#!/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
create_package() {
local pname="$1" pdir="$2"
cp debian/copyright "$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"
# Attempt to find the correct Debian architecture
local forcearch="" debarch=""
case "$UTS_MACHINE" in
i386|ia64|alpha)
debarch="$UTS_MACHINE" ;;
x86_64)
debarch=amd64 ;;
sparc*)
debarch=sparc ;;
s390*)
debarch=s390 ;;
ppc*)
debarch=powerpc ;;
parisc*)
debarch=hppa ;;
mips*)
debarch=mips$(grep -q CPU_LITTLE_ENDIAN=y $KCONFIG_CONFIG && echo el) ;;
arm*)
debarch=arm$(grep -q CONFIG_AEABI=y $KCONFIG_CONFIG && echo el) ;;
*)
echo "" >&2
echo "** ** ** WARNING ** ** **" >&2
echo "" >&2
echo "Your architecture doesn't have it's equivalent" >&2
echo "Debian userspace architecture defined!" >&2
echo "Falling back to using your current userspace instead!" >&2
echo "Please add support for $UTS_MACHINE to ${0} ..." >&2
echo "" >&2
esac
if [ -n "$KBUILD_DEBARCH" ] ; then
debarch="$KBUILD_DEBARCH"
fi
if [ -n "$debarch" ] ; then
forcearch="-DArchitecture=$debarch"
fi
# Create the package
dpkg-gencontrol -isp $forcearch -Vkernel:debarch="${debarch:-$(dpkg --print-architecture)}" -p$pname -P"$pdir"
dpkg --build "$pdir" ..
}
# Some variables and settings used throughout the script
version=$KERNELRELEASE
revision=$(cat .version)
if [ -n "$KDEB_PKGVERSION" ]; then
packageversion=$KDEB_PKGVERSION
else
packageversion=$version-$revision
fi
tmpdir="$objtree/debian/tmp"
fwdir="$objtree/debian/fwtmp"
kernel_headers_dir="$objtree/debian/hdrtmp"
libc_headers_dir="$objtree/debian/headertmp"
dbg_dir="$objtree/debian/dbgtmp"
packagename=linux-image-$version
fwpackagename=linux-firmware-image-$version
kernel_headers_packagename=linux-headers-$version
libc_headers_packagename=linux-libc-dev
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="$(grep -s '^CONFIG_DEBUG_INFO=y' $KCONFIG_CONFIG || true)"
# Setup the directory structure
rm -rf "$tmpdir" "$fwdir" "$kernel_headers_dir" "$libc_headers_dir" "$dbg_dir"
mkdir -m 755 -p "$tmpdir/DEBIAN"
mkdir -p "$tmpdir/lib" "$tmpdir/boot" "$tmpdir/usr/share/doc/$packagename"
mkdir -m 755 -p "$fwdir/DEBIAN"
mkdir -p "$fwdir/lib/firmware/$version/" "$fwdir/usr/share/doc/$fwpackagename"
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
if [ -n "$BUILD_DEBUG" ] ; then
mkdir -p "$dbg_dir/usr/share/doc/$dbg_packagename"
mkdir -m 755 -p "$dbg_dir/DEBIAN"
fi
# Build and install the kernel
if [ "$ARCH" = "um" ] ; then
$MAKE linux
cp System.map "$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
# Not all arches include the boot path in KBUILD_IMAGE
if [ -e $KBUILD_IMAGE ]; then
cp $KBUILD_IMAGE "$tmpdir/$installed_image_path"
else
cp arch/$ARCH/boot/$KBUILD_IMAGE "$tmpdir/$installed_image_path"
fi
if grep -q '^CONFIG_MODULES=y' $KCONFIG_CONFIG ; then
INSTALL_MOD_PATH="$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"
fi
if [ -n "$BUILD_DEBUG" ] ; then
(
cd $tmpdir
for module in $(find lib/modules/ -name *.ko); do
mkdir -p $(dirname $dbg_dir/usr/lib/debug/$module)
# only keep debug symbols in the debug file
objcopy --only-keep-debug $module $dbg_dir/usr/lib/debug/$module
# strip original module from debug symbols
objcopy --strip-debug $module
# then add a link to those
objcopy --add-gnu-debuglink=$dbg_dir/usr/lib/debug/$module $module
done
)
fi
fi
if [ "$ARCH" != "um" ]; then
$MAKE headers_check KBUILD_SRC=
$MAKE headers_install KBUILD_SRC= INSTALL_HDR_PATH="$libc_headers_dir/usr"
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}
if grep -q '^CONFIG_BLK_DEV_INITRD=y' $KCONFIG_CONFIG; then
want_initrd=Yes
else
want_initrd=No
fi
for script in postinst postrm preinst prerm ; do
mkdir -p "$tmpdir$debhookdir/$script.d"
cat <<EOF > "$tmpdir/DEBIAN/$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=$want_initrd
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
# Try to determine maintainer and email values
if [ -n "$DEBEMAIL" ]; then
email=$DEBEMAIL
elif [ -n "$EMAIL" ]; then
email=$EMAIL
else
email=$(id -nu)@$(hostname -f)
fi
if [ -n "$DEBFULLNAME" ]; then
name=$DEBFULLNAME
elif [ -n "$NAME" ]; then
name=$NAME
else
name="Anonymous"
fi
maintainer="$name <$email>"
# Generate a simple changelog template
cat <<EOF > debian/changelog
linux-upstream ($packageversion) unstable; urgency=low
* Custom built Linux kernel.
