Merge tag 'drm-misc-next-fixes-2021-05-06' of git://anongit.freedesktop.org/drm/drm...
[platform/kernel/linux-starfive.git] / scripts / setlocalversion
1 #!/bin/sh
2 # SPDX-License-Identifier: GPL-2.0
3 #
4 # This scripts adds local version information from the version
5 # control systems git, mercurial (hg) and subversion (svn).
6 #
7 # If something goes wrong, send a mail the kernel build mailinglist
8 # (see MAINTAINERS) and CC Nico Schottelius
9 # <nico-linuxsetlocalversion -at- schottelius.org>.
10 #
11 #
12
13 usage() {
14         echo "Usage: $0 [--save-scmversion] [srctree]" >&2
15         exit 1
16 }
17
18 scm_only=false
19 srctree=.
20 if test "$1" = "--save-scmversion"; then
21         scm_only=true
22         shift
23 fi
24 if test $# -gt 0; then
25         srctree=$1
26         shift
27 fi
28 if test $# -gt 0 -o ! -d "$srctree"; then
29         usage
30 fi
31
32 scm_version()
33 {
34         local short
35         short=false
36
37         cd "$srctree"
38         if test -e .scmversion; then
39                 cat .scmversion
40                 return
41         fi
42         if test "$1" = "--short"; then
43                 short=true
44         fi
45
46         # Check for git and a git repo.
47         if test -z "$(git rev-parse --show-cdup 2>/dev/null)" &&
48            head=$(git rev-parse --verify HEAD 2>/dev/null); then
49
50                 # If we are at a tagged commit (like "v2.6.30-rc6"), we ignore
51                 # it, because this version is defined in the top level Makefile.
52                 if [ -z "$(git describe --exact-match 2>/dev/null)" ]; then
53
54                         # If only the short version is requested, don't bother
55                         # running further git commands
56                         if $short; then
57                                 echo "+"
58                                 return
59                         fi
60                         # If we are past a tagged commit (like
61                         # "v2.6.30-rc5-302-g72357d5"), we pretty print it.
62                         #
63                         # Ensure the abbreviated sha1 has exactly 12
64                         # hex characters, to make the output
65                         # independent of git version, local
66                         # core.abbrev settings and/or total number of
67                         # objects in the current repository - passing
68                         # --abbrev=12 ensures a minimum of 12, and the
69                         # awk substr() then picks the 'g' and first 12
70                         # hex chars.
71                         if atag="$(git describe --abbrev=12 2>/dev/null)"; then
72                                 echo "$atag" | awk -F- '{printf("-%05d-%s", $(NF-1),substr($(NF),0,13))}'
73
74                         # If we don't have a tag at all we print -g{commitish},
75                         # again using exactly 12 hex chars.
76                         else
77                                 head="$(echo $head | cut -c1-12)"
78                                 printf '%s%s' -g $head
79                         fi
80                 fi
81
82                 # Is this git on svn?
83                 if git config --get svn-remote.svn.url >/dev/null; then
84                         printf -- '-svn%s' "$(git svn find-rev $head)"
85                 fi
86
87                 # Check for uncommitted changes.
88                 # First, with git-status, but --no-optional-locks is only
89                 # supported in git >= 2.14, so fall back to git-diff-index if
90                 # it fails. Note that git-diff-index does not refresh the
91                 # index, so it may give misleading results. See
92                 # git-update-index(1), git-diff-index(1), and git-status(1).
93                 if {
94                         git --no-optional-locks status -uno --porcelain 2>/dev/null ||
95                         git diff-index --name-only HEAD
96                 } | grep -qvE '^(.. )?scripts/package'; then
97                         printf '%s' -dirty
98                 fi
99
100                 # All done with git
101                 return
102         fi
103
104         # Check for mercurial and a mercurial repo.
105         if test -d .hg && hgid=$(hg id 2>/dev/null); then
106                 # Do we have an tagged version?  If so, latesttagdistance == 1
107                 if [ "$(hg log -r . --template '{latesttagdistance}')" = "1" ]; then
108                         id=$(hg log -r . --template '{latesttag}')
109                         printf '%s%s' -hg "$id"
110                 else
111                         tag=$(printf '%s' "$hgid" | cut -d' ' -f2)
112                         if [ -z "$tag" -o "$tag" = tip ]; then
113                                 id=$(printf '%s' "$hgid" | sed 's/[+ ].*//')
114                                 printf '%s%s' -hg "$id"
115                         fi
116                 fi
117
118                 # Are there uncommitted changes?
119                 # These are represented by + after the changeset id.
120                 case "$hgid" in
121                         *+|*+\ *) printf '%s' -dirty ;;
122                 esac
123
124                 # All done with mercurial
125                 return
126         fi
127
128         # Check for svn and a svn repo.
129         if rev=$(LANG= LC_ALL= LC_MESSAGES=C svn info 2>/dev/null | grep '^Last Changed Rev'); then
130                 rev=$(echo $rev | awk '{print $NF}')
131                 printf -- '-svn%s' "$rev"
132
133                 # All done with svn
134                 return
135         fi
136 }
137
138 collect_files()
139 {
140         local file res=
141
142         for file; do
143                 case "$file" in
144                 *\~*)
145                         continue
146                         ;;
147                 esac
148                 if test -e "$file"; then
149                         res="$res$(cat "$file")"
150                 fi
151         done
152         echo "$res"
153 }
154
155 if $scm_only; then
156         if test ! -e .scmversion; then
157                 res=$(scm_version)
158                 echo "$res" >.scmversion
159         fi
160         exit
161 fi
162
163 if test -e include/config/auto.conf; then
164         . include/config/auto.conf
165 else
166         echo "Error: kernelrelease not valid - run 'make prepare' to update it" >&2
167         exit 1
168 fi
169
170 # localversion* files in the build and source directory
171 res="$(collect_files localversion*)"
172 if test ! "$srctree" -ef .; then
173         res="$res$(collect_files "$srctree"/localversion*)"
174 fi
175
176 # CONFIG_LOCALVERSION and LOCALVERSION (if set)
177 res="${res}${CONFIG_LOCALVERSION}${LOCALVERSION}"
178
179 # scm version string if not at a tagged commit
180 if test "$CONFIG_LOCALVERSION_AUTO" = "y"; then
181         # full scm version string
182         res="$res$(scm_version)"
183 else
184         # append a plus sign if the repository is not in a clean
185         # annotated or signed tagged state (as git describe only
186         # looks at signed or annotated tags - git tag -a/-s) and
187         # LOCALVERSION= is not specified
188         if test "${LOCALVERSION+set}" != "set"; then
189                 scm=$(scm_version --short)
190                 res="$res${scm:++}"
191         fi
192 fi
193
194 echo "$res"