xref: /openbmc/linux/scripts/package/mkdebian (revision ba61bb17)
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-$version
72fi
73
74email=${DEBEMAIL-$EMAIL}
75
76# use email string directly if it contains <email>
77if echo $email | grep -q '<.*>'; then
78	maintainer=$email
79else
80	# or construct the maintainer string
81	user=${KBUILD_BUILD_USER-$(id -nu)}
82	name=${DEBFULLNAME-$user}
83	if [ -z "$email" ]; then
84		buildhost=${KBUILD_BUILD_HOST-$(hostname -f 2>/dev/null || hostname)}
85		email="$user@$buildhost"
86	fi
87	maintainer="$name <$email>"
88fi
89
90# Try to determine distribution
91if [ -n "$KDEB_CHANGELOG_DIST" ]; then
92        distribution=$KDEB_CHANGELOG_DIST
93# In some cases lsb_release returns the codename as n/a, which breaks dpkg-parsechangelog
94elif distribution=$(lsb_release -cs 2>/dev/null) && [ -n "$distribution" ] && [ "$distribution" != "n/a" ]; then
95        : # nothing to do in this case
96else
97        distribution="unstable"
98        echo >&2 "Using default distribution of 'unstable' in the changelog"
99        echo >&2 "Install lsb-release or set \$KDEB_CHANGELOG_DIST explicitly"
100fi
101
102mkdir -p debian/
103echo $debarch > debian/arch
104
105# Generate a simple changelog template
106cat <<EOF > debian/changelog
107$sourcename ($packageversion) $distribution; urgency=low
108
109  * Custom built Linux kernel.
110
111 -- $maintainer  $(date -R)
112EOF
113
114# Generate copyright file
115cat <<EOF > debian/copyright
116This is a packacked upstream version of the Linux kernel.
117
118The sources may be found at most Linux archive sites, including:
119https://www.kernel.org/pub/linux/kernel
120
121Copyright: 1991 - 2018 Linus Torvalds and others.
122
123The git repository for mainline kernel development is at:
124git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
125
126    This program is free software; you can redistribute it and/or modify
127    it under the terms of the GNU General Public License as published by
128    the Free Software Foundation; version 2 dated June, 1991.
129
130On Debian GNU/Linux systems, the complete text of the GNU General Public
131License version 2 can be found in \`/usr/share/common-licenses/GPL-2'.
132EOF
133
134# Generate a control file
135cat <<EOF > debian/control
136Source: $sourcename
137Section: kernel
138Priority: optional
139Maintainer: $maintainer
140Build-Depends: bc, kmod, cpio
141Homepage: http://www.kernel.org/
142
143Package: $packagename
144Architecture: $debarch
145Description: Linux kernel, version $version
146 This package contains the Linux kernel, modules and corresponding other
147 files, version: $version.
148
149Package: $kernel_headers_packagename
150Architecture: $debarch
151Description: Linux kernel headers for $version on $debarch
152 This package provides kernel header files for $version on $debarch
153 .
154 This is useful for people who need to build external modules
155
156Package: linux-libc-dev
157Section: devel
158Provides: linux-kernel-headers
159Architecture: $debarch
160Description: Linux support headers for userspace development
161 This package provides userspaces headers from the Linux kernel.  These headers
162 are used by the installed headers for GNU glibc and other system libraries.
163
164Package: $dbg_packagename
165Section: debug
166Architecture: $debarch
167Description: Linux kernel debugging symbols for $version
168 This package will come in handy if you need to debug the kernel. It provides
169 all the necessary debug symbols for the kernel and its modules.
170EOF
171
172cat <<EOF > debian/rules
173#!$(command -v $MAKE) -f
174
175build:
176	\$(MAKE) KERNELRELEASE=${version} ARCH=${ARCH} KBUILD_SRC=
177
178binary-arch:
179	\$(MAKE) KERNELRELEASE=${version} ARCH=${ARCH} KBUILD_SRC= intdeb-pkg
180
181clean:
182	rm -rf debian/*tmp debian/files
183	\$(MAKE) clean
184
185binary: binary-arch
186EOF
187
188exit 0
189