4 # Copyright 2003 Wichert Akkerman <wichert@wiggy.net>
6 # Simple script to generate a deb package for a Linux kernel. All the
7 # complexity of what to do with a kernel after it is installed or removed
8 # is left to other scripts and packages: they can install scripts in the
9 # /etc/kernel/{pre,post}{inst,rm}.d/ directories (or an alternative location
10 # specified in KDEB_HOOKDIR) that will be called on package install and
16 local pname="$1" pdir="$2"
18 cp debian/copyright "$pdir/usr/share/doc/$pname/"
19 cp debian/changelog "$pdir/usr/share/doc/$pname/changelog.Debian"
20 gzip -9 "$pdir/usr/share/doc/$pname/changelog.Debian"
21 sh -c "cd '$pdir'; find . -type f ! -path './DEBIAN/*' -printf '%P\0' \
22 | xargs -r0 md5sum > DEBIAN/md5sums"
24 # Fix ownership and permissions
25 chown -R root:root "$pdir"
28 # Attempt to find the correct Debian architecture
29 local forcearch="" debarch=""
30 case "$UTS_MACHINE" in
32 debarch="$UTS_MACHINE" ;;
44 debarch=mips$(grep -q CPU_LITTLE_ENDIAN=y $KCONFIG_CONFIG && echo el) ;;
46 debarch=arm$(grep -q CONFIG_AEABI=y $KCONFIG_CONFIG && echo el) ;;
49 echo "** ** ** WARNING ** ** **" >&2
51 echo "Your architecture doesn't have it's equivalent" >&2
52 echo "Debian userspace architecture defined!" >&2
53 echo "Falling back to using your current userspace instead!" >&2
54 echo "Please add support for $UTS_MACHINE to ${0} ..." >&2
57 if [ -n "$KBUILD_DEBARCH" ] ; then
58 debarch="$KBUILD_DEBARCH"
60 if [ -n "$debarch" ] ; then
61 forcearch="-DArchitecture=$debarch"
65 dpkg-gencontrol -isp $forcearch -p$pname -P"$pdir"
66 dpkg --build "$pdir" ..
69 # Some variables and settings used throughout the script
70 version=$KERNELRELEASE
71 revision=$(cat .version)
72 if [ -n "$KDEB_PKGVERSION" ]; then
73 packageversion=$KDEB_PKGVERSION
75 packageversion=$version-$revision
77 tmpdir="$objtree/debian/tmp"
78 fwdir="$objtree/debian/fwtmp"
79 kernel_headers_dir="$objtree/debian/hdrtmp"
80 libc_headers_dir="$objtree/debian/headertmp"
81 dbg_dir="$objtree/debian/dbgtmp"
82 packagename=linux-image-$version
83 fwpackagename=linux-firmware-image-$version
84 kernel_headers_packagename=linux-headers-$version
85 libc_headers_packagename=linux-libc-dev
86 dbg_packagename=$packagename-dbg
88 if [ "$ARCH" = "um" ] ; then
89 packagename=user-mode-linux-$version
92 # Not all arches have the same installed path in debian
93 # XXX: have each arch Makefile export a variable of the canonical image install
97 installed_image_path="usr/bin/linux-$version"
100 installed_image_path="boot/vmlinux-$version"
103 installed_image_path="boot/vmlinuz-$version"
106 BUILD_DEBUG="$(grep -s '^CONFIG_DEBUG_INFO=y' $KCONFIG_CONFIG || true)"
108 # Setup the directory structure
109 rm -rf "$tmpdir" "$fwdir" "$kernel_headers_dir" "$libc_headers_dir" "$dbg_dir"
110 mkdir -m 755 -p "$tmpdir/DEBIAN"
111 mkdir -p "$tmpdir/lib" "$tmpdir/boot" "$tmpdir/usr/share/doc/$packagename"
112 mkdir -m 755 -p "$fwdir/DEBIAN"
113 mkdir -p "$fwdir/lib/firmware/$version/" "$fwdir/usr/share/doc/$fwpackagename"
114 mkdir -m 755 -p "$libc_headers_dir/DEBIAN"
115 mkdir -p "$libc_headers_dir/usr/share/doc/$libc_headers_packagename"
116 mkdir -m 755 -p "$kernel_headers_dir/DEBIAN"
117 mkdir -p "$kernel_headers_dir/usr/share/doc/$kernel_headers_packagename"
118 mkdir -p "$kernel_headers_dir/lib/modules/$version/"
119 if [ "$ARCH" = "um" ] ; then
120 mkdir -p "$tmpdir/usr/lib/uml/modules/$version" "$tmpdir/usr/bin"
122 if [ -n "$BUILD_DEBUG" ] ; then
123 mkdir -p "$dbg_dir/usr/share/doc/$dbg_packagename"
