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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 -e
8
9set_debarch() {
10 # Attempt to find the correct Debian architecture
11 case "$UTS_MACHINE" in
12 i386|ia64|alpha)
13 debarch="$UTS_MACHINE" ;;
14 x86_64)
15 debarch=amd64 ;;
16 sparc*)
17 debarch=sparc ;;
18 s390*)
19 debarch=s390$(grep -q CONFIG_64BIT=y $KCONFIG_CONFIG && echo x || true) ;;
20 ppc*)
21 debarch=$(grep -q CPU_LITTLE_ENDIAN=y $KCONFIG_CONFIG && echo ppc64el || echo powerpc) ;;
22 parisc*)
23 debarch=hppa ;;
24 mips*)
25 debarch=mips$(grep -q CPU_LITTLE_ENDIAN=y $KCONFIG_CONFIG && echo el || true) ;;
26 aarch64|arm64)
27 debarch=arm64 ;;
28 arm*)
29 if grep -q CONFIG_AEABI=y $KCONFIG_CONFIG; then
30 if grep -q CONFIG_VFP=y $KCONFIG_CONFIG; then
31 debarch=armhf
32 else
33 debarch=armel
34 fi
35 else
36 debarch=arm
37 fi
38 ;;
39 *)
40 debarch=$(dpkg --print-architecture)
41 echo "" >&2
42 echo "** ** ** WARNING ** ** **" >&2
43 echo "" >&2
44 echo "Your architecture doesn't have its equivalent" >&2
45 echo "Debian userspace architecture defined!" >&2
46 echo "Falling back to using your current userspace instead!" >&2
47 echo "Please add support for $UTS_MACHINE to ${0} ..." >&2
48 echo "" >&2
49 esac
50 if [ -n "$KBUILD_DEBARCH" ] ; then
51 debarch="$KBUILD_DEBARCH"
52 fi
53}
54
55# Some variables and settings used throughout the script
56version=$KERNELRELEASE
57if [ -n "$KDEB_PKGVERSION" ]; then
58 packageversion=$KDEB_PKGVERSION
59else
60 revision=$(cat .version 2>/dev/null||echo 1)
61 packageversion=$version-$revision
62fi
63sourcename=$KDEB_SOURCENAME
64packagename=linux-image-$version
65kernel_headers_packagename=linux-headers-$version
66dbg_packagename=$packagename-dbg
67debarch=
68set_debarch
69
70if [ "$ARCH" = "um" ] ; then
71 packagename=user-mode-linux-$version
72fi
73
74# Try to determine maintainer and email values
75if [ -n "$DEBEMAIL" ]; then
76 email=$DEBEMAIL
77elif [ -n "$EMAIL" ]; then
78 email=$EMAIL
79else
80 email=$(id -nu)@$(hostname -f 2>/dev/null || hostname)
81fi
82if [ -n "$DEBFULLNAME" ]; then
83 name=$DEBFULLNAME
84elif [ -n "$NAME" ]; then
85 name=$NAME
86else
87 name="Anonymous"
88fi
89maintainer="$name <$email>"
90
91# Try to determine distribution
92if [ -n "$KDEB_CHANGELOG_DIST" ]; then
93 distribution=$KDEB_CHANGELOG_DIST
94# In some cases lsb_release returns the codename as n/a, which breaks dpkg-parsechangelog
95elif distribution=$(lsb_release -cs 2>/dev/null) && [ -n "$distribution" ] && [ "$distribution" != "n/a" ]; then
96 : # nothing to do in this case
97else
98 distribution="unstable"
99 echo >&2 "Using default distribution of 'unstable' in the changelog"
100 echo >&2 "Install lsb-release or set \$KDEB_CHANGELOG_DIST explicitly"
101fi
102
103mkdir -p debian/
104echo $debarch > debian/arch
105
106# Generate a simple changelog template
107cat <<EOF > debian/changelog
108$sourcename ($packageversion) $distribution; urgency=low
109
110 * Custom built Linux kernel.
111
112 -- $maintainer $(date -R)
113EOF
114
115# Generate copyright file
116cat <<EOF > debian/copyright
117This is a packacked upstream version of the Linux kernel.
118
119The sources may be found at most Linux archive sites, including:
120https://www.kernel.org/pub/linux/kernel
121
122Copyright: 1991 - 2018 Linus Torvalds and others.
123
124The git repository for mainline kernel development is at:
125git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
126
127 This program is free software; you can redistribute it and/or modify
128 it under the terms of the GNU General Public License as published by
129 the Free Software Foundation; version 2 dated June, 1991.
130
131On Debian GNU/Linux systems, the complete text of the GNU General Public
132License version 2 can be found in \`/usr/share/common-licenses/GPL-2'.
133EOF
134
135# Generate a control file
136cat <<EOF > debian/control
137Source: $sourcename
138Section: kernel
139Priority: optional
140Maintainer: $maintainer
141Build-Depends: bc, kmod, cpio
142Homepage: http://www.kernel.org/
143
144Package: $packagename
145Architecture: $debarch
146Description: Linux kernel, version $version
147 This package contains the Linux kernel, modules and corresponding other
148 files, version: $version.
149
150Package: $kernel_headers_packagename
151Architecture: $debarch
152Description: Linux kernel headers for $version on $debarch
153 This package provides kernel header files for $version on $debarch
154 .
155 This is useful for people who need to build external modules
156
157Package: linux-libc-dev
158Section: devel
159Provides: linux-kernel-headers
160Architecture: $debarch
161Description: Linux support headers for userspace development
162 This package provides userspaces headers from the Linux kernel. These headers
163 are used by the installed headers for GNU glibc and other system libraries.
164
165Package: $dbg_packagename
166Section: debug
167Architecture: $debarch
168Description: Linux kernel debugging symbols for $version
169 This package will come in handy if you need to debug the kernel. It provides
170 all the necessary debug symbols for the kernel and its modules.
171EOF
172
173cat <<EOF > debian/rules
174#!$(command -v $MAKE) -f
175
176build:
177 \$(MAKE) KERNELRELEASE=${version} ARCH=${ARCH} KBUILD_SRC=
178
179binary-arch:
180 \$(MAKE) KERNELRELEASE=${version} ARCH=${ARCH} KBUILD_SRC= intdeb-pkg
181
182clean:
183 rm -rf debian/*tmp debian/files
184 \$(MAKE) clean
185
186binary: binary-arch
187EOF
188
189exit 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