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 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 88gen_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: ${maintainer} 116 1i 117 " debian/patches/diff.patch 118 119 echo diff.patch >> debian/patches/series 120 else 121 rm -f debian/patches/diff.patch 122 fi 123} 124 125rm -rf debian 126mkdir debian 127 128user=${KBUILD_BUILD_USER:-$(id -nu)} 129name=${DEBFULLNAME:-${user}} 130if [ "${DEBEMAIL:+set}" ]; then 131 email=${DEBEMAIL} 132else 133 buildhost=${KBUILD_BUILD_HOST:-$(hostname -f 2>/dev/null || hostname)} 134 email="${user}@${buildhost}" 135fi 136maintainer="${name} <${email}>" 137 138while [ $# -gt 0 ]; do 139 case "$1" in 140 --need-source) 141 gen_source 142 shift 143 ;; 144 *) 145 break 146 ;; 147 esac 148done 149 150# Some variables and settings used throughout the script 151version=$KERNELRELEASE 152if [ "${KDEB_PKGVERSION:+set}" ]; then 153 packageversion=$KDEB_PKGVERSION 154else 155 packageversion=$(${srctree}/scripts/setlocalversion --no-local ${srctree})-$($srctree/scripts/build-version) 156fi 157sourcename=${KDEB_SOURCENAME:-linux-upstream} 158 159if [ "$ARCH" = "um" ] ; then 160 packagename=user-mode-linux 161else 162 packagename=linux-image 163fi 164 165debarch= 166set_debarch 167 168# Try to determine distribution 169if [ "${KDEB_CHANGELOG_DIST:+set}" ]; then 170 distribution=$KDEB_CHANGELOG_DIST 171# In some cases lsb_release returns the codename as n/a, which breaks dpkg-parsechangelog 172elif distribution=$(lsb_release -cs 2>/dev/null) && [ -n "$distribution" ] && [ "$distribution" != "n/a" ]; then 173 : # nothing to do in this case 174else 175 distribution="unstable" 176 echo >&2 "Using default distribution of 'unstable' in the changelog" 177 echo >&2 "Install lsb-release or set \$KDEB_CHANGELOG_DIST explicitly" 178fi 179 180echo $debarch > debian/arch 181 182# Generate a simple changelog template 183cat <<EOF > debian/changelog 184$sourcename ($packageversion) $distribution; urgency=low 185 186 * Custom built Linux kernel. 187 188 -- $maintainer $(date -R) 189EOF 190 191# Generate a control file 192cat <<EOF > debian/control 193Source: $sourcename 194Section: kernel 195Priority: optional 196Maintainer: $maintainer 197Rules-Requires-Root: no 198Build-Depends: debhelper-compat (= 12) 199Build-Depends-Arch: bc, bison, cpio, flex, kmod, libelf-dev:native, libssl-dev:native, rsync 200Homepage: https://www.kernel.org/ 201 202Package: $packagename-$version 203Architecture: $debarch 204Description: Linux kernel, version $version 205 This package contains the Linux kernel, modules and corresponding other 206 files, version: $version. 207EOF 208 209if [ "${SRCARCH}" != um ]; then 210cat <<EOF >> debian/control 211 212Package: linux-libc-dev 213Section: devel 214Provides: linux-kernel-headers 215Architecture: $debarch 216Description: Linux support headers for userspace development 217 This package provides userspaces headers from the Linux kernel. These headers 218 are used by the installed headers for GNU glibc and other system libraries. 219Multi-Arch: same 220EOF 221 222if is_enabled CONFIG_MODULES; then 223cat <<EOF >> debian/control 224 225Package: linux-headers-$version 226Architecture: $debarch 227Description: Linux kernel headers for $version on $debarch 228 This package provides kernel header files for $version on $debarch 229 . 230 This is useful for people who need to build external modules 231EOF 232fi 233fi 234 235if is_enabled CONFIG_DEBUG_INFO; then 236cat <<EOF >> debian/control 237 238Package: linux-image-$version-dbg 239Section: debug 240Architecture: $debarch 241Description: Linux kernel debugging symbols for $version 242 This package will come in handy if you need to debug the kernel. It provides 243 all the necessary debug symbols for the kernel and its modules. 244EOF 245fi 246 247cat <<EOF > debian/rules.vars 248ARCH := ${ARCH} 249KERNELRELEASE := ${KERNELRELEASE} 250EOF 251 252cp "${srctree}/scripts/package/debian/copyright" debian/ 253cp "${srctree}/scripts/package/debian/rules" debian/ 254 255exit 0 256