linux-yocto/scripts/package/builddeb

#!/bin/sh

builddeb 1.3

Copyright 2003 Wichert Akkerman wichert@wiggy.net

Simple script to generate a deb package for a Linux kernel. All the

complexity of what to do with a kernel after it is installed or removed

is left to other scripts and packages: they can install scripts in the

/etc/kernel/{pre,post}{inst,rm}.d/ directories (or an alternative location

specified in KDEB_HOOKDIR) that will be called on package install and

removal.

set -e

is_enabled() { grep -q "^$1=y" include/config/auto.conf }

if_enabled_echo() { if is_enabled "$1"; then echo -n "$2" elif [ $# -ge 3 ]; then echo -n "$3" fi }

create_package() { local pname="$1" pdir="$2"

mkdir -m 755 -p "$pdir/DEBIAN"
mkdir -p "$pdir/usr/share/doc/$pname"
cp debian/copyright "$pdir/usr/share/doc/$pname/"
cp debian/changelog "$pdir/usr/share/doc/$pname/changelog.Debian"
gzip -9 "$pdir/usr/share/doc/$pname/changelog.Debian"
sh -c "cd '$pdir'; find . -type f ! -path './DEBIAN/*' -printf '%P\0' \
	| xargs -r0 md5sum > DEBIAN/md5sums"

# Fix ownership and permissions
chown -R root:root "$pdir"
chmod -R go-w "$pdir"
# in case we are in a restrictive umask environment like 0077
chmod -R a+rX "$pdir"

# Create the package
dpkg-gencontrol -p$pname -P"$pdir"
dpkg-deb ${KDEB_COMPRESS:+-Z$KDEB_COMPRESS} --build "$pdir" ..

}

deploy_kernel_headers () { pdir=$1

rm -rf $pdir

(
	cd $srctree
	find . arch/$SRCARCH -maxdepth 1 -name Makefile\*
	find include scripts -type f -o -type l
	find arch/$SRCARCH -name module.lds -o -name Kbuild.platforms -o -name Platform
	find $(find arch/$SRCARCH -name include -o -name scripts -type d) -type f
) > debian/hdrsrcfiles

{
	if is_enabled CONFIG_STACK_VALIDATION; then
		echo tools/objtool/objtool
	fi

	find arch/$SRCARCH/include Module.symvers include scripts -type f

	if is_enabled CONFIG_GCC_PLUGINS; then
		find scripts/gcc-plugins -name \*.so
	fi
} > debian/hdrobjfiles

destdir=$pdir/usr/src/linux-headers-$version
mkdir -p $destdir
tar -c -f - -C $srctree -T debian/hdrsrcfiles | tar -xf - -C $destdir
tar -c -f - -T debian/hdrobjfiles | tar -xf - -C $destdir
rm -f debian/hdrsrcfiles debian/hdrobjfiles

# copy .config manually to be where it's expected to be
cp $KCONFIG_CONFIG $destdir/.config

mkdir -p $pdir/lib/modules/$version/
ln -s /usr/src/linux-headers-$version $pdir/lib/modules/$version/build

}

deploy_libc_headers () { pdir=$1

rm -rf $pdir

$MAKE -f $srctree/Makefile headers
$MAKE -f $srctree/Makefile headers_install INSTALL_HDR_PATH=$pdir/usr

# move asm headers to /usr/include/<libc-machine>/asm to match the structure
# used by Debian-based distros (to support multi-arch)
host_arch=$(dpkg-architecture -a$(cat debian/arch) -qDEB_HOST_MULTIARCH)
mkdir $pdir/usr/include/$host_arch
mv $pdir/usr/include/asm $pdir/usr/include/$host_arch/

}

version=$KERNELRELEASE tmpdir=debian/linux-image dbg_dir=debian/linux-image-dbg packagename=linux-image-$version dbg_packagename=$packagename-dbg

if [ "$ARCH" = "um" ] ; then packagename=user-mode-linux-$version fi

Not all arches have the same installed path in debian

XXX: have each arch Makefile export a variable of the canonical image install

path instead

case $ARCH in um) installed_image_path="usr/bin/linux-$version" ;; parisc|mips|powerpc) installed_image_path="boot/vmlinux-$version" ;; *) installed_image_path="boot/vmlinuz-$version" esac

BUILD_DEBUG=$(if_enabled_echo CONFIG_DEBUG_INFO Yes)

