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SubjectRe: [RFC PATCH] kbuild: add variables for compression tools
Date
It seems that I missed a couple of tar commands in the patch:
scripts/Makefile.package
scripts/package/buildtar

On 5/15/20 5:20 AM, Masahiro Yamada wrote:
> On Thu, May 14, 2020 at 10:14 PM Denis Efremov <efremov@linux.com> wrote:
>>
>
> commit 5054e88a7934d5ff5ec14231c8b8676161bb45fa
> Author: Paul Eggert <eggert@cs.ucla.edu>
> Date: Mon Mar 16 14:25:17 2015 -0700
>
> gzip: make the GZIP env var obsolescent

Other implementations can depend on this.
pigz still parses GZIP env var:
https://github.com/madler/pigz/blob/master/pigz.c#L4346

>
> Some possible options I came up with:
>
>
> [1] Use KGZIP for now, but BZIP2, XZ, etc. for the others.
>
> (Then, rename KGZIP to GZIP when the time comes)
>
>
> [2] Do not take this patch
>
> The whole build process is parallelized
> by 'make -j $(nproc)'.
>
> If you are still eager to use pigz instead gzip,
> use a symbolic link or a wrapper shell script.
>
> $ ln -s /usr/bin/pigz /$HOME/bin/gzip
> $ PATH="$HOME/bin:$PATH"
>

[3] GZIP at frontend, KGZIP or _GZIP internally? Something like:

$ cat Makefile
GZIP=gzip
override KGZIP=$(GZIP) # optional overrdide. Used to force GZIP value
# in case: make KGZIP=test

unexport GZIP
export KGZIP

default:
@env | grep GZIP

$ make GZIP=test
KGZIP=test

Thanks,
Denis

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