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 Rules-Requires-Root: no
 178 Build-Depends: bc, rsync, kmod, cpio, bison, flex | flex:native $extra_build_depends
 179 Homepage: https://www.kernel.org/
 180
 181 Package: $packagename
 182 Architecture: $debarch
 183 Description: Linux kernel, version $version
 184  This package contains the Linux kernel, modules and corresponding other
 185  files, version: $version.
 186
 187 Package: $kernel_headers_packagename
 188 Architecture: $debarch
 189 Description: Linux kernel headers for $version on $debarch
 190  This package provides kernel header files for $version on $debarch
 191  .
 192  This is useful for people who need to build external modules
 193
 194 Package: linux-libc-dev
 195 Section: devel
 196 Provides: linux-kernel-headers
 197 Architecture: $debarch
 198 Description: Linux support headers for userspace development
 199  This package provides userspaces headers from the Linux kernel.  These headers
 200  are used by the installed headers for GNU glibc and other system libraries.
 201 Multi-Arch: same
 202 EOF
 203
 204 if is_enabled CONFIG_DEBUG_INFO; then
 205 cat <<EOF >> debian/control
 206
 207 Package: $dbg_packagename
 208 Section: debug
 209 Architecture: $debarch
 210 Description: Linux kernel debugging symbols for $version
 211  This package will come in handy if you need to debug the kernel. It provides
 212  all the necessary debug symbols for the kernel and its modules.
 213 EOF
 214 fi
 215
 216 cat <<EOF > debian/rules
 217 #!$(command -v $MAKE) -f
 218
 219 srctree ?= .
 220
 221 build-indep:
 222 build-arch:
 223         \$(MAKE) KERNELRELEASE=${version} ARCH=${ARCH} \
 224         KBUILD_BUILD_VERSION=${revision} -f \$(srctree)/Makefile
 225
 226 build: build-arch
 227
 228 binary-indep:
 229 binary-arch: build-arch
 230         \$(MAKE) KERNELRELEASE=${version} ARCH=${ARCH} \
 231         KBUILD_BUILD_VERSION=${revision} -f \$(srctree)/Makefile intdeb-pkg
 232
 233 clean:
 234         rm -rf debian/*tmp debian/files
 235         \$(MAKE) clean
 236
 237 binary: binary-arch
 238 EOF
 239 chmod +x debian/rules
 240
 241 exit 0