linux-kernel - Re: [PATCH v2] builddeb: generate multi-arch friendly linux-libc-dev package

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Date:   Thu, 04 Jul 2019 20:49:51 +0100
From:   Ben Hutchings <ben@...adent.org.uk>
To:     Cedric Hombourger <Cedric_Hombourger@...tor.com>
Cc:     yamada.masahiro@...ionext.com, isar-users@...glegroups.com,
        michal.lkml@...kovi.net, linux-kbuild@...r.kernel.org,
        linux-kernel@...r.kernel.org, riku.voipio@...aro.org
Subject: Re: [PATCH v2] builddeb: generate multi-arch friendly
 linux-libc-dev package

On Thu, 2019-07-04 at 21:42 +0200, Cedric Hombourger 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 using Debian's tuple from
> dpkg-architecture.
> 
> Signed-off-by: Cedric Hombourger <Cedric_Hombourger@...tor.com>
> Reviewed-by: Henning Schild <henning.schild@...mens.com>
> Reviewed-by: Ben Hutchings <ben@...adent.org.uk>

I haven't reviewed this version of the patch.

And this doesn't make a multi-arch package; you will have to add a
field to the package's control file too.

Ben.

> ---
>  scripts/package/builddeb | 8 ++++++++
>  scripts/package/mkdebian | 4 ++--
>  2 files changed, 10 insertions(+), 2 deletions(-)
> 
> diff --git a/scripts/package/builddeb b/scripts/package/builddeb
> index b03dd56a4782..15a034e18c37 100755
> --- a/scripts/package/builddeb
> +++ b/scripts/package/builddeb
> @@ -132,6 +132,14 @@ fi
>  if [ "$ARCH" != "um" ]; then
>  	$MAKE -f $srctree/Makefile headers_check
>  	$MAKE -f $srctree/Makefile headers_install INSTALL_HDR_PATH="$libc_headers_dir/usr"
> +	if [ -n "$debarch" ]; then
> +		# move asm headers to /usr/include/<libc-machine>/asm to match the structure
> +		# used by Debian-based distros (to support multi-arch) but only if ARCH was
> +		# translated to Debian's (debarch) - this is done by mkdebian
> +		host_arch=$(dpkg-architecture -a$debarch -qDEB_HOST_MULTIARCH)
> +		mkdir $libc_headers_dir/usr/include/$host_arch
> +		mv $libc_headers_dir/usr/include/asm $libc_headers_dir/usr/include/$host_arch/
> +	fi
>  fi
>  
>  # Install the maintainer scripts
> diff --git a/scripts/package/mkdebian b/scripts/package/mkdebian
> index 8351584cb24e..8ebcb7d67fd2 100755
> --- a/scripts/package/mkdebian
> +++ b/scripts/package/mkdebian
> @@ -212,11 +212,11 @@ cat <<EOF > debian/rules
>  srctree ?= .
>  
>  build:
> -	\$(MAKE) KERNELRELEASE=${version} ARCH=${ARCH} \
> +	\$(MAKE) KERNELRELEASE=${version} ARCH=${ARCH} debarch=${debarch} \
>  	KBUILD_BUILD_VERSION=${revision} -f \$(srctree)/Makefile
>  
>  binary-arch:
> -	\$(MAKE) KERNELRELEASE=${version} ARCH=${ARCH} \
> +	\$(MAKE) KERNELRELEASE=${version} ARCH=${ARCH} debarch=${debarch} \
>  	KBUILD_BUILD_VERSION=${revision} -f \$(srctree)/Makefile intdeb-pkg
>  
>  clean:
-- 
Ben Hutchings
Quantity is no substitute for quality, but it's the only one we've got.



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