124 mkdir -m 755 -p "$dbg_dir/DEBIAN"
127 # Build and install the kernel
128 if [ "$ARCH" = "um" ] ; then
130 cp System.map "$tmpdir/usr/lib/uml/modules/$version/System.map"
131 cp $KCONFIG_CONFIG "$tmpdir/usr/share/doc/$packagename/config"
132 gzip "$tmpdir/usr/share/doc/$packagename/config"
134 cp System.map "$tmpdir/boot/System.map-$version"
135 cp $KCONFIG_CONFIG "$tmpdir/boot/config-$version"
137 # Not all arches include the boot path in KBUILD_IMAGE
138 if [ -e $KBUILD_IMAGE ]; then
139 cp $KBUILD_IMAGE "$tmpdir/$installed_image_path"
141 cp arch/$ARCH/boot/$KBUILD_IMAGE "$tmpdir/$installed_image_path"
144 if grep -q '^CONFIG_MODULES=y' $KCONFIG_CONFIG ; then
145 INSTALL_MOD_PATH="$tmpdir" $MAKE KBUILD_SRC= modules_install
146 rm -f "$tmpdir/lib/modules/$version/build"
147 rm -f "$tmpdir/lib/modules/$version/source"
148 if [ "$ARCH" = "um" ] ; then
149 mv "$tmpdir/lib/modules/$version"/* "$tmpdir/usr/lib/uml/modules/$version/"
150 rmdir "$tmpdir/lib/modules/$version"
152 if [ -n "$BUILD_DEBUG" ] ; then
155 for module in $(find lib/modules/ -name *.ko); do
156 mkdir -p $(dirname $dbg_dir/usr/lib/debug/$module)
157 # only keep debug symbols in the debug file
158 objcopy --only-keep-debug $module $dbg_dir/usr/lib/debug/$module
159 # strip original module from debug symbols
160 objcopy --strip-debug $module
161 # then add a link to those
162 objcopy --add-gnu-debuglink=$dbg_dir/usr/lib/debug/$module $module
168 if [ "$ARCH" != "um" ]; then
169 $MAKE headers_check KBUILD_SRC=
170 $MAKE headers_install KBUILD_SRC= INSTALL_HDR_PATH="$libc_headers_dir/usr"
173 # Install the maintainer scripts
174 # Note: hook scripts under /etc/kernel are also executed by official Debian
175 # kernel packages, as well as kernel packages built using make-kpkg.
176 # make-kpkg sets $INITRD to indicate whether an initramfs is wanted, and
177 # so do we; recent versions of dracut and initramfs-tools will obey this.
178 debhookdir=${KDEB_HOOKDIR:-/etc/kernel}
179 if grep -q '^CONFIG_BLK_DEV_INITRD=y' $KCONFIG_CONFIG; then
184 for script in postinst postrm preinst prerm ; do
185 mkdir -p "$tmpdir$debhookdir/$script.d"
186 cat <<EOF > "$tmpdir/DEBIAN/$script"
191 # Pass maintainer script parameters to hook scripts
192 export DEB_MAINT_PARAMS="\$*"
194 # Tell initramfs builder whether it's wanted
195 export INITRD=$want_initrd
197 test -d $debhookdir/$script.d && run-parts --arg="$version" --arg="/$installed_image_path" $debhookdir/$script.d
200 chmod 755 "$tmpdir/DEBIAN/$script"
203 # Try to determine maintainer and email values
204 if [ -n "$DEBEMAIL" ]; then
206 elif [ -n "$EMAIL" ]; then
209 email=$(id -nu)@$(hostname -f)
211 if [ -n "$DEBFULLNAME" ]; then
213 elif [ -n "$NAME" ]; then
218 maintainer="$name <$email>"
220 # Generate a simple changelog template
221 cat <<EOF > debian/changelog
222 linux-upstream ($packageversion) unstable; urgency=low
224 * Custom built Linux kernel.
226 -- $maintainer $(date -R)
229 # Generate copyright file
230 cat <<EOF > debian/copyright
231 This is a packacked upstream version of the Linux kernel.
233 The sources may be found at most Linux ftp sites, including:
234 ftp://ftp.kernel.org/pub/linux/kernel
236 Copyright: 1991 - 2009 Linus Torvalds and others.
238 The git repository for mainline kernel development is at:
239 git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6.git
241 This program is free software; you can redistribute it and/or modify
242 it under the terms of the GNU General Public License as published by
243 the Free Software Foundation; version 2 dated June, 1991.
