undefined reference to `z_impl_k_sem_give' 2.5.1 SDK

RE: undefined reference to `z_impl_k_sem_give' 2.5.1 SDK

Jacques Williams — Sun, 28 Jan 2024 18:49:08 GMT

i added CONFIG_MULTITHREADING=y to C:/ncs/v2.5.1/bootloader/mcuboot/boot/zephyr/prj.conf and it worked

RE: undefined reference to `z_impl_k_sem_give' 2.5.1 SDK

Vidar Berg — Sat, 27 Jan 2024 12:02:14 GMT

So you added CONFIG_MULTITHREADING=y to C:/ncs/v2.5.1/bootloader/mcuboot/boot/zephyr/prj.conf and it still did not work? If so, please check the generated .config file to see whether the symbol actually ended up being enabled or not.

Normally you should avoid changing Kconfig files in the SDK tree. If there are settings you want to change for a child-image such as MCUBoot in this case, you can create a Kconfig fragment/overlay by creating a folder named 'child_image' in your project source directory like this:

Note: you must do a pristine build after adding the mcuboot.conf file for it to be detected by the build system.

Please post the build log if you still get the 'undefined reference' error after verifying that CONFIG_MULTITHREADING is enabled.

RE: undefined reference to `z_impl_k_sem_give' 2.5.1 SDK

Jacques Williams — Sat, 27 Jan 2024 01:26:37 GMT

i got it to build adding it to the prj.conf file.
C:/ncs/v2.5.1/bootloader/mcuboot/boot/zephyr/prj.conf'

Thank You!

RE: undefined reference to `z_impl_k_sem_give' 2.5.1 SDK

Vidar Berg — Mon, 22 Jan 2024 10:11:48 GMT

Hello,

This error is typically raised if you have a bootloader that requires multithreading support but don't have 'CONFIG_MULTITHREADING=y' enabled in the bootloader project. Please enable this Kconfig symbol in your bootloader and see if it fixes the problem.

Best regards,

Vidar