xref: /freebsd/release/release.sh (revision d03c82c28da86e0812b98b051d24ae5980804ad7)
1#!/bin/sh
2#-
3# Copyright (c) 2020-2021 Rubicon Communications, LLC (netgate.com)
4# Copyright (c) 2013-2019 The FreeBSD Foundation
5# Copyright (c) 2013 Glen Barber
6# Copyright (c) 2011 Nathan Whitehorn
7# All rights reserved.
8#
9# Portions of this software were developed by Glen Barber
10# under sponsorship from the FreeBSD Foundation.
11#
12# Redistribution and use in source and binary forms, with or without
13# modification, are permitted provided that the following conditions
14# are met:
15# 1. Redistributions of source code must retain the above copyright
16#    notice, this list of conditions and the following disclaimer.
17# 2. Redistributions in binary form must reproduce the above copyright
18#    notice, this list of conditions and the following disclaimer in the
19#    documentation and/or other materials provided with the distribution.
20#
21# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
22# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24# ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
25# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31# SUCH DAMAGE.
32#
33# release.sh: check out source trees, and build release components with
34#  totally clean, fresh trees.
35# Based on release/generate-release.sh written by Nathan Whitehorn
36#
37
38export PATH="/bin:/sbin:/usr/bin:/usr/sbin:/usr/local/bin"
39
40VERSION=3
41
42# Prototypes that can be redefined per-chroot or per-target.
43load_chroot_env() { }
44load_target_env() { }
45buildenv_setup() { }
46
47usage() {
48	echo "Usage: $0 [-c release.conf]"
49	exit 1
50}
51
52# env_setup(): Set up the default build environment variables, such as the
53# CHROOTDIR, VCSCMD, GITROOT, etc.  This is called before the release.conf
54# file is sourced, if '-c <release.conf>' is specified.
55env_setup() {
56	# The directory within which the release will be built.
57	CHROOTDIR="/scratch"
58	if [ -z "${RELENGDIR}" ]; then
59		export RELENGDIR="$(dirname $(realpath ${0}))"
60	fi
61
62	# The default version control system command to obtain the sources.
63	for _dir in /usr/bin /usr/local/bin; do
64		[ -x "${_dir}/git" ] && VCSCMD="/${_dir}/git"
65		[ ! -z "${VCSCMD}" ] && break 2
66	done
67
68	if [ -z "${VCSCMD}" -a -z "${NOGIT}" ]; then
69		echo "*** The devel/git port/package is required."
70		exit 1
71	fi
72	VCSCMD="/usr/local/bin/git clone -q"
73
74	# The default git checkout server, and branches for src/, doc/,
75	# and ports/.
76	GITROOT="https://git.FreeBSD.org/"
77	SRCBRANCH="main"
78	PORTBRANCH="main"
79	GITSRC="src.git"
80	GITPORTS="ports.git"
81
82	# Set for embedded device builds.
83	EMBEDDEDBUILD=
84
85	# The default make.conf and src.conf to use.  Set to /dev/null
86	# by default to avoid polluting the chroot(8) environment with
87	# non-default settings.
88	MAKE_CONF="/dev/null"
89	SRC_CONF="/dev/null"
90
91	# The number of make(1) jobs, defaults to the number of CPUs available
92	# for buildworld, and half of number of CPUs available for buildkernel
93	# and 'make release'.
94	WORLD_FLAGS="-j$(sysctl -n hw.ncpu)"
95	KERNEL_FLAGS="-j$(( $(( $(sysctl -n hw.ncpu) + 1 )) / 2))"
96	RELEASE_FLAGS="-j$(( $(( $(sysctl -n hw.ncpu) + 1 )) / 2))"
97
98	MAKE_FLAGS="-s"
99
100	# The name of the kernel to build, defaults to GENERIC.
101	KERNEL="GENERIC"
102
103	# Set to non-empty value to disable checkout of doc/ and/or ports/.
104	NOPORTS=
105
106	# Set to non-empty value to disable distributing source tree.
107	NOSRC=
108
109	# Set to non-empty value to build dvd1.iso as part of the release.
110	WITH_DVD=
111	WITH_COMPRESSED_IMAGES=
112
113	# Set to non-empty value to build virtual machine images as part of
114	# the release.
