[PATCH 2/2] kbuild: allow overriding compression tools

[Sascha Hauer]

On Thu, Jan 16, 2025 at 03:09:24PM +0100, Ahmad Fatoum wrote:
> barebox proper is usually compressed and this introduces a dependency on
> an outside host tool depending on the chosen compression algo.
> 
> So far, we expected the utility to be in PATH, but to allow build
> systems to place it elsewhere, let's copy what Linux does and adopt a number
> of Make variable that can be overridden from the outside.
> 
> Signed-off-by: Ahmad Fatoum <a.fatoum at pengutronix.de>
> ---
>  Makefile             |  6 ++++++
>  scripts/Makefile.lib | 12 ++++++------
>  scripts/xz_wrap.sh   |  5 +++--
>  3 files changed, 15 insertions(+), 8 deletions(-)
> 
> diff --git a/Makefile b/Makefile
> index 3487aba201b9..81cab701230e 100644
> --- a/Makefile
> +++ b/Makefile
> @@ -440,6 +440,12 @@ PYTHON3		= python3
>  CHECK		= sparse
>  MKIMAGE		= mkimage
>  BASH		= bash
> +KGZIP		= gzip
> +KBZIP2		= bzip2
> +KLZOP		= lzop
> +LZMA		= lzma
> +LZ4		= lz4
> +XZ		= xz

Added missing

export KGZIP KBZIP2 KLZOP LZMA LZ4 XZ

to make this patch work.

Sascha

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