDWARE_DOWNGRADE_PREVENTION

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This failure can be reproduced by building sample 'with_mcuboot'.

Command as below:

west build -p always -b nrf52840dk/nrf52840 zephyr/samples/sysbuild/with_mcuboot --sysbuild

But I can succeed to build it without '--sysbuild'. And BTW, with same system (machine with Ubuntu v22.04 installed) I can build this sample with original 'zephyr' according to 'Getting Started Guide'

docs.zephyrproject.org/.../index.html

[Benjamin]

Thanks. I suspect something may have gone wrong in your system-wide installation of NCS. Did you deviate from the setup steps at any point?

Could you share the build folder generated during the failed build?

[DKC]

Hi Benjamin,

Finally, I found out that the issue is related to the version I've chosen for bootloader/mcuboot.

With source from repo 'https://github.com/nrfconnect/sdk-mcuboot', it can be built successfully.

And my failure case is from repo 'github.com/.../mcuboot'

Sorry for your time on helping me for the debugging.