115	WITH_VMIMAGES=
116	WITH_COMPRESSED_VMIMAGES=
117	XZ_THREADS=0
118
119	# Set to non-empty value to build virtual machine images for various
120	# cloud providers as part of the release.
121	WITH_CLOUDWARE=
122
123	# Set to non-empty to build OCI images as part of the release
124	WITH_OCIIMAGES=
125
126	return 0
127} # env_setup()
128
129# env_check(): Perform sanity tests on the build environment, such as ensuring
130# files/directories exist, as well as adding backwards-compatibility hacks if
131# necessary.  This is called unconditionally, and overrides the defaults set
132# in env_setup() if '-c <release.conf>' is specified.
133env_check() {
134	chroot_build_release_cmd="chroot_build_release"
135
136	# Prefix the branches with the GITROOT for the full checkout URL.
137	SRC="${GITROOT}${GITSRC}"
138	PORT="${GITROOT}${GITPORTS}"
139
140	if [ -n "${EMBEDDEDBUILD}" ]; then
141		WITH_DVD=
142		WITH_COMPRESSED_IMAGES=
143		case ${EMBEDDED_TARGET}:${EMBEDDED_TARGET_ARCH} in
144			arm:arm*|arm64:aarch64|riscv:riscv64*)
145				chroot_build_release_cmd="chroot_arm_build_release"
146				;;
147			*)
148				;;
149		esac
150	fi
151
152	# If NOSRC and/or NOPORTS are unset, they must not pass to make
153	# as variables.  The release makefile verifies definedness of the
154	# NOPORTS variable instead of its value.
155	SRCPORTS=
156	if [ -n "${NOPORTS}" ]; then
157		SRCPORTS="NOPORTS=yes"
158	fi
159	if [ -n "${NOSRC}" ]; then
160		SRCPORTS="${SRCPORTS}${SRCPORTS:+ }NOSRC=yes"
161	fi
162
163	# The aggregated build-time flags based upon variables defined within
164	# this file, unless overridden by release.conf.  In most cases, these
165	# will not need to be changed.
166	CONF_FILES="__MAKE_CONF=${MAKE_CONF} SRCCONF=${SRC_CONF}"
167	NOCONF_FILES="__MAKE_CONF=/dev/null SRCCONF=/dev/null"
168	if [ -n "${TARGET}" ] && [ -n "${TARGET_ARCH}" ]; then
169		ARCH_FLAGS="TARGET=${TARGET} TARGET_ARCH=${TARGET_ARCH}"
170	else
171		ARCH_FLAGS=
172	fi
173
174	if [ -z "${CHROOTDIR}" ]; then
175		echo "Please set CHROOTDIR."
176		exit 1
177	fi
178
179	if [ $(id -u) -ne 0 ]; then
180		echo "Needs to be run as root."
181		exit 1
182	fi
183
184	# Unset CHROOTBUILD_SKIP if the chroot(8) does not appear to exist.
185	if [ ! -z "${CHROOTBUILD_SKIP}" -a ! -e ${CHROOTDIR}/bin/sh ]; then
186		CHROOTBUILD_SKIP=
187	fi
188
189	CHROOT_MAKEENV="${CHROOT_MAKEENV} \
190		MAKEOBJDIRPREFIX=${CHROOTDIR}/tmp/obj"
191	CHROOT_WMAKEFLAGS="${MAKE_FLAGS} ${WORLD_FLAGS} ${NOCONF_FILES}"
192	CHROOT_IMAKEFLAGS="${WORLD_FLAGS} ${NOCONF_FILES}"
193	CHROOT_DMAKEFLAGS="${WORLD_FLAGS} ${NOCONF_FILES}"
194	RELEASE_WMAKEFLAGS="${MAKE_FLAGS} ${WORLD_FLAGS} ${ARCH_FLAGS} \
195		${CONF_FILES}"
196	RELEASE_KMAKEFLAGS="${MAKE_FLAGS} ${KERNEL_FLAGS} \
197		KERNCONF=\"${KERNEL}\" ${ARCH_FLAGS} ${CONF_FILES}"
198	RELEASE_RMAKEFLAGS="${ARCH_FLAGS} ${RELEASE_FLAGS} \
199		KERNCONF=\"${KERNEL}\" ${CONF_FILES} ${SRCPORTS} \
200		WITH_DVD=${WITH_DVD} WITH_VMIMAGES=${WITH_VMIMAGES} \
201		WITH_CLOUDWARE=${WITH_CLOUDWARE} WITH_OCIIMAGES=${WITH_OCIIMAGES} \
202		XZ_THREADS=${XZ_THREADS}"
203
204	return 0
205} # env_check()
206
207# chroot_setup(): Prepare the build chroot environment for the release build.
