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=$version-$($srctree/init/build-version) 95fi 96sourcename=${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 155echo $debarch > debian/arch 156extra_build_depends=", $(if_enabled_echo CONFIG_UNWINDER_ORC libelf-dev:native)" 157extra_build_depends="$extra_build_depends, $(if_enabled_echo CONFIG_SYSTEM_TRUSTED_KEYRING libssl-dev:native)" 158 159# Generate a simple changelog template 160cat <<EOF > debian/changelog 161$sourcename ($packageversion) $distribution; urgency=low 162 163 * Custom built Linux kernel. 164 165 -- $maintainer $(date -R) 166EOF 167 168# Generate copyright file 169cat <<EOF > debian/copyright 170This is a packacked upstream version of the Linux kernel. 171 172The sources may be found at most Linux archive sites, including: 173https://www.kernel.org/pub/linux/kernel 174 175Copyright: 1991 - 2018 Linus Torvalds and others. 176 177The git repository for mainline kernel development is at: 178git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git 179 180 This program is free software; you can redistribute it and/or modify 181 it under the terms of the GNU General Public License as published by 182 the Free Software Foundation; version 2 dated June, 1991. 183 184On Debian GNU/Linux systems, the complete text of the GNU General Public 185License version 2 can be found in \`/usr/share/common-licenses/GPL-2'. 186EOF 187 188# Generate a control file 189cat <<EOF > debian/control 190Source: $sourcename 191Section: kernel 192Priority: optional 193Maintainer: $maintainer 194Rules-Requires-Root: no 195Build-Depends: bc, rsync, kmod, cpio, bison, flex $extra_build_depends 196Homepage: https://www.kernel.org/ 197 198Package: $packagename-$version 199Architecture: $debarch 200Description: Linux kernel, version $version 201 This package contains the Linux kernel, modules and corresponding other 202 files, version: $version. 203 204Package: linux-libc-dev 205Section: devel 206Provides: linux-kernel-headers 207Architecture: $debarch 208Description: Linux support headers for userspace development 209 This package provides userspaces headers from the Linux kernel. These headers 210 are used by the installed headers for GNU glibc and other system libraries. 211Multi-Arch: same 212EOF 213 214if is_enabled CONFIG_MODULES; then 215cat <<EOF >> debian/control 216 217Package: linux-headers-$version 218Architecture: $debarch 219Description: Linux kernel headers for $version on $debarch 220 This package provides kernel header files for $version on $debarch 221 . 222 This is useful for people who need to build external modules 223EOF 224fi 225 226if is_enabled CONFIG_DEBUG_INFO; then 227cat <<EOF >> debian/control 228 229Package: linux-image-$version-dbg 230Section: debug 231Architecture: $debarch 232Description: Linux kernel debugging symbols for $version 233 This package will come in handy if you need to debug the kernel. It provides 234 all the necessary debug symbols for the kernel and its modules. 235EOF 236fi 237 238cat <<EOF > debian/rules 239#!$(command -v $MAKE) -f 240 241srctree ?= . 242 243build-indep: 244build-arch: 245 \$(MAKE) -f \$(srctree)/Makefile ARCH=${ARCH} \ 246 \$(shell \$(srctree)/scripts/package/deb-build-option) \ 247 olddefconfig all 248 249build: build-arch 250 251binary-indep: 252binary-arch: build-arch 253 \$(MAKE) -f \$(srctree)/Makefile ARCH=${ARCH} intdeb-pkg 254clean: 255 rm -rf debian/files debian/linux-* 256 \$(MAKE) -f \$(srctree)/Makefile ARCH=${ARCH} clean 257 258binary: binary-arch 259EOF 260chmod +x debian/rules 261 262exit 0 263