245 On Debian GNU/Linux systems, the complete text of the GNU General Public
246 License version 2 can be found in \`/usr/share/common-licenses/GPL-2'.
249 # Generate a control file
250 cat <<EOF > debian/control
251 Source: linux-upstream
254 Maintainer: $maintainer
255 Standards-Version: 3.8.4
256 Homepage: http://www.kernel.org/
259 if [ "$ARCH" = "um" ]; then
260 cat <<EOF >> debian/control
262 Package: $packagename
263 Provides: linux-image, linux-image-2.6, linux-modules-$version
265 Description: User Mode Linux kernel, version $version
266 User-mode Linux is a port of the Linux kernel to its own system call
267 interface. It provides a kind of virtual machine, which runs Linux
268 as a user process under another Linux kernel. This is useful for
269 kernel development, sandboxes, jails, experimentation, and
272 This package contains the Linux kernel, modules and corresponding other
273 files, version: $version.
277 cat <<EOF >> debian/control
279 Package: $packagename
280 Provides: linux-image, linux-image-2.6, linux-modules-$version
281 Suggests: $fwpackagename
283 Description: Linux kernel, version $version
284 This package contains the Linux kernel, modules and corresponding other
285 files, version: $version.
290 # Build header package
291 (cd $srctree; find . -name Makefile\* -o -name Kconfig\* -o -name \*.pl > "$objtree/debian/hdrsrcfiles")
292 (cd $srctree; find arch/$SRCARCH/include include scripts -type f >> "$objtree/debian/hdrsrcfiles")
293 (cd $objtree; find arch/$SRCARCH/include Module.symvers include scripts -type f >> "$objtree/debian/hdrobjfiles")
294 destdir=$kernel_headers_dir/usr/src/linux-headers-$version
296 (cd $srctree; tar -c -f - -T "$objtree/debian/hdrsrcfiles") | (cd $destdir; tar -xf -)
297 (cd $objtree; tar -c -f - -T "$objtree/debian/hdrobjfiles") | (cd $destdir; tar -xf -)
298 (cd $objtree; cp $KCONFIG_CONFIG $destdir/.config) # copy .config manually to be where it's expected to be
299 ln -sf "/usr/src/linux-headers-$version" "$kernel_headers_dir/lib/modules/$version/build"
300 rm -f "$objtree/debian/hdrsrcfiles" "$objtree/debian/hdrobjfiles"
301 arch=$(dpkg --print-architecture)
303 cat <<EOF >> debian/control
305 Package: $kernel_headers_packagename
306 Provides: linux-headers, linux-headers-2.6
308 Description: Linux kernel headers for $KERNELRELEASE on $arch
309 This package provides kernel header files for $KERNELRELEASE on $arch
311 This is useful for people who need to build external modules
314 # Do we have firmware? Move it out of the way and build it into a package.
315 if [ -e "$tmpdir/lib/firmware" ]; then
316 mv "$tmpdir/lib/firmware"/* "$fwdir/lib/firmware/$version/"
317 rmdir "$tmpdir/lib/firmware"
319 cat <<EOF >> debian/control
321 Package: $fwpackagename
323 Description: Linux kernel firmware, version $version
324 This package contains firmware from the Linux kernel, version $version.
327 create_package "$fwpackagename" "$fwdir"
330 cat <<EOF >> debian/control
332 Package: $libc_headers_packagename
334 Provides: linux-kernel-headers
336 Description: Linux support headers for userspace development
337 This package provides userspaces headers from the Linux kernel. These headers
338 are used by the installed headers for GNU glibc and other system libraries.
341 if [ "$ARCH" != "um" ]; then
342 create_package "$kernel_headers_packagename" "$kernel_headers_dir"
343 create_package "$libc_headers_packagename" "$libc_headers_dir"
346 create_package "$packagename" "$tmpdir"
348 if [ -n "$BUILD_DEBUG" ] ; then
349 # Build debug package
350 # Different tools want the image in different locations
352 mkdir -p $dbg_dir/usr/lib/debug/lib/modules/$version/
353 cp vmlinux $dbg_dir/usr/lib/debug/lib/modules/$version/
355 mkdir -p $dbg_dir/usr/lib/debug/boot/
356 ln -s ../lib/modules/$version/vmlinux $dbg_dir/usr/lib/debug/boot/vmlinux-$version
358 ln -s lib/modules/$version/vmlinux $dbg_dir/usr/lib/debug/vmlinux-$version
360 cat <<EOF >> debian/control
362 Package: $dbg_packagename
364 Provides: linux-debug, linux-debug-$version
366 Description: Linux kernel debugging symbols for $version
367 This package will come in handy if you need to debug the kernel. It provides
368 all the necessary debug symbols for the kernel and its modules.
371 create_package "$dbg_packagename" "$dbg_dir"