[yocto] Kernel size above KERNEL_IMAGE_MAXSIZE

[Jaap de Jong]

Hi All,
not sure if I should put this here.
If I define KERNEL_IMAGE_MAXSIZE below my actual kernel size I get this 
ugly error:

ERROR: linux-at91-4.9.28-r0.4 do_sizecheck: Function failed: 
do_sizecheck (log file is located at 
xxx/linux-at91/4.9.28-r0.4/temp/log.do_sizecheck.1370)
ERROR: Logfile of failure stored in: 
xxx/linux-at91/4.9.28-r0.4/temp/log.do_sizecheck.1370
Log data follows:
| DEBUG: Executing shell function do_sizecheck
| xxx/linux-at91/4.9.28-r0.4/temp/run.do_sizecheck.1370: line 117: warn: 
command not found
| WARNING: xxx/linux-at91/4.9.28-r0.4/temp/run.do_sizecheck.1370:1 exit 
127 from 'warn "This kernel $type (size=$size(K) > 2100(K)) is too big 
for your device. Please reduce the size of the kernel by making more of 
it modular."'
| ERROR: Function failed: do_sizecheck (log file is located at 
xxx/linux-at91/4.9.28-r0.4/temp/log.do_sizecheck.1370)
ERROR: Task 
(xxx/meta-atmel/recipes-kernel/linux/linux-at91_4.9.bb:do_sizecheck) 
failed with exit code '1'
NOTE: Tasks Summary: Attempted 1646 tasks of which 1638 didn't need to 
be rerun and 1 failed.

Summary: 1 task failed:
   xxx/meta-atmel/recipes-kernel/linux/linux-at91_4.9.bb:do_sizecheck
Summary: There was 1 ERROR message shown, returning a non-zero exit code.

Either poky/meta/classes/kernel.bbclass should be changed to run 'die' 
instead of 'warn' or in poky/meta/classes/base.bbclass a function 'warn' 
should be added. Not sure which. I tend to the first option: if the 
kernel image is too large then this is an error.

Regards,
Jaap