scripts/package/mkdebian

   1 #!/bin/sh
   2 #
   3 # Copyright 2003 Wichert Akkerman <[email protected]>
   4 #
   5 # Simple script to generate a debian/ directory for a Linux kernel.
   6
   7 set -eu
   8
   9 is_enabled() {
  10         grep -q "^$1=y" include/config/auto.conf
  11 }
  12
  13 if_enabled_echo() {
  14         if is_enabled "$1"; then
  15                 echo -n "$2"
  16         elif [ $# -ge 3 ]; then
  17                 echo -n "$3"
  18         fi
  19 }
  20
  21 set_debarch() {
  22         if [ "${KBUILD_DEBARCH:+set}" ]; then
  23                 debarch="$KBUILD_DEBARCH"
  24                 return
  25         fi
  26
  27         # Attempt to find the correct Debian architecture
  28         case "$UTS_MACHINE" in
  29         i386|alpha|m68k|riscv*)
  30                 debarch="$UTS_MACHINE" ;;
  31         x86_64)
  32                 debarch=amd64 ;;
  33         sparc*)
  34                 debarch=sparc$(if_enabled_echo CONFIG_64BIT 64) ;;
  35         s390*)
  36                 debarch=s390x ;;
  37         ppc*)
  38                 if is_enabled CONFIG_64BIT; then
  39                         debarch=ppc64$(if_enabled_echo CONFIG_CPU_LITTLE_ENDIAN el)
  40                 else
  41                         debarch=powerpc$(if_enabled_echo CONFIG_SPE spe)
  42                 fi
  43                 ;;
  44         parisc*)
  45                 debarch=hppa ;;
  46         mips*)
  47                 if is_enabled CONFIG_CPU_LITTLE_ENDIAN; then
  48                         debarch=mips$(if_enabled_echo CONFIG_64BIT 64)$(if_enabled_echo CONFIG_CPU_MIPSR6 r6)el
  49                 elif is_enabled CONFIG_CPU_MIPSR6; then
  50                         debarch=mips$(if_enabled_echo CONFIG_64BIT 64)r6
  51                 else
  52                         debarch=mips
  53                 fi
  54                 ;;
  55         aarch64|arm64)
  56                 debarch=arm64 ;;
  57         arm*)
  58                 if is_enabled CONFIG_AEABI; then
  59                         debarch=arm$(if_enabled_echo CONFIG_VFP hf el)
  60                 else
  61                         debarch=arm
  62                 fi
  63                 ;;
  64         openrisc)
  65                 debarch=or1k ;;
  66         sh)
  67                 if is_enabled CONFIG_CPU_SH3; then
  68                         debarch=sh3$(if_enabled_echo CONFIG_CPU_BIG_ENDIAN eb)
  69                 elif is_enabled CONFIG_CPU_SH4; then
  70                         debarch=sh4$(if_enabled_echo CONFIG_CPU_BIG_ENDIAN eb)
  71                 fi
  72                 ;;
  73         um)
  74                 if is_enabled CONFIG_64BIT; then
  75                         debarch=amd64
  76                 else
  77                         debarch=i386
  78                 fi
  79                 ;;
  80         esac
  81         if [ -z "$debarch" ]; then
  82                 debarch=$(dpkg-architecture -qDEB_HOST_ARCH)
  83                 echo "" >&2
  84                 echo "** ** **  WARNING  ** ** **" >&2
  85                 echo "" >&2
  86                 echo "Your architecture doesn't have its equivalent" >&2
  87                 echo "Debian userspace architecture defined!" >&2
  88                 echo "Falling back to the current host architecture ($debarch)." >&2
  89                 echo "Please add support for $UTS_MACHINE to ${0} ..." >&2
  90                 echo "" >&2
  91         fi
  92 }
  93
  94 # Create debian/source/ if it is a source package build
  95 gen_source ()
  96 {
  97         mkdir -p debian/source
  98
  99         echo "3.0 (quilt)" > debian/source/format
 100
 101         {
 102                 echo "diff-ignore"
 103                 echo "extend-diff-ignore = .*"
 104         } > debian/source/local-options
 105
 106         # Add .config as a patch
 107         mkdir -p debian/patches
 108         {
 109                 echo "Subject: Add .config"
 110                 echo "Author: ${maintainer}"
 111                 echo
 112                 echo "--- /dev/null"
 113                 echo "+++ linux/.config"
 114                 diff -u /dev/null "${KCONFIG_CONFIG}" | tail -n +3
 115         } > debian/patches/config.patch
 116         echo config.patch > debian/patches/series
 117
 118         "${srctree}/scripts/package/gen-diff-patch" debian/patches/diff.patch
 119         if [ -s debian/patches/diff.patch ]; then
 120                 sed -i "
 121                         1iSubject: Add local diff
 122                         1iAuthor: ${maintainer}
 123                         1i
 124                 " debian/patches/diff.patch
 125
