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 179extra_build_depends=", $(if_enabled_echo CONFIG_UNWINDER_ORC libelf-dev:native)" 180extra_build_depends="$extra_build_depends, $(if_enabled_echo CONFIG_SYSTEM_TRUSTED_KEYRING libssl-dev:native)" 181 182# Generate a simple changelog template 183cat <<EOF > debian/changelog 184$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: bc, debhelper, rsync, kmod, cpio, bison, flex $extra_build_depends 199Homepage: https://www.kernel.org/ 200 201Package: $packagename-$version 202Architecture: $debarch 203Description: Linux kernel, version $version 204 This package contains the Linux kernel, modules and corresponding other 205 files, version: $version. 206EOF 207 208if [ "${SRCARCH}" != um ]; then 209cat <<EOF >> debian/control 210 211Package: linux-libc-dev 212Section: devel 213Provides: linux-kernel-headers 214Architecture: $debarch 215Description: Linux support headers for userspace development 216 This package provides userspaces headers from the Linux kernel. These headers 217 are used by the installed headers for GNU glibc and other system libraries. 218Multi-Arch: same 219EOF 220 221if is_enabled CONFIG_MODULES; then 222cat <<EOF >> debian/control 223 224Package: linux-headers-$version 225Architecture: $debarch 226Description: Linux kernel headers for $version on $debarch 227 This package provides kernel header files for $version on $debarch 228 . 229 This is useful for people who need to build external modules 230EOF 231fi 232fi 233 234if is_enabled CONFIG_DEBUG_INFO; then 235cat <<EOF >> debian/control 236 237Package: linux-image-$version-dbg 238Section: debug 239Architecture: $debarch 240Description: Linux kernel debugging symbols for $version 241 This package will come in handy if you need to debug the kernel. It provides 242 all the necessary debug symbols for the kernel and its modules. 243EOF 244fi 245 246cat <<EOF > debian/rules.vars 247ARCH := ${ARCH} 248KERNELRELEASE := ${KERNELRELEASE} 249EOF 250 251cp "${srctree}/scripts/package/debian/copyright" debian/ 252cp "${srctree}/scripts/package/debian/rules" debian/ 253 254exit 0 255