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 ${0} ..." >&2
  83                 echo "" >&2
  84         fi
  85 }
  86
  87 # Some variables and settings used throughout the script
  88 version=$KERNELRELEASE
  89 if [ -n "$KDEB_PKGVERSION" ]; then
  90         packageversion=$KDEB_PKGVERSION
  91         revision=${packageversion##*-}
  92 else
  93         revision=$(cat .version 2>/dev/null||echo 1)
  94         packageversion=$version-$revision
  95 fi
  96 sourcename=$KDEB_SOURCENAME
  97 packagename=linux-image-$version
  98 kernel_headers_packagename=linux-headers-$version
  99 dbg_packagename=$packagename-dbg
 100 debarch=
 101 set_debarch
 102
 103 if [ "$ARCH" = "um" ] ; then
 104         packagename=user-mode-linux-$version
 105 fi
 106
 107 email=${DEBEMAIL-$EMAIL}
 108
 109 # use email string directly if it contains <email>
 110 if echo $email | grep -q '<.*>'; then
 111         maintainer=$email
 112 else
 113         # or construct the maintainer string
 114         user=${KBUILD_BUILD_USER-$(id -nu)}
 115         name=${DEBFULLNAME-$user}
 116         if [ -z "$email" ]; then
 117                 buildhost=${KBUILD_BUILD_HOST-$(hostname -f 2>/dev/null || hostname)}
 118                 email="$user@$buildhost"
 119         fi
 120         maintainer="$name <$email>"
 121 fi
 122
 123 # Try to determine distribution
 124 if [ -n "$KDEB_CHANGELOG_DIST" ]; then
 125         distribution=$KDEB_CHANGELOG_DIST
 126 # In some cases lsb_release returns the codename as n/a, which breaks dpkg-parsechangelog
 127 elif distribution=$(lsb_release -cs 2>/dev/null) && [ -n "$distribution" ] && [ "$distribution" != "n/a" ]; then
 128         : # nothing to do in this case
 129 else
 130         distribution="unstable"
 131         echo >&2 "Using default distribution of 'unstable' in the changelog"
 132         echo >&2 "Install lsb-release or set \$KDEB_CHANGELOG_DIST explicitly"
 133 fi
 134
 135 mkdir -p debian/source/
 136 echo "1.0" > debian/source/format
 137
 138 echo $debarch > debian/arch
 139 extra_build_depends=", $(if_enabled_echo CONFIG_UNWINDER_ORC libelf-dev:native)"
 140 extra_build_depends="$extra_build_depends, $(if_enabled_echo CONFIG_SYSTEM_TRUSTED_KEYRING libssl-dev:native)"
 141
 142 # Generate a simple changelog template
 143 cat <<EOF > debian/changelog
 144 $sourcename ($packageversion) $distribution; urgency=low
 145
 146   * Custom built Linux kernel.
 147
 148  -- $maintainer  $(date -R)
 149 EOF
 150
 151 # Generate copyright file
 152 cat <<EOF > debian/copyright
 153 This is a packacked upstream version of the Linux kernel.
 154
 155 The sources may be found at most Linux archive sites, including:
 156 https://www.kernel.org/pub/linux/kernel
 157
 158 Copyright: 1991 - 2018 Linus Torvalds and others.
 159
 160 The git repository for mainline kernel development is at:
 161 git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
 162
 163     This program is free software; you can redistribute it and/or modify
 164     it under the terms of the GNU General Public License as published by
 165     the Free Software Foundation; version 2 dated June, 1991.
 166
 167 On Debian GNU/Linux systems, the complete text of the GNU General Public
 168 License version 2 can be found in \`/usr/share/common-licenses/GPL-2'.
 169 EOF
 170
 171 # Generate a control file
 172 cat <<EOF > debian/control
 173 Source: $sourcename
 174 Section: kernel
 175 Priority: optional
 176 Maintainer: $maintainer
 177 Build-Depends: bc, rsync, kmod, cpio, bison, flex | flex:native $extra_build_depends
 178 Homepage: https://www.kernel.org/
 179
 180 Package: $packagename
 181 Architecture: $debarch
 182 Description: Linux kernel, version $version
 183  This package contains the Linux kernel, modules and corresponding other
 184  files, version: $version.
 185
 186 Package: $kernel_headers_packagename
 187 Architecture: $debarch
 188 Description: Linux kernel headers for $version on $debarch
 189  This package provides kernel header files for $version on $debarch
 190  .
 191  This is useful for people who need to build external modules
 192
 193 Package: linux-libc-dev
 194 Section: devel
 195 Provides: linux-kernel-headers
 196 Architecture: $debarch
 197 Description: Linux support headers for userspace development
 198  This package provides userspaces headers from the Linux kernel.  These headers
 199  are used by the installed headers for GNU glibc and other system libraries.
 200 Multi-Arch: same
 201 EOF
 202
 203 if is_enabled CONFIG_DEBUG_INFO; then
 204 cat <<EOF >> debian/control
 205
 206 Package: $dbg_packagename
 207 Section: debug
 208 Architecture: $debarch
 209 Description: Linux kernel debugging symbols for $version
 210  This package will come in handy if you need to debug the kernel. It provides
 211  all the necessary debug symbols for the kernel and its modules.
 212 EOF
 213 fi
 214
 215 cat <<EOF > debian/rules
 216 #!$(command -v $MAKE) -f
 217
 218 srctree ?= .
 219
 220 build:
 221         \$(MAKE) KERNELRELEASE=${version} ARCH=${ARCH} \
 222         KBUILD_BUILD_VERSION=${revision} -f \$(srctree)/Makefile
 223
 224 binary-arch:
 225         \$(MAKE) KERNELRELEASE=${version} ARCH=${ARCH} \
 226         KBUILD_BUILD_VERSION=${revision} -f \$(srctree)/Makefile intdeb-pkg
 227
 228 clean:
 229         rm -rf debian/*tmp debian/files
 230         \$(MAKE) clean
 231
 232 binary: binary-arch
 233 EOF
 234 chmod +x debian/rules
 235
 236 exit 0