208chroot_setup() {
209	load_chroot_env
210	mkdir -p ${CHROOTDIR}/usr
211
212	if [ -z "${SRC_UPDATE_SKIP}" ]; then
213		if [ -d "${CHROOTDIR}/usr/src/.git" ]; then
214			git -C ${CHROOTDIR}/usr/src pull -q
215		else
216			${VCSCMD} ${SRC} -b ${SRCBRANCH} ${CHROOTDIR}/usr/src
217		fi
218	fi
219	if [ -z "${NOPORTS}" ] && [ -z "${PORTS_UPDATE_SKIP}" ]; then
220		if [ -d "${CHROOTDIR}/usr/ports/.git" ]; then
221			git -C ${CHROOTDIR}/usr/ports pull -q
222		else
223			${VCSCMD} ${PORT} -b ${PORTBRANCH} ${CHROOTDIR}/usr/ports
224		fi
225	fi
226
227	if [ -z "${CHROOTBUILD_SKIP}" ]; then
228		cd ${CHROOTDIR}/usr/src
229		env ${CHROOT_MAKEENV} make ${CHROOT_WMAKEFLAGS} buildworld
230		env ${CHROOT_MAKEENV} make ${CHROOT_IMAKEFLAGS} installworld \
231			DESTDIR=${CHROOTDIR}
232		env ${CHROOT_MAKEENV} make ${CHROOT_DMAKEFLAGS} distribution \
233			DESTDIR=${CHROOTDIR}
234	fi
235
236	return 0
237} # chroot_setup()
238
239# extra_chroot_setup(): Prepare anything additional within the build
240# necessary for the release build.
241extra_chroot_setup() {
242	mkdir -p ${CHROOTDIR}/dev
243	mount -t devfs devfs ${CHROOTDIR}/dev
244	[ -e /etc/resolv.conf -a ! -e ${CHROOTDIR}/etc/resolv.conf ] && \
245		cp /etc/resolv.conf ${CHROOTDIR}/etc/resolv.conf
246	# Run ldconfig(8) in the chroot directory so /var/run/ld-elf*.so.hints
247	# is created.  This is needed by ports-mgmt/pkg.
248	eval chroot ${CHROOTDIR} /etc/rc.d/ldconfig forcerestart
249
250	# If MAKE_CONF and/or SRC_CONF are set and not character devices
251	# (/dev/null), copy them to the chroot.
252	if [ -e ${MAKE_CONF} ] && [ ! -c ${MAKE_CONF} ]; then
253		mkdir -p ${CHROOTDIR}/$(dirname ${MAKE_CONF})
254		cp ${MAKE_CONF} ${CHROOTDIR}/${MAKE_CONF}
255	fi
256	if [ -e ${SRC_CONF} ] && [ ! -c ${SRC_CONF} ]; then
257		mkdir -p ${CHROOTDIR}/$(dirname ${SRC_CONF})
258		cp ${SRC_CONF} ${CHROOTDIR}/${SRC_CONF}
259	fi
260
261	_gitcmd="$(which git)"
262	if [ -z "${NOGIT}" -a -z "${_gitcmd}" ]; then
263		# Install git from ports if the ports tree is available;
264		# otherwise install the pkg.
265		if [ -d ${CHROOTDIR}/usr/ports ]; then
266			# Trick the ports 'run-autotools-fixup' target to do the right
267			# thing.
