ARC_INIT is set on boards that don't have it, triggering Kconfig warnings

[ulfalizer]

The ARC_INIT symbol is only defined on the intel_quark SoC (see the symbol reference), but is set by samples/subsys/ipc/ipm_mailbox/ap/prj.conf, giving a Kconfig warning for assigning an undefined symbol on these boards:

qemu_xtensa
qemu_riscv32
native_posix
qemu_nios2
frdm_k64f
qemu_cortex
lpcxpresso54114_m0
bbc_microbit

Should I just whitelist ARC_INIT warnings (about to turn many warnings into errors), or is there something worthwhile to do here?

[SebastianBoe]

This is a bug in the sample.yaml file.

This sample only runs on the intel_quark SoC.

This should have been enforced by

tests:
  test:
    filter: CONFIG_SOC_QUARK_SE_C1000
    tags: samples ipm

I can't explain why it isn't.

[SebastianBoe]

Ah, I see @nashif has explained this.

sanitycheck runs kconfig (indirectly I assume) to determine if CONFIG_SOC_QUARK_SE_C1000 is set. When it does this, it causes a configuration error.

[ulfalizer]

Wonder if platform_whitelist would help here, similar to the fix in eafcba5.