#!/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. Scripts can be placed into the# preinst, postinst, prerm and postrm directories in /etc/kernel or# /usr/share/kernel. A different list of search directories can be given# via KDEB_HOOKDIR. Scripts in directories earlier in the list will# override scripts of the same name in later directories.  The script will# be called on package installation and removal. set -eu 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} install_linux_image () {	pname=$1	pdir=debian/$1 	# Only some architectures with OF support have this target	if is_enabled CONFIG_OF_EARLY_FLATTREE && [ -d "${srctree}/arch/${SRCARCH}/boot/dts" ]; then		${MAKE} -f ${srctree}/Makefile INSTALL_DTBS_PATH="${pdir}/usr/lib/linux-image-${KERNELRELEASE}" dtbs_install	fi 	${MAKE} -f ${srctree}/Makefile INSTALL_MOD_PATH="${pdir}" INSTALL_MOD_STRIP=1 modules_install	rm -f "${pdir}/lib/modules/${KERNELRELEASE}/build" 	# Install the kernel	if [ "${ARCH}" = um ] ; then		mkdir -p "${pdir}/usr/lib/uml/modules"		mv "${pdir}/lib/modules/${KERNELRELEASE}" "${pdir}/usr/lib/uml/modules/${KERNELRELEASE}"		mkdir -p "${pdir}/usr/bin" "${pdir}/usr/share/doc/${pname}"		cp System.map "${pdir}/usr/lib/uml/modules/${KERNELRELEASE}/System.map"		cp ${KCONFIG_CONFIG} "${pdir}/usr/share/doc/${pname}/config"		gzip "${pdir}/usr/share/doc/${pname}/config"	else		mkdir -p "${pdir}/boot"		cp System.map "${pdir}/boot/System.map-${KERNELRELEASE}"		cp ${KCONFIG_CONFIG} "${pdir}/boot/config-${KERNELRELEASE}"	fi 	# Not all arches have the same installed path in debian	# XXX: have each arch Makefile export a variable of the canonical image install	# path instead	case "${SRCARCH}" in	um)		installed_image_path="usr/bin/linux-${KERNELRELEASE}";;	parisc|mips|powerpc)		installed_image_path="boot/vmlinux-${KERNELRELEASE}";;	*)		installed_image_path="boot/vmlinuz-${KERNELRELEASE}";;	esac	cp "$(${MAKE} -s -f ${srctree}/Makefile image_name)" "${pdir}/${installed_image_path}" 	if [ "${ARCH}" != um ]; then		install_maint_scripts "${pdir}"	fi} install_maint_scripts () {	# 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 /usr/share/kernel}	for script in postinst postrm preinst prerm; do		mkdir -p "${pdir}/DEBIAN"		cat <<-EOF > "${pdir}/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) 		# run-parts will error out if one of its directory arguments does not		# exist, so filter the list of hook directories accordingly.		hookdirs=		for dir in ${debhookdir}; do			test -d "\$dir/${script}.d" || continue			hookdirs="\$hookdirs \$dir/${script}.d"		done		hookdirs="\${hookdirs# }"		test -n "\$hookdirs" && run-parts --arg="${KERNELRELEASE}" --arg="/${installed_image_path}" \$hookdirs		exit 0		EOF		chmod 755 "${pdir}/DEBIAN/${script}"	done} install_linux_image_dbg () {	pdir=debian/$1 	# Parse modules.order directly because 'make modules_install' may sign,	# compress modules, and then run unneeded depmod.	if is_enabled CONFIG_MODULES; then		while read -r mod; do			mod="${mod%.o}.ko"			dbg="${pdir}/usr/lib/debug/lib/modules/${KERNELRELEASE}/kernel/${mod}"			buildid=$("${READELF}" -n "${mod}" | sed -n 's@^.*Build ID: \(..\)\(.*\)@\1/\2@p')			link="${pdir}/usr/lib/debug/.build-id/${buildid}.debug" 			mkdir -p "${dbg%/*}" "${link%/*}"			"${OBJCOPY}" --only-keep-debug "${mod}" "${dbg}"			ln -sf --relative "${dbg}" "${link}"		done < modules.order	fi 	# Build debug package	# Different tools want the image in different locations	# perf	mkdir -p ${pdir}/usr/lib/debug/lib/modules/${KERNELRELEASE}/	cp vmlinux ${pdir}/usr/lib/debug/lib/modules/${KERNELRELEASE}/	# systemtap	mkdir -p ${pdir}/usr/lib/debug/boot/	ln -s ../lib/modules/${KERNELRELEASE}/vmlinux ${pdir}/usr/lib/debug/boot/vmlinux-${KERNELRELEASE}	# kdump-tools	ln -s lib/modules/${KERNELRELEASE}/vmlinux ${pdir}/usr/lib/debug/vmlinux-${KERNELRELEASE}} install_kernel_headers () {	pdir=debian/$1	version=${1#linux-headers-} 	# Override $CC only for cross-compiles, to not unnecessarily rebuild	# scripts/ including plugins, which may lead to a full kernel rebuild.	if [ -n "${CROSS_COMPILE}" ]; then		CC="${DEB_HOST_GNU_TYPE}-gcc" "${srctree}/scripts/package/install-extmod-build" "${pdir}/usr/src/linux-headers-${version}"	else		"${srctree}/scripts/package/install-extmod-build" "${pdir}/usr/src/linux-headers-${version}"	fi 	mkdir -p $pdir/lib/modules/$version/	ln -s /usr/src/linux-headers-$version $pdir/lib/modules/$version/build} install_libc_headers () {	pdir=debian/$1 	$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)	mkdir "$pdir/usr/include/${DEB_HOST_MULTIARCH}"	mv "$pdir/usr/include/asm" "$pdir/usr/include/${DEB_HOST_MULTIARCH}"} package=$1 case "${package}" in*-dbg)	install_linux_image_dbg "${package}";;linux-image-*|user-mode-linux-*)	install_linux_image "${package}";;linux-libc-dev)	install_libc_headers "${package}";;linux-headers-*)	install_kernel_headers "${package}";;esac