268			_OSVERSION=$(chroot ${CHROOTDIR} /usr/bin/uname -U)
269			REVISION=$(chroot ${CHROOTDIR} make -C /usr/src/release -V REVISION)
270			BRANCH=$(chroot ${CHROOTDIR} make -C /usr/src/release -V BRANCH)
271			UNAME_r=${REVISION}-${BRANCH}
272			GITUNSETOPTS="CONTRIB CURL CVS GITWEB GUI HTMLDOCS"
273			GITUNSETOPTS="${GITUNSETOPTS} ICONV NLS P4 PERL"
274			GITUNSETOPTS="${GITUNSETOPTS} SEND_EMAIL SUBTREE SVN"
275			GITUNSETOPTS="${GITUNSETOPTS} PCRE PCRE2"
276			PBUILD_FLAGS="OSVERSION=${_OSVERSION} BATCH=yes"
277			PBUILD_FLAGS="${PBUILD_FLAGS} UNAME_r=${UNAME_r}"
278			PBUILD_FLAGS="${PBUILD_FLAGS} OSREL=${REVISION}"
279			PBUILD_FLAGS="${PBUILD_FLAGS} WRKDIRPREFIX=/tmp/ports"
280			PBUILD_FLAGS="${PBUILD_FLAGS} DISTDIR=/tmp/distfiles"
281			eval chroot ${CHROOTDIR} env OPTIONS_UNSET=\"${GITUNSETOPTS}\" \
282				${PBUILD_FLAGS} \
283				make -C /usr/ports/devel/git FORCE_PKG_REGISTER=1 \
284				WRKDIRPREFIX=/tmp/ports \
285				DISTDIR=/tmp/distfiles \
286				install clean distclean
287		else
288			eval chroot ${CHROOTDIR} env ASSUME_ALWAYS_YES=yes \
289				pkg install -y devel/git
290			eval chroot ${CHROOTDIR} env ASSUME_ALWAYS_YES=yes \
291				pkg clean -y
292		fi
293	fi
294
295	if [ ! -z "${WITH_OCIIMAGES}" ]; then
296		# Install buildah and skopeo from ports if the ports tree is available;
297		# otherwise install the pkg.
298		if [ -d ${CHROOTDIR}/usr/ports ]; then
299			# Trick the ports 'run-autotools-fixup' target to do the right
300			# thing.
301			_OSVERSION=$(chroot ${CHROOTDIR} /usr/bin/uname -U)
302			REVISION=$(chroot ${CHROOTDIR} make -C /usr/src/release -V REVISION)
303			BRANCH=$(chroot ${CHROOTDIR} make -C /usr/src/release -V BRANCH)
304			UNAME_r=${REVISION}-${BRANCH}
305			GITUNSETOPTS="CONTRIB CURL CVS GITWEB GUI HTMLDOCS"
306			GITUNSETOPTS="${GITUNSETOPTS} ICONV NLS P4 PERL"
307			GITUNSETOPTS="${GITUNSETOPTS} SEND_EMAIL SUBTREE SVN"
308			GITUNSETOPTS="${GITUNSETOPTS} PCRE PCRE2"
309			PBUILD_FLAGS="OSVERSION=${_OSVERSION} BATCH=yes"
310			PBUILD_FLAGS="${PBUILD_FLAGS} UNAME_r=${UNAME_r}"
311			PBUILD_FLAGS="${PBUILD_FLAGS} OSREL=${REVISION}"
312			PBUILD_FLAGS="${PBUILD_FLAGS} WRKDIRPREFIX=/tmp/ports"
313			PBUILD_FLAGS="${PBUILD_FLAGS} DISTDIR=/tmp/distfiles"
314			for _PORT in sysutils/buildah sysutils/skopeo; do
315				eval chroot ${CHROOTDIR} env ${PBUILD_FLAGS} make -C \
316				     /usr/ports/${_PORT} \
317				     FORCE_PKG_REGISTER=1 deinstall install clean distclean
318			done
319		else
320			eval chroot ${CHROOTDIR} env ASSUME_ALWAYS_YES=yes \
321				pkg install -y sysutils/buildah sysutils/skopeo
322			eval chroot ${CHROOTDIR} env ASSUME_ALWAYS_YES=yes \
323				pkg clean -y
324		fi
325		# Use the vfs storage driver so that this works whether or not
326		# the build directory is on ZFS. The images are small so the
327		# performance difference is negligible.
