xref: /openbmc/u-boot/scripts/setlocalversion (revision 2a6e3869)
1#!/bin/sh
2#
3# This scripts adds local version information from the version
4# control systems git, mercurial (hg) and subversion (svn).
5#
6# It was originally copied from the Linux kernel v3.2.0-rc4 and modified
7# to support the U-Boot build-system.
8#
9
10usage() {
11	echo "Usage: $0 [--save-scmversion] [srctree]" >&2
12	exit 1
13}
14
15scm_only=false
16srctree=.
17if test "$1" = "--save-scmversion"; then
18	scm_only=true
19	shift
20fi
21if test $# -gt 0; then
22	srctree=$1
23	shift
24fi
25if test $# -gt 0 -o ! -d "$srctree"; then
26	usage
27fi
28
29scm_version()
30{
31	local short
32	short=false
33
34	cd "$srctree"
35	if test -e .scmversion; then
36		cat .scmversion
37		return
38	fi
39	if test "$1" = "--short"; then
40		short=true
41	fi
42
43	# Check for git and a git repo.
44	if test -e .git && head=`git rev-parse --verify --short HEAD 2>/dev/null`; then
45
46		# If we are at a tagged commit (like "v2.6.30-rc6"), we ignore
47		# it, because this version is defined in the top level Makefile.
48		if [ -z "`git describe --exact-match 2>/dev/null`" ]; then
49
50			# If only the short version is requested, don't bother
51			# running further git commands
52			if $short; then
53				echo "+"
54				return
55			fi
56			# If we are past a tagged commit (like
57			# "v2.6.30-rc5-302-g72357d5"), we pretty print it.
58			if atag="`git describe 2>/dev/null`"; then
59				echo "$atag" | awk -F- '{printf("-%05d-%s", $(NF-1),$(NF))}'
60
61			# If we don't have a tag at all we print -g{commitish}.
62			else
63				printf '%s%s' -g $head
64			fi
65		fi
66
67		# Is this git on svn?
68		if git config --get svn-remote.svn.url >/dev/null; then
69			printf -- '-svn%s' "`git svn find-rev $head`"
70		fi
71
72		# Update index only on r/w media
73		[ -w . ] && git update-index --refresh --unmerged > /dev/null
74
75		# Check for uncommitted changes
76		if git diff-index --name-only HEAD | grep -v "^scripts/package" \
77		    | read dummy; then
78			printf '%s' -dirty
79		fi
80
81		# All done with git
82		return
83	fi
84
85	# Check for mercurial and a mercurial repo.
86	if test -d .hg && hgid=`hg id 2>/dev/null`; then
87		# Do we have an tagged version?  If so, latesttagdistance == 1
88		if [ "`hg log -r . --template '{latesttagdistance}'`" == "1" ]; then
89			id=`hg log -r . --template '{latesttag}'`
90			printf '%s%s' -hg "$id"
91		else
92			tag=`printf '%s' "$hgid" | cut -d' ' -f2`
93			if [ -z "$tag" -o "$tag" = tip ]; then
94				id=`printf '%s' "$hgid" | sed 's/[+ ].*//'`
95				printf '%s%s' -hg "$id"
96			fi
97		fi
98
99		# Are there uncommitted changes?
100		# These are represented by + after the changeset id.
101		case "$hgid" in
102			*+|*+\ *) printf '%s' -dirty ;;
103		esac
104
105		# All done with mercurial
106		return
107	fi
108
109	# Check for svn and a svn repo.
110	if rev=`svn info 2>/dev/null | grep '^Last Changed Rev'`; then
111		rev=`echo $rev | awk '{print $NF}'`
112		printf -- '-svn%s' "$rev"
113
114		# All done with svn
115		return
116	fi
117}
118
119collect_files()
120{
121	local file res
122
123	for file; do
124		case "$file" in
125		*\~*)
126			continue
127			;;
128		esac
129		if test -e "$file"; then
130			res="$res$(cat "$file")"
131		fi
132	done
133	echo "$res"
134}
135
136if $scm_only; then
137	if test ! -e .scmversion; then
138		res=$(scm_version)
139		echo "$res" >.scmversion
140	fi
141	exit
142fi
143
144#if test -e include/config/auto.conf; then
145#	. include/config/auto.conf
146#else
147#	echo "Error: kernelrelease not valid - run 'make prepare' to update it"
148#	exit 1
149#fi
150CONFIG_LOCALVERSION=
151CONFIG_LOCALVERSION_AUTO=y
152
153# localversion* files in the build and source directory
154res="$(collect_files localversion*)"
155if test ! "$srctree" -ef .; then
156	res="$res$(collect_files "$srctree"/localversion*)"
157fi
158
159# CONFIG_LOCALVERSION and LOCALVERSION (if set)
160res="${res}${CONFIG_LOCALVERSION}${LOCALVERSION}"
161
162# scm version string if not at a tagged commit
163if test "$CONFIG_LOCALVERSION_AUTO" = "y"; then
164	# full scm version string
165	res="$res$(scm_version)"
166else
167	# append a plus sign if the repository is not in a clean
168	# annotated or signed tagged state (as git describe only
169	# looks at signed or annotated tags - git tag -a/-s) and
170	# LOCALVERSION= is not specified
171	if test "${LOCALVERSION+set}" != "set"; then
172		scm=$(scm_version --short)
173		res="$res${scm:++}"
174	fi
175fi
176
177echo "$res"
178