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