scripts/package/builddeb

   1 #!/bin/sh
   2 #
   3 # builddeb 1.3
   4 # Copyright 2003 Wichert Akkerman <wichert@wiggy.net>
   5 #
   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
  11 # removal.
  12
  13 set -eu
  14
  15 is_enabled() {
  16         grep -q "^$1=y" include/config/auto.conf
  17 }
  18
  19 if_enabled_echo() {
  20         if is_enabled "$1"; then
  21                 echo -n "$2"
  22         elif [ $# -ge 3 ]; then
  23                 echo -n "$3"
  24         fi
  25 }
  26
  27 install_linux_image () {
  28         pname=$1
  29         pdir=debian/$1
  30
  31         # Only some architectures with OF support have this target
  32         if is_enabled CONFIG_OF_EARLY_FLATTREE && [ -d "${srctree}/arch/${SRCARCH}/boot/dts" ]; then
  33                 ${MAKE} -f ${srctree}/Makefile INSTALL_DTBS_PATH="${pdir}/usr/lib/linux-image-${KERNELRELEASE}" dtbs_install
  34         fi
  35
  36         ${MAKE} -f ${srctree}/Makefile INSTALL_MOD_PATH="${pdir}" INSTALL_MOD_STRIP=1 modules_install
  37         rm -f "${pdir}/lib/modules/${KERNELRELEASE}/build"
  38
  39         # Install the kernel
  40         if [ "${ARCH}" = um ] ; then
  41                 mkdir -p "${pdir}/usr/lib/uml/modules"
  42                 mv "${pdir}/lib/modules/${KERNELRELEASE}" "${pdir}/usr/lib/uml/modules/${KERNELRELEASE}"
  43                 mkdir -p "${pdir}/usr/bin" "${pdir}/usr/share/doc/${pname}"
  44                 cp System.map "${pdir}/usr/lib/uml/modules/${KERNELRELEASE}/System.map"
  45                 cp ${KCONFIG_CONFIG} "${pdir}/usr/share/doc/${pname}/config"
  46                 gzip "${pdir}/usr/share/doc/${pname}/config"
  47         else
  48                 mkdir -p "${pdir}/boot"
  49                 cp System.map "${pdir}/boot/System.map-${KERNELRELEASE}"
  50                 cp ${KCONFIG_CONFIG} "${pdir}/boot/config-${KERNELRELEASE}"
  51         fi
  52
  53         # Not all arches have the same installed path in debian
  54         # XXX: have each arch Makefile export a variable of the canonical image install
  55         # path instead
  56         case "${SRCARCH}" in
  57         um)
  58                 installed_image_path="usr/bin/linux-${KERNELRELEASE}";;
  59         parisc|mips|powerpc)
  60                 installed_image_path="boot/vmlinux-${KERNELRELEASE}";;
  61         *)
  62                 installed_image_path="boot/vmlinuz-${KERNELRELEASE}";;
  63         esac
  64         cp "$(${MAKE} -s -f ${srctree}/Makefile image_name)" "${pdir}/${installed_image_path}"
  65
  66         if [ "${ARCH}" != um ]; then
  67                 install_maint_scripts "${pdir}"
  68         fi
  69 }
  70
  71 install_maint_scripts () {
  72         # Install the maintainer scripts
  73         # Note: hook scripts under /etc/kernel are also executed by official Debian
  74         # kernel packages, as well as kernel packages built using make-kpkg.
  75         # make-kpkg sets $INITRD to indicate whether an initramfs is wanted, and
  76         # so do we; recent versions of dracut and initramfs-tools will obey this.