-- $maintainer $(date -R)
EOF
# Generate copyright file
cat <<EOF > debian/copyright
This is a packacked upstream version of the Linux kernel.
The sources may be found at most Linux ftp sites, including:
ftp://ftp.kernel.org/pub/linux/kernel
Copyright: 1991 - 2009 Linus Torvalds and others.
The git repository for mainline kernel development is at:
git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6.git
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; version 2 dated June, 1991.
On Debian GNU/Linux systems, the complete text of the GNU General Public
License version 2 can be found in \`/usr/share/common-licenses/GPL-2'.
EOF
# Generate a control file
cat <<EOF > debian/control
Source: linux-upstream
Section: kernel
Priority: optional
Maintainer: $maintainer
Standards-Version: 3.8.4
Homepage: http://www.kernel.org/
EOF
if [ "$ARCH" = "um" ]; then
cat <<EOF >> debian/control
Package: $packagename
Provides: linux-image, linux-image-2.6, linux-modules-$version
Architecture: any
Description: User Mode Linux kernel, version $version
User-mode Linux is a port of the Linux kernel to its own system call
interface. It provides a kind of virtual machine, which runs Linux
as a user process under another Linux kernel. This is useful for
kernel development, sandboxes, jails, experimentation, and
many other things.
.
This package contains the Linux kernel, modules and corresponding other
files, version: $version.
EOF
else
cat <<EOF >> debian/control
Package: $packagename
Provides: linux-image, linux-image-2.6, linux-modules-$version
Suggests: $fwpackagename
Architecture: any
Description: Linux kernel, version $version
This package contains the Linux kernel, modules and corresponding other
files, version: $version.
EOF
fi
# Build header package
(cd $srctree; find . -name Makefile\* -o -name Kconfig\* -o -name \*.pl > "$objtree/debian/hdrsrcfiles")
(cd $srctree; find arch/$SRCARCH/include include scripts -type f >> "$objtree/debian/hdrsrcfiles")
(cd $objtree; find arch/$SRCARCH/include Module.symvers include scripts -type f >> "$objtree/debian/hdrobjfiles")
destdir=$kernel_headers_dir/usr/src/linux-headers-$version
mkdir -p "$destdir"
(cd $srctree; tar -c -f - -T "$objtree/debian/hdrsrcfiles") | (cd $destdir; tar -xf -)
(cd $objtree; tar -c -f - -T "$objtree/debian/hdrobjfiles") | (cd $destdir; tar -xf -)
(cd $objtree; cp $KCONFIG_CONFIG $destdir/.config) # copy .config manually to be where it's expected to be
ln -sf "/usr/src/linux-headers-$version" "$kernel_headers_dir/lib/modules/$version/build"
rm -f "$objtree/debian/hdrsrcfiles" "$objtree/debian/hdrobjfiles"
cat <<EOF >> debian/control
Package: $kernel_headers_packagename
Provides: linux-headers, linux-headers-2.6
Architecture: any
Description: Linux kernel headers for $KERNELRELEASE on \${kernel:debarch}
This package provides kernel header files for $KERNELRELEASE on \${kernel:debarch}
.
This is useful for people who need to build external modules
EOF
# Do we have firmware? Move it out of the way and build it into a package.
if [ -e "$tmpdir/lib/firmware" ]; then
mv "$tmpdir/lib/firmware"/* "$fwdir/lib/firmware/$version/"
rmdir "$tmpdir/lib/firmware"
cat <<EOF >> debian/control
Package: $fwpackagename
Architecture: all
Description: Linux kernel firmware, version $version
This package contains firmware from the Linux kernel, version $version.
EOF
create_package "$fwpackagename" "$fwdir"
fi
cat <<EOF >> debian/control
Package: $libc_headers_packagename
Section: devel
Provides: linux-kernel-headers
Architecture: any
Description: Linux support headers for userspace development
This package provides userspaces headers from the Linux kernel. These headers
are used by the installed headers for GNU glibc and other system libraries.
EOF
if [ "$ARCH" != "um" ]; then
create_package "$kernel_headers_packagename" "$kernel_headers_dir"
create_package "$libc_headers_packagename" "$libc_headers_dir"
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
cat <<EOF >> debian/control
Package: $dbg_packagename
Section: debug
Provides: linux-debug, linux-debug-$version
Architecture: any
Description: Linux kernel debugging symbols for $version
This package will come in handy if you need to debug the kernel. It provides
all the necessary debug symbols for the kernel and its modules.
EOF
create_package "$dbg_packagename" "$dbg_dir"
fi
exit 0
