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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
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|ia64|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 ${0} ..." >&2
83 echo "" >&2
84 fi
85}
86
87# Some variables and settings used throughout the script
88version=$KERNELRELEASE
89if [ -n "$KDEB_PKGVERSION" ]; then
90 packageversion=$KDEB_PKGVERSION
91 revision=${packageversion##*-}
92else
93 revision=$($srctree/init/build-version)
94 packageversion=$version-$revision
95fi
96sourcename=$KDEB_SOURCENAME
97
98if [ "$ARCH" = "um" ] ; then
99 packagename=user-mode-linux
100else
101 packagename=linux-image
102fi
103
104debarch=
105set_debarch
106
107email=${DEBEMAIL-$EMAIL}
108
109# use email string directly if it contains <email>
110if echo $email | grep -q '<.*>'; then
111 maintainer=$email
112else
113 # or construct the maintainer string
114 user=${KBUILD_BUILD_USER-$(id -nu)}
115 name=${DEBFULLNAME-$user}
116 if [ -z "$email" ]; then
117 buildhost=${KBUILD_BUILD_HOST-$(hostname -f 2>/dev/null || hostname)}
118 email="$user@$buildhost"
119 fi
120 maintainer="$name <$email>"
121fi
122
123# Try to determine distribution
124if [ -n "$KDEB_CHANGELOG_DIST" ]; then
125 distribution=$KDEB_CHANGELOG_DIST
126# In some cases lsb_release returns the codename as n/a, which breaks dpkg-parsechangelog
127elif distribution=$(lsb_release -cs 2>/dev/null) && [ -n "$distribution" ] && [ "$distribution" != "n/a" ]; then
128 : # nothing to do in this case
129else
130 distribution="unstable"
131 echo >&2 "Using default distribution of 'unstable' in the changelog"
132 echo >&2 "Install lsb-release or set \$KDEB_CHANGELOG_DIST explicitly"
133fi
134
135mkdir -p debian/source/
136echo "1.0" > debian/source/format
137
138echo $debarch > debian/arch
139extra_build_depends=", $(if_enabled_echo CONFIG_UNWINDER_ORC libelf-dev:native)"
140extra_build_depends="$extra_build_depends, $(if_enabled_echo CONFIG_SYSTEM_TRUSTED_KEYRING libssl-dev:native)"
141
142# Generate a simple changelog template
143cat <<EOF > debian/changelog
144$sourcename ($packageversion) $distribution; urgency=low
145
146 * Custom built Linux kernel.
147
148 -- $maintainer $(date -R)
149EOF
150
151# Generate copyright file
152cat <<EOF > debian/copyright
153This is a packacked upstream version of the Linux kernel.
154
155The sources may be found at most Linux archive sites, including:
156https://www.kernel.org/pub/linux/kernel
157
158Copyright: 1991 - 2018 Linus Torvalds and others.
159
160The git repository for mainline kernel development is at:
161git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
162
163 This program is free software; you can redistribute it and/or modify
164 it under the terms of the GNU General Public License as published by
165 the Free Software Foundation; version 2 dated June, 1991.
166
167On Debian GNU/Linux systems, the complete text of the GNU General Public
168License version 2 can be found in \`/usr/share/common-licenses/GPL-2'.
169EOF
170
171# Generate a control file
172cat <<EOF > debian/control
173Source: $sourcename
174Section: kernel
175Priority: optional
176Maintainer: $maintainer
177Rules-Requires-Root: no
178Build-Depends: bc, rsync, kmod, cpio, bison, flex $extra_build_depends
179Homepage: https://www.kernel.org/
180
181Package: $packagename-$version
182Architecture: $debarch
183Description: Linux kernel, version $version
184 This package contains the Linux kernel, modules and corresponding other
185 files, version: $version.
186
187Package: linux-libc-dev
188Section: devel
189Provides: linux-kernel-headers
190Architecture: $debarch
191Description: Linux support headers for userspace development
192 This package provides userspaces headers from the Linux kernel. These headers
193 are used by the installed headers for GNU glibc and other system libraries.
194Multi-Arch: same
195EOF
196
197if is_enabled CONFIG_MODULES; then
198cat <<EOF >> debian/control
199
200Package: linux-headers-$version
201Architecture: $debarch
202Description: Linux kernel headers for $version on $debarch
203 This package provides kernel header files for $version on $debarch
204 .
205 This is useful for people who need to build external modules
206EOF
207fi
208
209if is_enabled CONFIG_DEBUG_INFO; then
210cat <<EOF >> debian/control
211
212Package: linux-image-$version-dbg
213Section: debug
214Architecture: $debarch
215Description: Linux kernel debugging symbols for $version
216 This package will come in handy if you need to debug the kernel. It provides
217 all the necessary debug symbols for the kernel and its modules.
218EOF
219fi
220
221cat <<EOF > debian/rules
222#!$(command -v $MAKE) -f
223
224srctree ?= .
225
226build-indep:
227build-arch:
228 \$(MAKE) KERNELRELEASE=${version} ARCH=${ARCH} \
229 KBUILD_BUILD_VERSION=${revision} -f \$(srctree)/Makefile
230
231build: build-arch
232
233binary-indep:
234binary-arch: build-arch
235 \$(MAKE) KERNELRELEASE=${version} ARCH=${ARCH} \
236 KBUILD_BUILD_VERSION=${revision} -f \$(srctree)/Makefile intdeb-pkg
237
238clean:
239 rm -rf debian/*tmp debian/files
240 \$(MAKE) clean
241
242binary: binary-arch
243EOF
244chmod +x debian/rules
245
246exit 0