linux-kernel - Re: [PATCH v2] kbuild: Fix link to headers in 'make deb-pkg'

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Date:	Tue, 14 Feb 2012 02:49:13 +0000
From:	Ben Hutchings <ben@...adent.org.uk>
To:	Joerg Roedel <joerg.roedel@....com>
Cc:	linux-kernel@...r.kernel.org, Michal Marek <mmarek@...e.cz>,
	maximilian attems <max@...o.at>,
	debian-kernel@...ts.debian.org, linux-kbuild@...r.kernel.org
Subject: Re: [PATCH v2] kbuild: Fix link to headers in 'make deb-pkg'

On Mon, 2012-02-13 at 15:48 +0100, Joerg Roedel wrote:
> The Link to the kernel header files in the debian packages
> point to the original build directory. This is a bad choice
> if the packages were installed on a different machine. Fix
> this in by manually re-creating the link in the builddeb
> script.
> 
> Cc: Michal Marek <mmarek@...e.cz>
> Cc: maximilian attems <max@...o.at>
> Cc: Ben Hutchings <ben@...adent.org.uk>
> Cc: debian-kernel@...ts.debian.org
> Cc: linux-kbuild@...r.kernel.org
> Signed-off-by: Joerg Roedel <joerg.roedel@....com>

This looks good for !UML.

I wonder about the UML case though.  Did you test it?  In 3.3-rc3,
'make headers_install' is broken.  But if I suppress the header check,
the resulting packages have links in the right places.

I'm also unconvinced that anyone will be interested in building an OOT
module for UML; and if they do their build script or makefile will use
'make -C /lib/modules/<version>/build' which won't work.  Maybe for UML
we should only build the 'image' package?

Ben.

> ---
>  scripts/package/builddeb |    9 +++++++++
>  1 files changed, 9 insertions(+), 0 deletions(-)
> 
> diff --git a/scripts/package/builddeb b/scripts/package/builddeb
> index f6cbc3d..fc3f76a 100644
> --- a/scripts/package/builddeb
> +++ b/scripts/package/builddeb
> @@ -97,6 +97,7 @@ mkdir -m 755 -p "$libc_headers_dir/DEBIAN"
>  mkdir -p "$libc_headers_dir/usr/share/doc/$libc_headers_packagename"
>  mkdir -m 755 -p "$kernel_headers_dir/DEBIAN"
>  mkdir -p "$kernel_headers_dir/usr/share/doc/$kernel_headers_packagename"
> +mkdir -p "$kernel_headers_dir/lib/modules/$version/"
>  if [ "$ARCH" = "um" ] ; then
>  	mkdir -p "$tmpdir/usr/lib/uml/modules/$version" "$tmpdir/usr/bin"
>  fi
> @@ -121,6 +122,8 @@ fi
>  
>  if grep -q '^CONFIG_MODULES=y' .config ; then
>  	INSTALL_MOD_PATH="$tmpdir" make KBUILD_SRC= modules_install
> +	rm -f "$tmpdir/lib/modules/$version/build"
> +	rm -f "$tmpdir/lib/modules/$version/source"
>  	if [ "$ARCH" = "um" ] ; then
>  		mv "$tmpdir/lib/modules/$version"/* "$tmpdir/usr/lib/uml/modules/$version/"
>  		rmdir "$tmpdir/lib/modules/$version"
> @@ -245,6 +248,12 @@ destdir=$kernel_headers_dir/usr/src/linux-headers-$version
>  mkdir -p "$destdir"
>  (cd $srctree; tar -c -f - -T /tmp/files$$) | (cd $destdir; tar -xf -)
>  (cd $objtree; tar -c -f - -T /tmp/objfiles$$) | (cd $destdir; tar -xf -)
> +ln -sf "/usr/src/linux-headers-$version" "$kernel_headers_dir/lib/modules/$version/build"
> +if [ "$ARCH" = "um" ] ; then
> +	mkdir -p "$kernel_headers_dir/usr/lib/uml/modules/$version/"
> +	mv "$kernel_headers_dir/lib/modules/$version"/* "$kernel_headers_dir/usr/lib/uml/modules/$version/"
> +	rmdir "$kernel_headers_dir/lib/modules/$version"
> +fi
>  rm -f /tmp/files$$ /tmp/objfiles$$
>  arch=$(dpkg --print-architecture)
>  

-- 
Ben Hutchings
Beware of programmers who carry screwdrivers. - Leonard Brandwein

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