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 ${0} ..." >&2 83 echo "" >&2 84 fi 85} 86 87# Some variables and settings used throughout the script 88version=$KERNELRELEASE 89if [ -n "$KDEB_PKGVERSION" ]; then 90 packageversion=$KDEB_PKGVERSION 91 revision=${packageversion##*-} 92else 93 revision=$($srctree/init/build-version) 94 packageversion=$version-$revision 95fi 96sourcename=$KDEB_SOURCENAME 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 "1.0" > debian/source/format 137 138echo $debarch > debian/arch 139extra_build_depends=", $(if_enabled_echo CONFIG_UNWINDER_ORC libelf-dev:native)" 140extra_build_depends="$extra_build_depends, $(if_enabled_echo CONFIG_SYSTEM_TRUSTED_KEYRING libssl-dev:native)" 141 142# Generate a simple changelog template 143cat <<EOF > debian/changelog 144$sourcename ($packageversion) $distribution; urgency=low 145 146 * Custom built Linux kernel. 147 148 -- $maintainer $(date -R) 149EOF 150 151# Generate copyright file 152cat <<EOF > debian/copyright 153This is a packacked upstream version of the Linux kernel. 154 155The sources may be found at most Linux archive sites, including: 156https://www.kernel.org/pub/linux/kernel 157 158Copyright: 1991 - 2018 Linus Torvalds and others. 159 160The git repository for mainline kernel development is at: 161git://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 167On Debian GNU/Linux systems, the complete text of the GNU General Public 168License version 2 can be found in \`/usr/share/common-licenses/GPL-2'. 169EOF 170 171# Generate a control file 172cat <<EOF > debian/control 173Source: $sourcename 174Section: kernel 175Priority: optional 176Maintainer: $maintainer 177Rules-Requires-Root: no 178Build-Depends: bc, rsync, kmod, cpio, bison, flex $extra_build_depends 179Homepage: https://www.kernel.org/ 180 181Package: $packagename-$version 182Architecture: $debarch 183Description: Linux kernel, version $version 184 This package contains the Linux kernel, modules and corresponding other 185 files, version: $version. 186 187Package: linux-libc-dev 188Section: devel 189Provides: linux-kernel-headers 190Architecture: $debarch 191Description: Linux support headers for userspace development 192 This package provides userspaces headers from the Linux kernel. These headers 193 are used by the installed headers for GNU glibc and other system libraries. 194Multi-Arch: same 195EOF 196 197if is_enabled CONFIG_MODULES; then 198cat <<EOF >> debian/control 199 200Package: linux-headers-$version 201Architecture: $debarch 202Description: Linux kernel headers for $version on $debarch 203 This package provides kernel header files for $version on $debarch 204 . 205 This is useful for people who need to build external modules 206EOF 207fi 208 209if is_enabled CONFIG_DEBUG_INFO; then 210cat <<EOF >> debian/control 211 212Package: linux-image-$version-dbg 213Section: debug 214Architecture: $debarch 215Description: Linux kernel debugging symbols for $version 216 This package will come in handy if you need to debug the kernel. It provides 217 all the necessary debug symbols for the kernel and its modules. 218EOF 219fi 220 221cat <<EOF > debian/rules 222#!$(command -v $MAKE) -f 223 224srctree ?= . 225 226build-indep: 227build-arch: 228 \$(MAKE) KERNELRELEASE=${version} ARCH=${ARCH} \ 229 KBUILD_BUILD_VERSION=${revision} -f \$(srctree)/Makefile 230 231build: build-arch 232 233binary-indep: 234binary-arch: build-arch 235 \$(MAKE) KERNELRELEASE=${version} ARCH=${ARCH} \ 236 KBUILD_BUILD_VERSION=${revision} -f \$(srctree)/Makefile intdeb-pkg 237 238clean: 239 rm -rf debian/*tmp debian/files 240 \$(MAKE) clean 241 242binary: binary-arch 243EOF 244chmod +x debian/rules 245 246exit 0 247