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|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 # Create debian/source/ if it is a source package build
  88 gen_source ()
  89 {
  90         mkdir -p debian/source
  91
  92         echo "3.0 (quilt)" > debian/source/format
  93
  94         {
  95                 echo "diff-ignore"
  96                 echo "extend-diff-ignore = .*"
  97         } > debian/source/local-options
  98
  99         # Add .config as a patch
 100         mkdir -p debian/patches
 101         {
 102                 echo "Subject: Add .config"
 103                 echo "Author: ${maintainer}"
 104                 echo
 105                 echo "--- /dev/null"
 106                 echo "+++ linux/.config"
 107                 diff -u /dev/null "${KCONFIG_CONFIG}" | tail -n +3
 108         } > debian/patches/config.patch
 109         echo config.patch > debian/patches/series
 110
 111         "${srctree}/scripts/package/gen-diff-patch" debian/patches/diff.patch
 112         if [ -s debian/patches/diff.patch ]; then
 113                 sed -i "
 114                         1iSubject: Add local diff
 115                         1iAuthor: ${maintainer}
 116                         1i
 117                 " debian/patches/diff.patch
 118
 119                 echo diff.patch >> debian/patches/series
 120         else
 121                 rm -f debian/patches/diff.patch
 122         fi
 123 }
 124
 125 rm -rf debian
 126 mkdir debian
 127
 128 email=${DEBEMAIL-$EMAIL}
 129
 130 # use email string directly if it contains <email>
 131 if echo "${email}" | grep -q '<.*>'; then
 132         maintainer=${email}
 133 else
 134         # or construct the maintainer string
 135         user=${KBUILD_BUILD_USER-$(id -nu)}
 136         name=${DEBFULLNAME-${user}}
 137         if [ -z "${email}" ]; then
 138                 buildhost=${KBUILD_BUILD_HOST-$(hostname -f 2>/dev/null || hostname)}
 139                 email="${user}@${buildhost}"
 140         fi
 141         maintainer="${name} <${email}>"
 142 fi
 143
 144 if [ "$1" = --need-source ]; then
 145         gen_source
 146 fi
 147
 148 # Some variables and settings used throughout the script
 149 version=$KERNELRELEASE
 150 if [ -n "$KDEB_PKGVERSION" ]; then
 151         packageversion=$KDEB_PKGVERSION
 152 else
 153         packageversion=$(${srctree}/scripts/setlocalversion --no-local ${srctree})-$($srctree/init/build-version)
 154 fi
 155 sourcename=${KDEB_SOURCENAME:-linux-upstream}
 156
 157 if [ "$ARCH" = "um" ] ; then
 158         packagename=user-mode-linux
 159 else
 160         packagename=linux-image
 161 fi
 162
 163 debarch=
 164 set_debarch
 165
 166 # Try to determine distribution
 167 if [ -n "$KDEB_CHANGELOG_DIST" ]; then
 168         distribution=$KDEB_CHANGELOG_DIST
 169 # In some cases lsb_release returns the codename as n/a, which breaks dpkg-parsechangelog
 170 elif distribution=$(lsb_release -cs 2>/dev/null) && [ -n "$distribution" ] && [ "$distribution" != "n/a" ]; then
 171         : # nothing to do in this case
 172 else
 173         distribution="unstable"
 174         echo >&2 "Using default distribution of 'unstable' in the changelog"
 175         echo >&2 "Install lsb-release or set \$KDEB_CHANGELOG_DIST explicitly"
 176 fi
 177
 178 echo $debarch > debian/arch
 179
 180 # Generate a simple changelog template
 181 cat <<EOF > debian/changelog
 182 $sourcename ($packageversion) $distribution; urgency=low
 183
 184   * Custom built Linux kernel.
 185
 186  -- $maintainer  $(date -R)
 187 EOF
 188
 189 # Generate a control file
 190 cat <<EOF > debian/control
 191 Source: $sourcename
 192 Section: kernel
 193 Priority: optional
 194 Maintainer: $maintainer
 195 Rules-Requires-Root: no
 196 Build-Depends: debhelper-compat (= 12)
 197 Build-Depends-Arch: bc, bison, cpio, flex, kmod, libelf-dev:native, libssl-dev:native, rsync
 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: $version.
 205 EOF
 206
 207 if [ "${SRCARCH}" != um ]; then
 208 cat <<EOF >> debian/control
 209
 210 Package: linux-libc-dev
 211 Section: devel
 212 Provides: linux-kernel-headers
 213 Architecture: $debarch
 214 Description: Linux support headers for userspace development
 215  This package provides userspaces headers from the Linux kernel.  These headers
 216  are used by the installed headers for GNU glibc and other system libraries.
 217 Multi-Arch: same
 218 EOF
 219
 220 if is_enabled CONFIG_MODULES; then
 221 cat <<EOF >> debian/control
 222
 223 Package: linux-headers-$version
 224 Architecture: $debarch
 225 Description: Linux kernel headers for $version on $debarch
 226  This package provides kernel header files for $version on $debarch
 227  .
 228  This is useful for people who need to build external modules
 229 EOF
 230 fi
 231 fi
 232
 233 if is_enabled CONFIG_DEBUG_INFO; then
 234 cat <<EOF >> debian/control
 235
 236 Package: linux-image-$version-dbg
 237 Section: debug
 238 Architecture: $debarch
 239 Description: Linux kernel debugging symbols for $version
 240  This package will come in handy if you need to debug the kernel. It provides
 241  all the necessary debug symbols for the kernel and its modules.
 242 EOF
 243 fi
 244
 245 cat <<EOF > debian/rules.vars
 246 ARCH := ${ARCH}
 247 KERNELRELEASE := ${KERNELRELEASE}
 248 EOF
 249
 250 cp "${srctree}/scripts/package/debian/copyright" debian/
 251 cp "${srctree}/scripts/package/debian/rules" debian/
 252
 253 exit 0