scripts/package/mkdebian

   1 #!/bin/sh
   2 #
   3 # Copyright 2003 Wichert Akkerman <wichert@wiggy.net>
   4 #
   5 # Simple script to generate a debian/ directory for a Linux kernel.
   6
   7 set -e
   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 "$3"
  18         fi
  19 }
  20
  21 set_debarch() {
  22         if [ -n "$KBUILD_DEBARCH" ] ; 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|ia64|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         esac
  74         if [ -z "$debarch" ]; then
  75                 debarch=$(dpkg-architecture -qDEB_HOST_ARCH)
  76                 echo "" >&2
  77                 echo "** ** **  WARNING  ** ** **" >&2
  78                 echo "" >&2
  79                 echo "Your architecture doesn't have its equivalent" >&2
  80                 echo "Debian userspace architecture defined!" >&2
  81                 echo "Falling back to the current host architecture ($debarch)." >&2
  82                 echo "Please add support for $UTS_MACHINE to ${0} ..." >&2
  83                 echo "" >&2
  84         fi
  85 }
  86
  87 rm -rf debian
  88
  89 # Some variables and settings used throughout the script
  90 version=$KERNELRELEASE
  91 if [ -n "$KDEB_PKGVERSION" ]; then
  92         packageversion=$KDEB_PKGVERSION
  93         revision=${packageversion##*-}
  94 else
  95         revision=$($srctree/init/build-version)
  96         packageversion=$version-$revision
  97 fi
  98 sourcename=${KDEB_SOURCENAME:-linux-upstream}
  99
 100 if [ "$ARCH" = "um" ] ; then
 101         packagename=user-mode-linux
 102 else
 103         packagename=linux-image
 104 fi
 105
 106 debarch=
 107 set_debarch
 108
 109 email=${DEBEMAIL-$EMAIL}
 110
 111 # use email string directly if it contains <email>
 112 if echo $email | grep -q '<.*>'; then
 113         maintainer=$email
 114 else
 115         # or construct the maintainer string
 116         user=${KBUILD_BUILD_USER-$(id -nu)}
 117         name=${DEBFULLNAME-$user}
 118         if [ -z "$email" ]; then
 119                 buildhost=${KBUILD_BUILD_HOST-$(hostname -f 2>/dev/null || hostname)}
 120                 email="$user@$buildhost"
 121         fi
 122         maintainer="$name <$email>"
 123 fi
 124
 125 # Try to determine distribution
 126 if [ -n "$KDEB_CHANGELOG_DIST" ]; then
 127         distribution=$KDEB_CHANGELOG_DIST
 128 # In some cases lsb_release returns the codename as n/a, which breaks dpkg-parsechangelog
 129 elif distribution=$(lsb_release -cs 2>/dev/null) && [ -n "$distribution" ] && [ "$distribution" != "n/a" ]; then
 130         : # nothing to do in this case
 131 else
 132         distribution="unstable"
 133         echo >&2 "Using default distribution of 'unstable' in the changelog"
 134         echo >&2 "Install lsb-release or set \$KDEB_CHANGELOG_DIST explicitly"
 135 fi
 136
 137 mkdir -p debian/source/
 138 echo "3.0 (quilt)" > debian/source/format
 139
 140 {
 141         echo "diff-ignore"
 142         echo "extend-diff-ignore = .*"
 143 } > debian/source/local-options
 144
 145 # Add .config as a patch
 146 mkdir -p debian/patches
 147 {
 148         echo "Subject: Add .config"
 149         echo "Author: ${maintainer}"
 150         echo
 151         echo "--- /dev/null"
 152         echo "+++ linux/.config"
 153         diff -u /dev/null "${KCONFIG_CONFIG}" | tail -n +3
 154 } > debian/patches/config
 155 echo config > debian/patches/series
 156
 157 echo $debarch > debian/arch
 158 extra_build_depends=", $(if_enabled_echo CONFIG_UNWINDER_ORC libelf-dev:native)"
 159 extra_build_depends="$extra_build_depends, $(if_enabled_echo CONFIG_SYSTEM_TRUSTED_KEYRING libssl-dev:native)"
 160
 161 # Generate a simple changelog template
 162 cat <<EOF > debian/changelog
 163 $sourcename ($packageversion) $distribution; urgency=low
 164
 165   * Custom built Linux kernel.