328		eval chroot ${CHROOTDIR} sed -I .bak -e '/^driver/s/zfs/vfs/' /usr/local/etc/containers/storage.conf
329		# Remove any stray images from previous builds
330		eval chroot ${CHROOTDIR} buildah rmi -af
331	fi
332
333	if [ ! -z "${EMBEDDEDPORTS}" ]; then
334		_OSVERSION=$(chroot ${CHROOTDIR} /usr/bin/uname -U)
335		REVISION=$(chroot ${CHROOTDIR} make -C /usr/src/release -V REVISION)
336		BRANCH=$(chroot ${CHROOTDIR} make -C /usr/src/release -V BRANCH)
337		UNAME_r=${REVISION}-${BRANCH}
338		PBUILD_FLAGS="OSVERSION=${_OSVERSION} BATCH=yes"
339		PBUILD_FLAGS="${PBUILD_FLAGS} UNAME_r=${UNAME_r}"
340		PBUILD_FLAGS="${PBUILD_FLAGS} OSREL=${REVISION}"
341		PBUILD_FLAGS="${PBUILD_FLAGS} WRKDIRPREFIX=/tmp/ports"
342		PBUILD_FLAGS="${PBUILD_FLAGS} DISTDIR=/tmp/distfiles"
343		for _PORT in ${EMBEDDEDPORTS}; do
344			eval chroot ${CHROOTDIR} env ${PBUILD_FLAGS} make -C \
345				/usr/ports/${_PORT} \
346				FORCE_PKG_REGISTER=1 deinstall install clean distclean
347		done
348	fi
349
350	buildenv_setup
351
352	return 0
353} # extra_chroot_setup()
354
355# chroot_build_target(): Build the userland and kernel for the build target.
356chroot_build_target() {
357	load_target_env
358	if [ ! -z "${EMBEDDEDBUILD}" ]; then
359		RELEASE_WMAKEFLAGS="${RELEASE_WMAKEFLAGS} \
360			TARGET=${EMBEDDED_TARGET} \
361			TARGET_ARCH=${EMBEDDED_TARGET_ARCH}"
362		RELEASE_KMAKEFLAGS="${RELEASE_KMAKEFLAGS} \
363			TARGET=${EMBEDDED_TARGET} \
364			TARGET_ARCH=${EMBEDDED_TARGET_ARCH}"
365	fi
366	eval chroot ${CHROOTDIR} make -C /usr/src ${RELEASE_WMAKEFLAGS} buildworld
367	eval chroot ${CHROOTDIR} make -C /usr/src ${RELEASE_KMAKEFLAGS} buildkernel
368	if [ ! -z "${WITH_OCIIMAGES}" ]; then
369		eval chroot ${CHROOTDIR} make -C /usr/src ${RELEASE_WMAKEFLAGS} packages
370	fi
371
372	return 0
373} # chroot_build_target
374
375# chroot_build_release(): Invoke the 'make release' target.
376chroot_build_release() {
377	load_target_env
378	if [ ! -z "${WITH_VMIMAGES}" ]; then
379		if [ -z "${VMFORMATS}" ]; then
380			VMFORMATS="$(eval chroot ${CHROOTDIR} \
381				make -C /usr/src/release -V VMFORMATS)"
382		fi
383		if [ -z "${VMSIZE}" ]; then
384			VMSIZE="$(eval chroot ${CHROOTDIR} \
385				make -C /usr/src/release ${ARCH_FLAGS} -V VMSIZE)"
386		fi
387		RELEASE_RMAKEFLAGS="${RELEASE_RMAKEFLAGS} \
388			VMFORMATS=\"${VMFORMATS}\" VMSIZE=${VMSIZE}"
389	fi
390	eval chroot ${CHROOTDIR} make -C /usr/src/release \
391		${RELEASE_RMAKEFLAGS} release
392	eval chroot ${CHROOTDIR} make -C /usr/src/release \
393		${RELEASE_RMAKEFLAGS} install DESTDIR=/R \
394		WITH_COMPRESSED_IMAGES=${WITH_COMPRESSED_IMAGES} \
395		WITH_COMPRESSED_VMIMAGES=${WITH_COMPRESSED_VMIMAGES}
396
397	return 0
398} # chroot_build_release()
399
400efi_boot_name()
401{
402	case $1 in
403		arm)
404			echo "bootarm.efi"
405			;;
406		arm64)
407			echo "bootaa64.efi"
408			;;
409		amd64)
410			echo "bootx64.efi"
411			;;
412		riscv)
413			echo "bootriscv64.efi"
414			;;
415	esac
416}
417
418# chroot_arm_build_release(): Create arm SD card image.
