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#!/bin/bash
#
# offload-build - build a PKGBUILD on a remote server using makechrootpkg.
#
# Copyright (c) 2019 by Eli Schwartz <eschwartz@archlinux.org>
#
# SPDX-License-Identifier: GPL-3.0-or-later
source /usr/share/makepkg/util/config.sh
# global defaults suitable for use by Arch staff
repo=extra
arch=x86_64
server=build.archlinux.org
die() { printf "error: $1\n" "${@:2}"; exit 1; }
usage() {
cat <<- _EOF_
Usage: ${BASH_SOURCE[0]##*/} [--repo REPO] [--arch ARCHITECTURE] [--server SERVER] -- [ARCHBUILD_ARGS]
Build a PKGBUILD on a remote server using makechrootpkg. Requires a remote user
that can run archbuild without password auth. Options passed after a -- are
passed on to archbuild, and eventually to makechrootpkg.
OPTIONS
-r, --repo Build against a specific repository (current: $repo)
-a, --arch Build against a specific architecture (current: $arch)
-s, --server Offload to a specific build server (current: $server)
-h, --help Show this help text
_EOF_
}
# option checking
while (( $# )); do
case $1 in
-h|--help)
usage
exit 0
;;
-r|--repo)
repo=$2
shift 2
;;
-a|--arch)
arch=$2
shift 2
;;
-s|--server)
server=$2
shift 2
;;
--)
shift
break
;;
*)
die "invalid argument: %s" "$1"
;;
esac
done
# multilib must be handled specially
archbuild_arch="${arch}"
if [[ $repo = multilib* ]]; then
archbuild_arch=
fi
archbuild_cmd=("${repo}${archbuild_arch:+-$archbuild_arch}-build" "$@")
trap 'rm -rf $TEMPDIR' EXIT INT TERM QUIT
# Load makepkg.conf variables to be available
load_makepkg_config
# Use a source-only tarball as an intermediate to transfer files. This
# guarantees the checksums are okay, and guarantees that all needed files are
# transferred, including local sources, install scripts, and changelogs.
export TEMPDIR=$(mktemp -d --tmpdir offload-build.XXXXXXXXXX)
export SRCPKGDEST=${TEMPDIR}
makepkg --source || die "unable to make source package"
# Temporary cosmetic workaround makepkg if SRCDEST is set somewhere else
# but an empty src dir is created in PWD. Remove once fixed in makepkg.
rmdir --ignore-fail-on-non-empty src 2>/dev/null || true
mapfile -t files < <(
# This is sort of bash golfing but it allows running a mildly complex
# command over ssh with a single connection.
# shellcheck disable=SC2145
cat "$SRCPKGDEST"/*"$SRCEXT" |
ssh $server '
temp="${XDG_CACHE_HOME:-$HOME/.cache}/offload-build" &&
mkdir -p "$temp" &&
temp=$(mktemp -d -p "$temp") &&
cd "$temp" &&
{
bsdtar --strip-components 1 -xvf - &&
script -qefc "'"${archbuild_cmd[@]@Q}"'" /dev/null &&
printf "%s\n" "" "-> build complete" &&
printf "\t%s\n" "$temp"/*
} >&2 &&
makepkg_user_config="${XDG_CONFIG_HOME:-$HOME/.config}/pacman/makepkg.conf" &&
makepkg_config="/usr/share/devtools/makepkg.conf.d/'"${arch}"'.conf" &&
if [[ -f /usr/share/devtools/makepkg.conf.d/'"${repo}"'-'"${arch}"'.conf ]]; then
makepkg_config="/usr/share/devtools/makepkg.conf.d/'"${repo}"'-'"${arch}"'.conf"
fi &&
makepkg --config <(cat "${makepkg_user_config}" "${makepkg_config}" 2>/dev/null) --packagelist &&
printf "%s\n" "${temp}/PKGBUILD"
')
if (( ${#files[@]} )); then
printf '%s\n' '' '-> copying files...'
scp "${files[@]/#/$server:}" "${TEMPDIR}/"
mv "${TEMPDIR}"/*.pkg.tar* "${PKGDEST:-${PWD}}/"
mv "${TEMPDIR}/PKGBUILD" "${PWD}/"
else
exit 1
fi
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