1#!/bin/sh 2# 3# Copyright 2003 Wichert Akkerman <[email protected]> 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 loongarch64) 81 debarch=loong64 ;; 82 esac 83 if [ -z "$debarch" ]; then 84 debarch=$(dpkg-architecture -qDEB_HOST_ARCH) 85 echo "" >&2 86 echo "** ** ** WARNING ** ** **" >&2 87 echo "" >&2 88 echo "Your architecture doesn't have its equivalent" >&2 89 echo "Debian userspace architecture defined!" >&2 90 echo "Falling back to the current host architecture ($debarch)." >&2 91 echo "Please add support for $UTS_MACHINE to ${0} ..." >&2 92 echo "" >&2 93 fi 94} 95 96# Create debian/source/ if it is a source package build 97gen_source () 98{ 99 mkdir -p debian/source 100 101 echo "3.0 (quilt)" > debian/source/format 102 103 { 104 echo "diff-ignore" 105 echo "extend-diff-ignore = .*" 106 } > debian/source/local-options 107 108 # Add .config as a patch 109 mkdir -p debian/patches 110 { 111 echo "Subject: Add .config" 112 echo "Author: ${maintainer}" 113 echo 114 echo "--- /dev/null" 115 echo "+++ linux/.config" 116 diff -u /dev/null "${KCONFIG_CONFIG}" | tail -n +3 117 } > debian/patches/config.patch 118 echo config.patch > debian/patches/series 119 120 "${srctree}/scripts/package/gen-diff-patch" debian/patches/diff.patch 121 if [ -s debian/patches/diff.patch ]; then 122 sed -i " 123 1iSubject: Add local diff 124 1iAuthor: ${maintainer} 125 1i 126 " debian/patches/diff.patch 127 128 echo diff.patch >> debian/patches/series 129 else 130 rm -f debian/patches/diff.patch 131 fi 132} 133 134rm -rf debian 135mkdir debian 136 137user=${KBUILD_BUILD_USER:-$(id -nu)} 138name=${DEBFULLNAME:-${user}} 139if [ "${DEBEMAIL:+set}" ]; then 140 email=${DEBEMAIL} 141else 142 buildhost=${KBUILD_BUILD_HOST:-$(hostname -f 2>/dev/null || hostname)} 143 email="${user}@${buildhost}" 144fi 145maintainer="${name} <${email}>" 146 147while [ $# -gt 0 ]; do 148 case "$1" in 149 --need-source) 150 gen_source 151 shift 152 ;; 153 *) 154 break 155 ;; 156 esac 157done 158 159# Some variables and settings used throughout the script 160version=$KERNELRELEASE 161if [ "${KDEB_PKGVERSION:+set}" ]; then 162 packageversion=$KDEB_PKGVERSION 163else 164 upstream_version=$("${srctree}/scripts/setlocalversion" --no-local "${srctree}" | sed 's/-\(rc[1-9]\)/~\1/') 165 debian_revision=$("${srctree}/scripts/build-version") 166 packageversion=${upstream_version}-${debian_revision} 167fi 168sourcename=${KDEB_SOURCENAME:-linux-upstream} 169 170if [ "$ARCH" = "um" ] ; then 171 packagename=user-mode-linux 172else 173 packagename=linux-image 174fi 175 176debarch= 177set_debarch 178 179# Try to determine distribution 180if [ "${KDEB_CHANGELOG_DIST:+set}" ]; then 181 distribution=$KDEB_CHANGELOG_DIST 182# In some cases lsb_release returns the codename as n/a, which breaks dpkg-parsechangelog 183elif distribution=$(lsb_release -cs 2>/dev/null) && [ -n "$distribution" ] && [ "$distribution" != "n/a" ]; then 184 : # nothing to do in this case 185else 186 distribution="unstable" 187 echo >&2 "Using default distribution of 'unstable' in the changelog" 188 echo >&2 "Install lsb-release or set \$KDEB_CHANGELOG_DIST explicitly" 189fi 190 191echo $debarch > debian/arch 192 193host_gnu=$(dpkg-architecture -a "${debarch}" -q DEB_HOST_GNU_TYPE | sed 's/_/-/g') 194 195# Generate a simple changelog template 196cat <<EOF > debian/changelog 197$sourcename ($packageversion) $distribution; urgency=low 198 199 * Custom built Linux kernel. 200 201 -- $maintainer $(date -R) 202EOF 203 204# Generate a control file 205cat <<EOF > debian/control 206Source: $sourcename 207Section: kernel 208Priority: optional 209Maintainer: $maintainer 210Rules-Requires-Root: no 211Build-Depends: debhelper-compat (= 12) 212Build-Depends-Arch: bc, bison, flex, 213 gcc-${host_gnu} <!pkg.${sourcename}.nokernelheaders>, 214 kmod, libelf-dev:native, 215 libssl-dev:native, libssl-dev <!pkg.${sourcename}.nokernelheaders>, 216 python3:native, rsync 217Homepage: https://www.kernel.org/ 218 219Package: $packagename-$version 220Architecture: $debarch 221Description: Linux kernel, version $version 222 This package contains the Linux kernel, modules and corresponding other 223 files, version: $version. 224EOF 225 226if [ "${SRCARCH}" != um ]; then 227cat <<EOF >> debian/control 228 229Package: linux-libc-dev 230Section: devel 231Provides: linux-kernel-headers 232Architecture: $debarch 233Description: Linux support headers for userspace development 234 This package provides userspaces headers from the Linux kernel. These headers 235 are used by the installed headers for GNU glibc and other system libraries. 236Multi-Arch: same 237EOF 238 239if is_enabled CONFIG_MODULES; then 240cat <<EOF >> debian/control 241 242Package: linux-headers-$version 243Architecture: $debarch 244Build-Profiles: <!pkg.${sourcename}.nokernelheaders> 245Description: Linux kernel headers for $version on $debarch 246 This package provides kernel header files for $version on $debarch 247 . 248 This is useful for people who need to build external modules 249EOF 250fi 251fi 252 253if is_enabled CONFIG_DEBUG_INFO; then 254cat <<EOF >> debian/control 255 256Package: linux-image-$version-dbg 257Section: debug 258Architecture: $debarch 259Build-Profiles: <!pkg.${sourcename}.nokerneldbg> 260Description: Linux kernel debugging symbols for $version 261 This package will come in handy if you need to debug the kernel. It provides 262 all the necessary debug symbols for the kernel and its modules. 263EOF 264fi 265 266cat <<EOF > debian/rules.vars 267ARCH := ${ARCH} 268KERNELRELEASE := ${KERNELRELEASE} 269EOF 270 271cp "${srctree}/scripts/package/debian/copyright" debian/ 272cp "${srctree}/scripts/package/debian/rules" debian/ 273 274exit 0 275