  77         debhookdir=${KDEB_HOOKDIR:-/etc/kernel}
  78         for script in postinst postrm preinst prerm; do
  79                 mkdir -p "${pdir}${debhookdir}/${script}.d"
  80
  81                 mkdir -p "${pdir}/DEBIAN"
  82                 cat <<-EOF > "${pdir}/DEBIAN/${script}"
  83                 #!/bin/sh
  84
  85                 set -e
  86
  87                 # Pass maintainer script parameters to hook scripts
  88                 export DEB_MAINT_PARAMS="\$*"
  89
  90                 # Tell initramfs builder whether it's wanted
  91                 export INITRD=$(if_enabled_echo CONFIG_BLK_DEV_INITRD Yes No)
  92
  93                 test -d ${debhookdir}/${script}.d && run-parts --arg="${KERNELRELEASE}" --arg="/${installed_image_path}" ${debhookdir}/${script}.d
  94                 exit 0
  95                 EOF
  96                 chmod 755 "${pdir}/DEBIAN/${script}"
  97         done
  98 }
  99
 100 install_linux_image_dbg () {
 101         pdir=debian/$1
 102
 103         # Parse modules.order directly because 'make modules_install' may sign,
 104         # compress modules, and then run unneeded depmod.
 105         if is_enabled CONFIG_MODULES; then
 106                 while read -r mod; do
 107                         mod="${mod%.o}.ko"
 108                         dbg="${pdir}/usr/lib/debug/lib/modules/${KERNELRELEASE}/kernel/${mod}"
 109                         buildid=$("${READELF}" -n "${mod}" | sed -n 's@^.*Build ID: \(..\)\(.*\)@\1/\2@p')
 110                         link="${pdir}/usr/lib/debug/.build-id/${buildid}.debug"
 111
 112                         mkdir -p "${dbg%/*}" "${link%/*}"
 113                         "${OBJCOPY}" --only-keep-debug "${mod}" "${dbg}"
 114                         ln -sf --relative "${dbg}" "${link}"
 115                 done < modules.order
 116         fi
 117
 118         # Build debug package
 119         # Different tools want the image in different locations
 120         # perf
 121         mkdir -p ${pdir}/usr/lib/debug/lib/modules/${KERNELRELEASE}/
 122         cp vmlinux ${pdir}/usr/lib/debug/lib/modules/${KERNELRELEASE}/
 123         # systemtap
 124         mkdir -p ${pdir}/usr/lib/debug/boot/
 125         ln -s ../lib/modules/${KERNELRELEASE}/vmlinux ${pdir}/usr/lib/debug/boot/vmlinux-${KERNELRELEASE}
 126         # kdump-tools
 127         ln -s lib/modules/${KERNELRELEASE}/vmlinux ${pdir}/usr/lib/debug/vmlinux-${KERNELRELEASE}
 128 }
 129
 130 install_kernel_headers () {
 131         pdir=debian/$1
 132         version=${1#linux-headers-}
 133
 134         CC="${DEB_HOST_GNU_TYPE}-gcc" "${srctree}/scripts/package/install-extmod-build" "${pdir}/usr/src/linux-headers-${version}"
 135
 136         mkdir -p $pdir/lib/modules/$version/
 137         ln -s /usr/src/linux-headers-$version $pdir/lib/modules/$version/build
 138 }
 139
 140 install_libc_headers () {
 141         pdir=debian/$1
 142
 143         $MAKE -f $srctree/Makefile headers_install INSTALL_HDR_PATH=$pdir/usr
 144
 145         # move asm headers to /usr/include/<libc-machine>/asm to match the structure
 146         # used by Debian-based distros (to support multi-arch)
 147         mkdir "$pdir/usr/include/${DEB_HOST_MULTIARCH}"
 148         mv "$pdir/usr/include/asm" "$pdir/usr/include/${DEB_HOST_MULTIARCH}"
 149 }
 150
 151 package=$1
 152
 153 case "${package}" in
 154 *-dbg)
 155         install_linux_image_dbg "${package}";;
 156 linux-image-*|user-mode-linux-*)
 157         install_linux_image "${package}";;
 158 linux-libc-dev)
 159         install_libc_headers "${package}";;
 160 linux-headers-*)
 161         install_kernel_headers "${package}";;
 162 esac