 166
 167  -- $maintainer  $(date -R)
 168 EOF
 169
 170 # Generate copyright file
 171 cat <<EOF > debian/copyright
 172 This is a packacked upstream version of the Linux kernel.
 173
 174 The sources may be found at most Linux archive sites, including:
 175 https://www.kernel.org/pub/linux/kernel
 176
 177 Copyright: 1991 - 2018 Linus Torvalds and others.
 178
 179 The git repository for mainline kernel development is at:
 180 git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
 181
 182     This program is free software; you can redistribute it and/or modify
 183     it under the terms of the GNU General Public License as published by
 184     the Free Software Foundation; version 2 dated June, 1991.
 185
 186 On Debian GNU/Linux systems, the complete text of the GNU General Public
 187 License version 2 can be found in \`/usr/share/common-licenses/GPL-2'.
 188 EOF
 189
 190 # Generate a control file
 191 cat <<EOF > debian/control
 192 Source: $sourcename
 193 Section: kernel
 194 Priority: optional
 195 Maintainer: $maintainer
 196 Rules-Requires-Root: no
 197 Build-Depends: bc, rsync, kmod, cpio, bison, flex $extra_build_depends
 198 Homepage: https://www.kernel.org/
 199
 200 Package: $packagename-$version
 201 Architecture: $debarch
 202 Description: Linux kernel, version $version
 203  This package contains the Linux kernel, modules and corresponding other
 204  files, version: $version.
 205
 206 Package: linux-libc-dev
 207 Section: devel
 208 Provides: linux-kernel-headers
 209 Architecture: $debarch
 210 Description: Linux support headers for userspace development
 211  This package provides userspaces headers from the Linux kernel.  These headers
 212  are used by the installed headers for GNU glibc and other system libraries.
 213 Multi-Arch: same
 214 EOF
 215
 216 if is_enabled CONFIG_MODULES; then
 217 cat <<EOF >> debian/control
 218
 219 Package: linux-headers-$version
 220 Architecture: $debarch
 221 Description: Linux kernel headers for $version on $debarch
 222  This package provides kernel header files for $version on $debarch
 223  .
 224  This is useful for people who need to build external modules
 225 EOF
 226 fi
 227
 228 if is_enabled CONFIG_DEBUG_INFO; then
 229 cat <<EOF >> debian/control
 230
 231 Package: linux-image-$version-dbg
 232 Section: debug
 233 Architecture: $debarch
 234 Description: Linux kernel debugging symbols for $version
 235  This package will come in handy if you need to debug the kernel. It provides
 236  all the necessary debug symbols for the kernel and its modules.
 237 EOF
 238 fi
 239
 240 cat <<EOF > debian/rules
 241 #!$(command -v $MAKE) -f
 242
 243 srctree ?= .
 244
 245 build-indep:
 246 build-arch:
 247         \$(MAKE) KERNELRELEASE=${version} ARCH=${ARCH} \
 248         KBUILD_BUILD_VERSION=${revision} -f \$(srctree)/Makefile
 249
 250 build: build-arch
 251
 252 binary-indep:
 253 binary-arch: build-arch
 254         \$(MAKE) KERNELRELEASE=${version} ARCH=${ARCH} \
 255         KBUILD_BUILD_VERSION=${revision} -f \$(srctree)/Makefile intdeb-pkg
 256
 257 clean:
 258         rm -rf debian/files debian/linux-*
 259         \$(MAKE) clean
 260
 261 binary: binary-arch
 262 EOF
 263 chmod +x debian/rules
 264
 265 exit 0