Re: [PATCH] builddeb: generate multi-arch friendly linux-libc-dev package

[Masahiro Yamada <yamada.masahiro@socionext.com>]

CCed a couple of people.

On Mon, Jun 17, 2019 at 3:15 PM Cedric Hombourger
<Cedric_Hombourger@mentor.com> wrote:
>
> Debian-based distributions place libc header files in a machine
> specific directory (/usr/include/<libc-machine>) instead of
> /usr/include/asm to support installation of the linux-libc-dev
> package from multiple architectures. Move headers installed by
> "make headers_install" accordingly.
>
> Signed-off-by: Cedric Hombourger <Cedric_Hombourger@mentor.com>
> Reviewed-by: Henning Schild <henning.schild@siemens.com>
> ---
>  scripts/package/builddeb | 5 +++++
>  1 file changed, 5 insertions(+)
>
> diff --git a/scripts/package/builddeb b/scripts/package/builddeb
> index b03dd56a4782..8f7afb3a84e9 100755
> --- a/scripts/package/builddeb
> +++ b/scripts/package/builddeb
> @@ -132,6 +132,11 @@ fi
>  if [ "$ARCH" != "um" ]; then
>         $MAKE -f $srctree/Makefile headers_check
>         $MAKE -f $srctree/Makefile headers_install INSTALL_HDR_PATH="$libc_headers_dir/usr"
> +       # move asm headers to /usr/include/<libc-machine>/asm to match the structure
> +       # used by Debian-based distros (to support multi-arch)
> +       libc_mach=$($CC -dumpmachine)
> +       mkdir $libc_headers_dir/usr/include/$libc_mach
> +       mv $libc_headers_dir/usr/include/asm $libc_headers_dir/usr/include/$libc_mach/
>  fi
>
>  # Install the maintainer scripts


I am not sure but,
I just worried about the backward compatibility...
Was this previously broken?

I guess debian is using own control file
instead of the one in upstream kernel.
So, this is almost a matter for developers, I think.

How did debian-base distros managed this before,
and will this introduce no breakage?

Ben,
Could you comment on this?


-- 
Best Regards
Masahiro Yamada