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 7set -eu 8 9is_enabled() { 10 grep -q "^$1=y" include/config/auto.conf 11} 12 13if_enabled_echo() { 14 if is_enabled "$1"; then 15 echo -n "$2" 16 elif [ $# -ge 3 ]; then 17 echo -n "$3" 18 fi 19} 20 21set_debarch() { 22 if [ "${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 loongarch64) 81 debarch=loong64 ;; 82 esac 83 if [ -z "$debarch" ]; then 84 debarch=$(dpkg-architecture -qDEB_HOST_ARCH) 85 echo "" >&2 86 echo "** ** ** WARNING ** ** **" >&2 87 echo "" >&2 88 echo "Your architecture doesn't have its equivalent" >&2 89 echo "Debian userspace architecture defined!" >&2 90 echo "Falling back to the current host architecture ($debarch)." >&2 91 echo "Please add support for $UTS_MACHINE to ${0} ..." >&2 92 echo "" >&2 93 fi 94} 95 96# Create debian/source/ if it is a source package build 97gen_source () 98{ 99 mkdir -p debian/source 100 101 echo "3.0 (quilt)" > debian/source/format 102 103 { 104 echo "diff-ignore" 105 echo "extend-diff-ignore = .*" 106 } > debian/source/local-options 107 108 # Add .config as a patch 109 mkdir -p debian/patches 110 { 111 echo "Subject: Add .config" 112 echo "Author: ${maintainer}" 113 echo 114 echo "--- /dev/null" 115 echo "+++ linux/.config" 116 diff -u /dev/null "${KCONFIG_CONFIG}" | tail -n +3 117 } > debian/patches/config.patch 118 echo config.patch > debian/patches/series 119 120 "${srctree}/scripts/package/gen-diff-patch" debian/patches/diff.patch 121 if [ -s debian/patches/diff.patch ]; then 122 sed -i " 123 1iSubject: Add local diff 124 1iAuthor: ${maintainer} 125 1i 126 " debian/patches/diff.patch 127 128 echo diff.patch >> debian/patches/series 129 else 130 rm -f debian/patches/diff.patch 131 fi 132} 133 134rm -rf debian 135mkdir debian 136 137user=${KBUILD_BUILD_USER:-$(id -nu)} 138name=${DEBFULLNAME:-${user}} 139if [ "${DEBEMAIL:+set}" ]; then 140 email=${DEBEMAIL} 141else 142 buildhost=${KBUILD_BUILD_HOST:-$(hostname -f 2>/dev/null || hostname)} 143 email="${user}@${buildhost}" 144fi 145maintainer="${name} <${email}>" 146 147while [ $# -gt 0 ]; do 148 case "$1" in 149 --need-source) 150 gen_source 151 shift 152 ;; 153 *) 154 break 155 ;; 156 esac 157done 158 159# Some variables and settings used throughout the script 160version=$KERNELRELEASE 161if [ "${KDEB_PKGVERSION:+set}" ]; then 162 packageversion=$KDEB_PKGVERSION 163else 164 packageversion=$(${srctree}/scripts/setlocalversion --no-local ${srctree})-$($srctree/scripts/build-version) 165fi 166sourcename=${KDEB_SOURCENAME:-linux-upstream} 167 168if [ "$ARCH" = "um" ] ; then 169 packagename=user-mode-linux 170else 171 packagename=linux-image 172fi 173 174debarch= 175set_debarch 176 177# Try to determine distribution 178if [ "${KDEB_CHANGELOG_DIST:+set}" ]; then 179 distribution=$KDEB_CHANGELOG_DIST 180# In some cases lsb_release returns the codename as n/a, which breaks dpkg-parsechangelog 181elif distribution=$(lsb_release -cs 2>/dev/null) && [ -n "$distribution" ] && [ "$distribution" != "n/a" ]; then 182 : # nothing to do in this case 183else 184 distribution="unstable" 185 echo >&2 "Using default distribution of 'unstable' in the changelog" 186 echo >&2 "Install lsb-release or set \$KDEB_CHANGELOG_DIST explicitly" 187fi 188 189echo $debarch > debian/arch 190 191host_gnu=$(dpkg-architecture -a "${debarch}" -q DEB_HOST_GNU_TYPE | sed 's/_/-/g') 192 193# Generate a simple changelog template 194cat <<EOF > debian/changelog 195$sourcename ($packageversion) $distribution; urgency=low 196 197 * Custom built Linux kernel. 198 199 -- $maintainer $(date -R) 200EOF 201 202# Generate a control file 203cat <<EOF > debian/control 204Source: $sourcename 205Section: kernel 206Priority: optional 207Maintainer: $maintainer 208Rules-Requires-Root: no 209Build-Depends: debhelper-compat (= 12) 210Build-Depends-Arch: bc, bison, flex, 211 gcc-${host_gnu} <!pkg.${sourcename}.nokernelheaders>, 212 kmod, libelf-dev:native, 213 libssl-dev:native, libssl-dev <!pkg.${sourcename}.nokernelheaders>, 214 python3:native, rsync 215Homepage: https://www.kernel.org/ 216 217Package: $packagename-$version 218Architecture: $debarch 219Description: Linux kernel, version $version 220 This package contains the Linux kernel, modules and corresponding other 221 files, version: $version. 222EOF 223 224if [ "${SRCARCH}" != um ]; then 225cat <<EOF >> debian/control 226 227Package: linux-libc-dev 228Section: devel 229Provides: linux-kernel-headers 230Architecture: $debarch 231Description: Linux support headers for userspace development 232 This package provides userspaces headers from the Linux kernel. These headers 233 are used by the installed headers for GNU glibc and other system libraries. 234Multi-Arch: same 235EOF 236 237if is_enabled CONFIG_MODULES; then 238cat <<EOF >> debian/control 239 240Package: linux-headers-$version 241Architecture: $debarch 242Build-Profiles: <!pkg.${sourcename}.nokernelheaders> 243Description: Linux kernel headers for $version on $debarch 244 This package provides kernel header files for $version on $debarch 245 . 246 This is useful for people who need to build external modules 247EOF 248fi 249fi 250 251if is_enabled CONFIG_DEBUG_INFO; then 252cat <<EOF >> debian/control 253 254Package: linux-image-$version-dbg 255Section: debug 256Architecture: $debarch 257Build-Profiles: <!pkg.${sourcename}.nokerneldbg> 258Description: Linux kernel debugging symbols for $version 259 This package will come in handy if you need to debug the kernel. It provides 260 all the necessary debug symbols for the kernel and its modules. 261EOF 262fi 263 264cat <<EOF > debian/rules.vars 265ARCH := ${ARCH} 266KERNELRELEASE := ${KERNELRELEASE} 267EOF 268 269cp "${srctree}/scripts/package/debian/copyright" debian/ 270cp "${srctree}/scripts/package/debian/rules" debian/ 271 272exit 0 273