xref: /openbmc/qemu/scripts/archive-source.sh (revision ebe15582) 
1#!/bin/bash
2#
3# Author: Fam Zheng <famz@redhat.com>
4#
5# Archive source tree, including submodules. This is created for test code to
6# export the source files, in order to be built in a different environment,
7# such as in a docker instance or VM.
8#
9# This code is licensed under the GPL version 2 or later.  See
10# the COPYING file in the top-level directory.
11
12error() {
13    printf %s\\n "$*" >&2
14    exit 1
15}
16
17if test $# -lt 1; then
18    error "Usage: $0 <output tarball>"
19fi
20
21tar_file=$(realpath "$1")
22sub_tdir=$(mktemp -d "${tar_file%.tar}.sub.XXXXXXXX")
23sub_file="${sub_tdir}/submodule.tar"
24
25# We want a predictable list of submodules for builds, that is
26# independent of what the developer currently has initialized
27# in their checkout, because the build environment is completely
28# different to the host OS.
29submodules="dtc slirp ui/keycodemapdb tests/fp/berkeley-softfloat-3 tests/fp/berkeley-testfloat-3"
30sub_deinit=""
31
32function cleanup() {
33    local status=$?
34    rm -rf "$sub_tdir"
35    if test "$sub_deinit" != ""; then
36        git submodule deinit $sub_deinit
37    fi
38    exit $status
39}
40trap "cleanup" 0 1 2 3 15
41
42function tree_ish() {
43    local retval='HEAD'
44    if ! git diff-index --quiet --ignore-submodules=all HEAD -- &>/dev/null
45    then
46        retval=$(git stash create)
47    fi
48    echo "$retval"
49}
50
51git archive --format tar "$(tree_ish)" > "$tar_file"
52test $? -ne 0 && error "failed to archive qemu"
53for sm in $submodules; do
54    status="$(git submodule status "$sm")"
55    smhash="${status#[ +-]}"
56    smhash="${smhash%% *}"
57    case "$status" in
58        -*)
59            sub_deinit="$sub_deinit $sm"
60            git submodule update --init "$sm"
61            test $? -ne 0 && error "failed to update submodule $sm"
62            ;;
63        +*)
64            echo "WARNING: submodule $sm is out of sync"
65            ;;
66    esac
67    (cd $sm; git archive --format tar --prefix "$sm/" $(tree_ish)) > "$sub_file"
68    test $? -ne 0 && error "failed to archive submodule $sm ($smhash)"
69    tar --concatenate --file "$tar_file" "$sub_file"
70    test $? -ne 0 && error "failed append submodule $sm to $tar_file"
71done
72exit 0
73