nrf5340-dk empty_app_core won't build fresh install

[dnear1]

I freshly installed Nordic Edition SES v5.50c and  nrf sdk 1.6.1 on my machine and opened the empty_app_core with the Open nrf-sdk project option, selecting nrf5340dk_nrf5340_cpuappns and Clean Build Directory.  When I try to build without making any changes, I'm getting two build errors that I can't seem to find any solutions for.

  Compiling ‘empty_file.c’
  zephyr\zephyr_prebuilt.elf does not exist.
  Linking ‘zephyr_prebuilt.elf’
    zephyr/libzephyr.a(secure_services_ns.c.obj): in function `before_nse':
    undefined reference to `k_sched_lock'
    zephyr/libzephyr.a(secure_services_ns.c.obj): in function `after_nse':
    undefined reference to `k_sched_unlock'
    ld returned 1 exit status
Build failed

Any thoughts as to what I need to change to get this to build?

[Marte Myrvold]

Hi,

The build target for the empty_app_core sample is nrf5340dk_nrf5340_cpuapp, without ns at the end, as it is to be built as secure and not non-secure. Do you still get the error if you select this as build target?

Best regards,

Marte