[yocto] variable override syntax, where is it documented?
Alexander Kanavin
alexander.kanavin at linux.intel.com
Wed Dec 6 01:09:50 PST 2017
On 12/06/2017 10:58 AM, Bernd wrote:
> I just found out that I can ovverride the line
>
> hostname = "${MACHINE}"
>
> in base-files simply by assigning a value to
>
> hostname_pn-base-files
>
> in my configuration file and it will re-assign it with a higher
> priority than "=".
>
> Now I wonder where this kind of black magic is documented, I don't
> seem to be able to locate any document that explains the "_pn-" syntax
> and I wonder if there are even more such tricks that could be useful
> and am looking for a document that explains them all. Is there such a
> thing?
Yes, of course. This:
http://www.yoctoproject.org/docs/latest/ref-manual/ref-manual.html#var-OVERRIDES
and this:
http://www.yoctoproject.org/docs/2.5/bitbake-user-manual/bitbake-user-manual.html#conditional-syntax-overrides
Alex
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