Re: [PATCH] kbuild: Add KDEB_COMPRESS_LEVEL to control compression level

[Masahiro Yamada]

On Thu, Mar 13, 2025 at 9:38 PM Matt Fleming <matt@xxxxxxxxxxxxxxxx> wrote:
>
> On Fri, Mar 7, 2025 at 3:09 PM Matt Fleming <matt@xxxxxxxxxxxxxxxx> wrote:
> >
> > From: Matt Fleming <mfleming@xxxxxxxxxxxxxx>
> >
> > Give users more control to tradeoff compression time vs compressed size
> > when building debian packages with a new KDEB_COMPRESS_LEVEL option.
>
> Ping? Any feedback on this patch?

Sorry, I missed this.
I would have missed this completely without your ping
because this was not sent to linux-kbuild ML.
(sometimes I still notice, but sometimes I do not.
Including linux-kbuild ML increases the probability of my notice)


"man dpkg-deb" describes

       DPKG_DEB_COMPRESSOR_LEVEL
           Sets the compressor level to use (since dpkg 1.21.10).

           The -z option overrides this value.


This provides the same functionality as KDEB_COMPRESS_LEVEL
you are adding.


If you use dpkg>=1.21.10, you can do

 $  DPKG_DEB_COMPRESSOR_LEVEL=1 make bindeb-pkg


KDEB_COMPRESS_LEVEL might be useful for users of old dpkg
versions, but I do not want to add an option which we know is already
duplicated, since we would end up with removing it again sooner or later.


I even want to remove the currently-supported KDEB_COMPRESS
at some point in the future.
So, I submitted a patch as a reminder for myself:
https://lore.kernel.org/linux-kbuild/20250314095337.2209653-1-masahiroy@xxxxxxxxxx/T/#u





--
Best Regards
Masahiro Yamada