 126                 echo diff.patch >> debian/patches/series
 127         else
 128                 rm -f debian/patches/diff.patch
 129         fi
 130 }
 131
 132 rm -rf debian
 133 mkdir debian
 134
 135 user=${KBUILD_BUILD_USER:-$(id -nu)}
 136 name=${DEBFULLNAME:-${user}}
 137 if [ "${DEBEMAIL:+set}" ]; then
 138         email=${DEBEMAIL}
 139 else
 140         buildhost=${KBUILD_BUILD_HOST:-$(hostname -f 2>/dev/null || hostname)}
 141         email="${user}@${buildhost}"
 142 fi
 143 maintainer="${name} <${email}>"
 144
 145 while [ $# -gt 0 ]; do
 146         case "$1" in
 147         --need-source)
 148                 gen_source
 149                 shift
 150                 ;;
 151         *)
 152                 break
 153                 ;;
 154         esac
 155 done
 156
 157 # Some variables and settings used throughout the script
 158 version=$KERNELRELEASE
 159 if [ "${KDEB_PKGVERSION:+set}" ]; then
 160         packageversion=$KDEB_PKGVERSION
 161 else
 162         packageversion=$(${srctree}/scripts/setlocalversion --no-local ${srctree})-$($srctree/scripts/build-version)
 163 fi
 164 sourcename=${KDEB_SOURCENAME:-linux-upstream}
 165
 166 if [ "$ARCH" = "um" ] ; then
 167         packagename=user-mode-linux
 168 else
 169         packagename=linux-image
 170 fi
 171
 172 debarch=
 173 set_debarch
 174
 175 # Try to determine distribution
 176 if [ "${KDEB_CHANGELOG_DIST:+set}" ]; then
 177         distribution=$KDEB_CHANGELOG_DIST
 178 # In some cases lsb_release returns the codename as n/a, which breaks dpkg-parsechangelog
 179 elif distribution=$(lsb_release -cs 2>/dev/null) && [ -n "$distribution" ] && [ "$distribution" != "n/a" ]; then
 180         : # nothing to do in this case
 181 else
 182         distribution="unstable"
 183         echo >&2 "Using default distribution of 'unstable' in the changelog"
 184         echo >&2 "Install lsb-release or set \$KDEB_CHANGELOG_DIST explicitly"
 185 fi
 186
 187 echo $debarch > debian/arch
 188
 189 host_gnu=$(dpkg-architecture -a "${debarch}" -q DEB_HOST_GNU_TYPE | sed 's/_/-/g')
 190
 191 # Generate a simple changelog template
 192 cat <<EOF > debian/changelog
 193 $sourcename ($packageversion) $distribution; urgency=low
 194
 195   * Custom built Linux kernel.
 196
 197  -- $maintainer  $(date -R)
 198 EOF
 199
 200 # Generate a control file
 201 cat <<EOF > debian/control
 202 Source: $sourcename
 203 Section: kernel
 204 Priority: optional
 205 Maintainer: $maintainer
 206 Rules-Requires-Root: no
 207 Build-Depends: debhelper-compat (= 12)
 208 Build-Depends-Arch: bc, bison, cpio, flex,
 209  gcc-${host_gnu} <!pkg.${sourcename}.nokernelheaders>,
 210  kmod, libelf-dev:native,
 211  libssl-dev:native, libssl-dev <!pkg.${sourcename}.nokernelheaders>,
 212  python3:native, rsync
 213 Homepage: https://www.kernel.org/
 214
 215 Package: $packagename-$version
 216 Architecture: $debarch
 217 Description: Linux kernel, version $version
 218  This package contains the Linux kernel, modules and corresponding other
 219  files, version: $version.
 220 EOF
 221
 222 if [ "${SRCARCH}" != um ]; then
 223 cat <<EOF >> debian/control
 224
 225 Package: linux-libc-dev
 226 Section: devel
 227 Provides: linux-kernel-headers
 228 Architecture: $debarch
 229 Description: Linux support headers for userspace development
 230  This package provides userspaces headers from the Linux kernel.  These headers
 231  are used by the installed headers for GNU glibc and other system libraries.
 232 Multi-Arch: same
 233 EOF
 234
 235 if is_enabled CONFIG_MODULES; then
 236 cat <<EOF >> debian/control
 237
 238 Package: linux-headers-$version
 239 Architecture: $debarch
 240 Build-Profiles: <!pkg.${sourcename}.nokernelheaders>
 241 Description: Linux kernel headers for $version on $debarch
 242  This package provides kernel header files for $version on $debarch
 243  .
 244  This is useful for people who need to build external modules
 245 EOF
 246 fi
 247 fi
 248
 249 if is_enabled CONFIG_DEBUG_INFO; then
 250 cat <<EOF >> debian/control
 251
 252 Package: linux-image-$version-dbg
 253 Section: debug
 254 Architecture: $debarch
 255 Build-Profiles: <!pkg.${sourcename}.nokerneldbg>
 256 Description: Linux kernel debugging symbols for $version
 257  This package will come in handy if you need to debug the kernel. It provides
 258  all the necessary debug symbols for the kernel and its modules.
 259 EOF
 260 fi
 261
 262 cat <<EOF > debian/rules.vars
 263 ARCH := ${ARCH}
 264 KERNELRELEASE := ${KERNELRELEASE}
 265 EOF
 266
 267 cp "${srctree}/scripts/package/debian/copyright" debian/
 268 cp "${srctree}/scripts/package/debian/rules" debian/
 269
 270 exit 0