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 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 "$1" in 149 --need-source) 150 gen_source 151 shift 152 ;; 153 *) 154 break 155 ;; 156 esac 157done 158 159# Some variables and settings used throughout the script 160if [ "${KDEB_PKGVERSION:+set}" ]; then 161 packageversion=$KDEB_PKGVERSION 162else 163 upstream_version=$("${srctree}/scripts/setlocalversion" --no-local "${srctree}" | sed 's/-\(rc[1-9]\)/~\1/') 164 debian_revision=$("${srctree}/scripts/build-version") 165 packageversion=${upstream_version}-${debian_revision} 166fi 167sourcename=${KDEB_SOURCENAME:-linux-upstream} 168 169if [ "$ARCH" = "um" ] ; then 170 packagename=user-mode-linux 171else 172 packagename=linux-image 173fi 174 175debarch= 176set_debarch 177 178# Try to determine distribution 179if [ "${KDEB_CHANGELOG_DIST:+set}" ]; then 180 distribution=$KDEB_CHANGELOG_DIST 181# In some cases lsb_release returns the codename as n/a, which breaks dpkg-parsechangelog 182elif distribution=$(lsb_release -cs 2>/dev/null) && [ -n "$distribution" ] && [ "$distribution" != "n/a" ]; then 183 : # nothing to do in this case 184else 185 distribution="unstable" 186 echo >&2 "Using default distribution of 'unstable' in the changelog" 187 echo >&2 "Install lsb-release or set \$KDEB_CHANGELOG_DIST explicitly" 188fi 189 190echo $debarch > debian/arch 191 192host_gnu=$(dpkg-architecture -a "${debarch}" -q DEB_HOST_GNU_TYPE | sed 's/_/-/g') 193 194# Generate a simple changelog template 195cat <<EOF > debian/changelog 196$sourcename ($packageversion) $distribution; urgency=low 197 198 * Custom built Linux kernel. 199 200 -- $maintainer $(date -R) 201EOF 202 203# Generate a control file 204cat <<EOF > debian/control 205Source: $sourcename 206Section: kernel 207Priority: optional 208Maintainer: $maintainer 209Rules-Requires-Root: no 210Build-Depends: debhelper-compat (= 12) 211Build-Depends-Arch: bc, bison, flex, 212 gcc-${host_gnu} <!pkg.${sourcename}.nokernelheaders>, 213 kmod, libelf-dev:native, 214 libssl-dev:native, libssl-dev <!pkg.${sourcename}.nokernelheaders>, 215 python3:native, rsync 216Homepage: https://www.kernel.org/ 217 218Package: $packagename-${KERNELRELEASE} 219Architecture: $debarch 220Description: Linux kernel, version ${KERNELRELEASE} 221 This package contains the Linux kernel, modules and corresponding other 222 files, version: ${KERNELRELEASE}. 223EOF 224 225if [ "${SRCARCH}" != um ]; then 226cat <<EOF >> debian/control 227 228Package: linux-libc-dev 229Section: devel 230Provides: linux-kernel-headers 231Architecture: $debarch 232Description: Linux support headers for userspace development 233 This package provides userspaces headers from the Linux kernel. These headers 234 are used by the installed headers for GNU glibc and other system libraries. 235Multi-Arch: same 236EOF 237 238if is_enabled CONFIG_MODULES; then 239cat <<EOF >> debian/control 240 241Package: linux-headers-${KERNELRELEASE} 242Architecture: $debarch 243Build-Profiles: <!pkg.${sourcename}.nokernelheaders> 244Description: Linux kernel headers for ${KERNELRELEASE} on $debarch 245 This package provides kernel header files for ${KERNELRELEASE} on $debarch 246 . 247 This is useful for people who need to build external modules 248EOF 249fi 250fi 251 252if is_enabled CONFIG_DEBUG_INFO; then 253cat <<EOF >> debian/control 254 255Package: linux-image-${KERNELRELEASE}-dbg 256Section: debug 257Architecture: $debarch 258Build-Profiles: <!pkg.${sourcename}.nokerneldbg> 259Description: Linux kernel debugging symbols for ${KERNELRELEASE} 260 This package will come in handy if you need to debug the kernel. It provides 261 all the necessary debug symbols for the kernel and its modules. 262EOF 263fi 264 265cat <<EOF > debian/rules.vars 266ARCH := ${ARCH} 267KERNELRELEASE := ${KERNELRELEASE} 268EOF 269 270cp "${srctree}/scripts/package/debian/copyright" debian/ 271cp "${srctree}/scripts/package/debian/rules" debian/ 272 273exit 0 274