Setup the directory structure

rm -rf "$tmpdir" "$dbg_dir" debian/files mkdir -m 755 -p "$tmpdir/DEBIAN" mkdir -p "$tmpdir/lib" "$tmpdir/boot"

Install the kernel

if [ "$ARCH" = "um" ] ; then mkdir -p "$tmpdir/usr/lib/uml/modules/$version" "$tmpdir/usr/bin" "$tmpdir/usr/share/doc/$packagename" cp System.map "$tmpdir/usr/lib/uml/modules/$version/System.map" cp $KCONFIG_CONFIG "$tmpdir/usr/share/doc/$packagename/config" gzip "$tmpdir/usr/share/doc/$packagename/config" else cp System.map "$tmpdir/boot/System.map-$version" cp $KCONFIG_CONFIG "$tmpdir/boot/config-$version" fi cp "$($MAKE -s -f $srctree/Makefile image_name)" "$tmpdir/$installed_image_path"

if is_enabled CONFIG_OF_EARLY_FLATTREE; then # Only some architectures with OF support have this target if [ -d "${srctree}/arch/$SRCARCH/boot/dts" ]; then $MAKE -f $srctree/Makefile INSTALL_DTBS_PATH="$tmpdir/usr/lib/$packagename" dtbs_install fi fi

if is_enabled CONFIG_MODULES; then INSTALL_MOD_PATH="$tmpdir" $MAKE -f $srctree/Makefile modules_install rm -f "$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" fi if [ -n "$BUILD_DEBUG" ] ; then for module in $(find $tmpdir/lib/modules/ -name *.ko -printf '%P\n'); do module=lib/modules/$module mkdir -p $(dirname $dbg_dir/usr/lib/debug/$module) # only keep debug symbols in the debug file $OBJCOPY --only-keep-debug $tmpdir/$module $dbg_dir/usr/lib/debug/$module # strip original module from debug symbols $OBJCOPY --strip-debug $tmpdir/$module # then add a link to those $OBJCOPY --add-gnu-debuglink=$dbg_dir/usr/lib/debug/$module $tmpdir/$module done

	# resign stripped modules
	if is_enabled CONFIG_MODULE_SIG_ALL; then
		INSTALL_MOD_PATH="$tmpdir" $MAKE -f $srctree/Makefile modules_sign
	fi
fi

fi

Install the maintainer scripts

Note: hook scripts under /etc/kernel are also executed by official Debian

kernel packages, as well as kernel packages built using make-kpkg.

make-kpkg sets $INITRD to indicate whether an initramfs is wanted, and

so do we; recent versions of dracut and initramfs-tools will obey this.

debhookdir=${KDEB_HOOKDIR:-/etc/kernel} for script in postinst postrm preinst prerm ; do mkdir -p "$tmpdir$debhookdir/$script.d" cat < "$tmpdir/DEBIAN/$script" #!/bin/sh

set -e

Pass maintainer script parameters to hook scripts

export DEB_MAINT_PARAMS="$*"

Tell initramfs builder whether it's wanted

export INITRD=$(if_enabled_echo CONFIG_BLK_DEV_INITRD Yes No)

test -d $debhookdir/$script.d && run-parts --arg="$version" --arg="/$installed_image_path" $debhookdir/$script.d exit 0 EOF chmod 755 "$tmpdir/DEBIAN/$script" done

if [ "$ARCH" != "um" ]; then deploy_kernel_headers debian/linux-headers create_package linux-headers-$version debian/linux-headers

deploy_libc_headers debian/linux-libc-dev
create_package linux-libc-dev debian/linux-libc-dev

fi

create_package "$packagename" "$tmpdir"

if [ -n "$BUILD_DEBUG" ] ; then # Build debug package # Different tools want the image in different locations # perf mkdir -p $dbg_dir/usr/lib/debug/lib/modules/$version/ cp vmlinux $dbg_dir/usr/lib/debug/lib/modules/$version/ # systemtap mkdir -p $dbg_dir/usr/lib/debug/boot/ ln -s ../lib/modules/$version/vmlinux $dbg_dir/usr/lib/debug/boot/vmlinux-$version # kdump-tools ln -s lib/modules/$version/vmlinux $dbg_dir/usr/lib/debug/vmlinux-$version create_package "$dbg_packagename" "$dbg_dir" fi

exit 0