419chroot_arm_build_release() {
420	load_target_env
421	case ${EMBEDDED_TARGET} in
422		arm|arm64|riscv)
423			if [ -e "${RELENGDIR}/tools/arm.subr" ]; then
424				. "${RELENGDIR}/tools/arm.subr"
425			fi
426			;;
427		*)
428			;;
429	esac
430	[ ! -z "${RELEASECONF}" ] && . "${RELEASECONF}"
431	export MAKE_FLAGS="${MAKE_FLAGS} TARGET=${EMBEDDED_TARGET}"
432	export MAKE_FLAGS="${MAKE_FLAGS} TARGET_ARCH=${EMBEDDED_TARGET_ARCH}"
433	export MAKE_FLAGS="${MAKE_FLAGS} ${CONF_FILES}"
434	eval chroot ${CHROOTDIR} env WITH_UNIFIED_OBJDIR=1 make ${MAKE_FLAGS} -C /usr/src/release obj
435	export WORLDDIR="$(eval chroot ${CHROOTDIR} make ${MAKE_FLAGS} -C /usr/src/release -V WORLDDIR)"
436	export OBJDIR="$(eval chroot ${CHROOTDIR} env WITH_UNIFIED_OBJDIR=1 make ${MAKE_FLAGS} -C /usr/src/release -V .OBJDIR)"
437	export DESTDIR="${OBJDIR}/${KERNEL}"
438	export IMGBASE="${CHROOTDIR}/${OBJDIR}/${BOARDNAME}.img"
439	export OSRELEASE="$(eval chroot ${CHROOTDIR} make ${MAKE_FLAGS} -C /usr/src/release \
440		TARGET=${EMBEDDED_TARGET} TARGET_ARCH=${EMBEDDED_TARGET_ARCH} \
441		-V OSRELEASE)"
442	chroot ${CHROOTDIR} mkdir -p ${DESTDIR}
443	chroot ${CHROOTDIR} truncate -s ${IMAGE_SIZE} ${IMGBASE##${CHROOTDIR}}
444	export mddev=$(chroot ${CHROOTDIR} \
445		mdconfig -f ${IMGBASE##${CHROOTDIR}} ${MD_ARGS})
446	arm_create_disk
447	arm_install_base
448	arm_install_boot
449	arm_install_uboot
450	mdconfig -d -u ${mddev}
451	chroot ${CHROOTDIR} rmdir ${DESTDIR}
452	mv ${IMGBASE} ${CHROOTDIR}/${OBJDIR}/${OSRELEASE}-${BOARDNAME}.img
453	chroot ${CHROOTDIR} mkdir -p /R
454	chroot ${CHROOTDIR} cp -p ${OBJDIR}/${OSRELEASE}-${BOARDNAME}.img \
455		/R/${OSRELEASE}-${BOARDNAME}.img
456	chroot ${CHROOTDIR} xz -T ${XZ_THREADS} /R/${OSRELEASE}-${BOARDNAME}.img
457	cd ${CHROOTDIR}/R && sha512 ${OSRELEASE}* \
458		> CHECKSUM.SHA512
459	cd ${CHROOTDIR}/R && sha256 ${OSRELEASE}* \
460		> CHECKSUM.SHA256
461
462	return 0
463} # chroot_arm_build_release()
464
465# main(): Start here.
466main() {
467	set -e # Everything must succeed
468	env_setup
469	while getopts c: opt; do
470		case ${opt} in
471			c)
472				RELEASECONF="$(realpath ${OPTARG})"
473				;;
474			\?)
475				usage
476				;;
477		esac
478	done
479	shift $(($OPTIND - 1))
480	if [ ! -z "${RELEASECONF}" ]; then
481		if [ -e "${RELEASECONF}" ]; then
482			. ${RELEASECONF}
483		else
484			echo "Nonexistent configuration file: ${RELEASECONF}"
485			echo "Using default build environment."
486		fi
487	fi
488	env_check
489	trap "umount ${CHROOTDIR}/dev" EXIT # Clean up devfs mount on exit
490	chroot_setup
491	extra_chroot_setup
492	chroot_build_target
493	${chroot_build_release_cmd}
494
495	return 0
496} # main()
497
498main "${@}"
499