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