[Buildroot] [PATCH] docs/manual: add note about spurious errors duing make printvars

[Arnout Vandecappelle]

On 12/03/2019 14:14, yann.morin at orange.com wrote:
> I'd like the ability to extract many unrelated variables, but not all of
> them either, so maybe we can accept that VARS is a sapce-separated list
> of patterns to extract, à-la:
> 
>     make -s printvars VARS="VAR_1 VAR_2 PAT_1_% PAT_2_%"

 This has worked ever since we introduced VARS...

 Regards,
 Arnout