Re: [PATCH] kconfig: prefer toolchain default for debug information choice

[Masahiro Yamada]

On Mon, Nov 25, 2024 at 12:59 AM Thomas Weißschuh <linux@xxxxxxxxxxxxxx> wrote:
>
> Kconfig by default chooses the first entry of a choice setting.
> For the "debug information" choice this is DEBUG_INFO_NONE which
> disables debug information completely.
>
> The kconfig choice itself recommends to use "Toolchain default":
>
>         Choose which version of DWARF debug info to emit. If unsure,
>         select "Toolchain default".
>
> Align the actual configuration with the recommendation by providing an
> explicit default.
>
> This also enables more codepaths from allmodconfig/allyesconfig which
> depend on debug information being available.

Please give me some examples for "more codepaths" enabled by DEBUG_INFO
because this is the opposite to the previous decision.


Commit f9b3cd24578401e7a392974b3353277286e49cee mentions:

  all*config target ends up taking much longer and the output is much larger.
  Having this be "default off" makes sense.



allmodconfig is often used for compile testing in CI/CD.
We need to see the sufficient gain that sacrifices
the build speed.



--
Best Regards
Masahiro Yamada