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 -e 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 "$3" 18 fi 19} 20 21set_debarch() { 22 if [ -n "$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 ${0} ..." >&2 83 echo "" >&2 84 fi 85} 86 87rm -rf debian 88 89# Some variables and settings used throughout the script 90version=$KERNELRELEASE 91if [ -n "$KDEB_PKGVERSION" ]; then 92 packageversion=$KDEB_PKGVERSION 93else 94 packageversion=$(${srctree}/scripts/setlocalversion --no-local ${srctree})-$($srctree/init/build-version) 95fi 96sourcename=${KDEB_SOURCENAME:-linux-upstream} 97 98if [ "$ARCH" = "um" ] ; then 99 packagename=user-mode-linux 100else 101 packagename=linux-image 102fi 103 104debarch= 105set_debarch 106 107email=${DEBEMAIL-$EMAIL} 108 109# use email string directly if it contains <email> 110if echo $email | grep -q '<.*>'; then 111 maintainer=$email 112else 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 <$email>" 121fi 122 123# Try to determine distribution 124if [ -n "$KDEB_CHANGELOG_DIST" ]; then 125 distribution=$KDEB_CHANGELOG_DIST 126# In some cases lsb_release returns the codename as n/a, which breaks dpkg-parsechangelog 127elif distribution=$(lsb_release -cs 2>/dev/null) && [ -n "$distribution" ] && [ "$distribution" != "n/a" ]; then 128 : # nothing to do in this case 129else 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" 133fi 134 135mkdir -p debian/source/ 136echo "3.0 (quilt)" > debian/source/format 137 138{ 139 echo "diff-ignore" 140 echo "extend-diff-ignore = .*" 141} > debian/source/local-options 142 143# Add .config as a patch 144mkdir -p debian/patches 145{ 146 echo "Subject: Add .config" 147 echo "Author: ${maintainer}" 148 echo 149 echo "--- /dev/null" 150 echo "+++ linux/.config" 151 diff -u /dev/null "${KCONFIG_CONFIG}" | tail -n +3 152} > debian/patches/config 153echo config > debian/patches/series 154 155$(dirname $0)/gen-diff-patch debian/patches/diff.patch debian/patches/untracked.patch 156if [ -f debian/patches/diff.patch ]; then 157 echo diff.patch >> debian/patches/series 158fi 159if [ -f debian/patches/untracked.patch ]; then 160 echo untracked.patch >> debian/patches/series 161fi 162 163echo $debarch > debian/arch 164extra_build_depends=", $(if_enabled_echo CONFIG_UNWINDER_ORC libelf-dev:native)" 165extra_build_depends="$extra_build_depends, $(if_enabled_echo CONFIG_SYSTEM_TRUSTED_KEYRING libssl-dev:native)" 166 167# Generate a simple changelog template 168cat <<EOF > debian/changelog 169$sourcename ($packageversion) $distribution; urgency=low 170 171 * Custom built Linux kernel. 172 173 -- $maintainer $(date -R) 174EOF 175 176# Generate copyright file 177cat <<EOF > debian/copyright 178This is a packacked upstream version of the Linux kernel. 179 180The sources may be found at most Linux archive sites, including: 181https://www.kernel.org/pub/linux/kernel 182 183Copyright: 1991 - 2018 Linus Torvalds and others. 184 185The git repository for mainline kernel development is at: 186git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git 187 188 This program is free software; you can redistribute it and/or modify 189 it under the terms of the GNU General Public License as published by 190 the Free Software Foundation; version 2 dated June, 1991. 191 192On Debian GNU/Linux systems, the complete text of the GNU General Public 193License version 2 can be found in \`/usr/share/common-licenses/GPL-2'. 194EOF 195 196# Generate a control file 197cat <<EOF > debian/control 198Source: $sourcename 199Section: kernel 200Priority: optional 201Maintainer: $maintainer 202Rules-Requires-Root: no 203Build-Depends: bc, debhelper, rsync, kmod, cpio, bison, flex $extra_build_depends 204Homepage: https://www.kernel.org/ 205 206Package: $packagename-$version 207Architecture: $debarch 208Description: Linux kernel, version $version 209 This package contains the Linux kernel, modules and corresponding other 210 files, version: $version. 211EOF 212 213if [ "${SRCARCH}" != um ]; then 214cat <<EOF >> debian/control 215 216Package: linux-libc-dev 217Section: devel 218Provides: linux-kernel-headers 219Architecture: $debarch 220Description: Linux support headers for userspace development 221 This package provides userspaces headers from the Linux kernel. These headers 222 are used by the installed headers for GNU glibc and other system libraries. 223Multi-Arch: same 224EOF 225 226if is_enabled CONFIG_MODULES; then 227cat <<EOF >> debian/control 228 229Package: linux-headers-$version 230Architecture: $debarch 231Description: Linux kernel headers for $version on $debarch 232 This package provides kernel header files for $version on $debarch 233 . 234 This is useful for people who need to build external modules 235EOF 236fi 237fi 238 239if is_enabled CONFIG_DEBUG_INFO; then 240cat <<EOF >> debian/control 241 242Package: linux-image-$version-dbg 243Section: debug 244Architecture: $debarch 245Description: Linux kernel debugging symbols for $version 246 This package will come in handy if you need to debug the kernel. It provides 247 all the necessary debug symbols for the kernel and its modules. 248EOF 249fi 250 251cat <<EOF > debian/rules 252#!$(command -v $MAKE) -f 253 254srctree ?= . 255KERNELRELEASE = ${KERNELRELEASE} 256 257build-indep: 258build-arch: 259 \$(MAKE) -f \$(srctree)/Makefile ARCH=${ARCH} \ 260 KERNELRELEASE=\$(KERNELRELEASE) \ 261 \$(shell \$(srctree)/scripts/package/deb-build-option) \ 262 olddefconfig all 263 264build: build-arch 265 266binary-indep: 267binary-arch: build-arch 268 \$(MAKE) -f \$(srctree)/Makefile ARCH=${ARCH} \ 269 KERNELRELEASE=\$(KERNELRELEASE) intdeb-pkg 270 271clean: 272 rm -rf debian/files debian/linux-* 273 \$(MAKE) -f \$(srctree)/Makefile ARCH=${ARCH} clean 274 275binary: binary-arch 276EOF 277chmod +x debian/rules 278 279exit 0 280