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| 1 | +#!/bin/sh |
| 2 | +# Print a version string. |
| 3 | +scriptversion=2010-01-28.01 |
| 4 | + |
| 5 | +# Copyright (C) 2007-2010 Free Software Foundation, Inc. |
| 6 | +# |
| 7 | +# This program is free software: you can redistribute it and/or modify |
| 8 | +# it under the terms of the GNU General Public License as published by |
| 9 | +# the Free Software Foundation; either version 3 of the License, or |
| 10 | +# (at your option) any later version. |
| 11 | +# |
| 12 | +# This program is distributed in the hope that it will be useful, |
| 13 | +# but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 15 | +# GNU General Public License for more details. |
| 16 | +# |
| 17 | +# You should have received a copy of the GNU General Public License |
| 18 | +# along with this program. If not, see <http://www.gnu.org/licenses/>. |
| 19 | + |
| 20 | +# This script is derived from GIT-VERSION-GEN from GIT: http://git.or.cz/. |
| 21 | +# It may be run two ways: |
| 22 | +# - from a git repository in which the "git describe" command below |
| 23 | +# produces useful output (thus requiring at least one signed tag) |
| 24 | +# - from a non-git-repo directory containing a .tarball-version file, which |
| 25 | +# presumes this script is invoked like "./git-version-gen .tarball-version". |
| 26 | + |
| 27 | +# In order to use intra-version strings in your project, you will need two |
| 28 | +# separate generated version string files: |
| 29 | +# |
| 30 | +# .tarball-version - present only in a distribution tarball, and not in |
| 31 | +# a checked-out repository. Created with contents that were learned at |
| 32 | +# the last time autoconf was run, and used by git-version-gen. Must not |
| 33 | +# be present in either $(srcdir) or $(builddir) for git-version-gen to |
| 34 | +# give accurate answers during normal development with a checked out tree, |
| 35 | +# but must be present in a tarball when there is no version control system. |
| 36 | +# Therefore, it cannot be used in any dependencies. GNUmakefile has |
| 37 | +# hooks to force a reconfigure at distribution time to get the value |
| 38 | +# correct, without penalizing normal development with extra reconfigures. |
| 39 | +# |
| 40 | +# .version - present in a checked-out repository and in a distribution |
| 41 | +# tarball. Usable in dependencies, particularly for files that don't |
| 42 | +# want to depend on config.h but do want to track version changes. |
| 43 | +# Delete this file prior to any autoconf run where you want to rebuild |
| 44 | +# files to pick up a version string change; and leave it stale to |
| 45 | +# minimize rebuild time after unrelated changes to configure sources. |
| 46 | +# |
| 47 | +# It is probably wise to add these two files to .gitignore, so that you |
| 48 | +# don't accidentally commit either generated file. |
| 49 | +# |
| 50 | +# Use the following line in your configure.ac, so that $(VERSION) will |
| 51 | +# automatically be up-to-date each time configure is run (and note that |
| 52 | +# since configure.ac no longer includes a version string, Makefile rules |
| 53 | +# should not depend on configure.ac for version updates). |
| 54 | +# |
| 55 | +# AC_INIT([GNU project], |
| 56 | +# m4_esyscmd([build-aux/git-version-gen .tarball-version]), |
| 57 | +# [bug-project@example]) |
| 58 | +# |
| 59 | +# Then use the following lines in your Makefile.am, so that .version |
| 60 | +# will be present for dependencies, and so that .tarball-version will |
| 61 | +# exist in distribution tarballs. |
| 62 | +# |
| 63 | +# BUILT_SOURCES = $(top_srcdir)/.version |
| 64 | +# $(top_srcdir)/.version: |
| 65 | +# echo $(VERSION) > $@-t && mv $@-t $@ |
| 66 | +# dist-hook: |
| 67 | +# echo $(VERSION) > $(distdir)/.tarball-version |
| 68 | + |
| 69 | +case $# in |
| 70 | + 1) ;; |
| 71 | + *) echo 1>&2 "Usage: $0 \$srcdir/.tarball-version"; exit 1;; |
| 72 | +esac |
| 73 | + |
| 74 | +tarball_version_file=$1 |
| 75 | +nl=' |
| 76 | +' |
| 77 | + |
| 78 | +# First see if there is a tarball-only version file. |
| 79 | +# then try "git describe", then default. |
| 80 | +if test -f $tarball_version_file |
| 81 | +then |
| 82 | + v=`cat $tarball_version_file` || exit 1 |
| 83 | + case $v in |
| 84 | + *$nl*) v= ;; # reject multi-line output |
| 85 | + [0-9]*) ;; |
| 86 | + *) v= ;; |
| 87 | + esac |
| 88 | + test -z "$v" \ |
| 89 | + && echo "$0: WARNING: $tarball_version_file seems to be damaged" 1>&2 |
| 90 | +fi |
| 91 | + |
| 92 | +if test -n "$v" |
| 93 | +then |
| 94 | + : # use $v |
| 95 | +elif |
| 96 | + v=`git describe --abbrev=4 --match='v*' HEAD 2>/dev/null \ |
| 97 | + || git describe --abbrev=4 HEAD 2>/dev/null` \ |
| 98 | + && case $v in |
| 99 | + [0-9]*) ;; |
| 100 | + v[0-9]*) ;; |
| 101 | + *) (exit 1) ;; |
| 102 | + esac |
| 103 | +then |
| 104 | + # Is this a new git that lists number of commits since the last |
| 105 | + # tag or the previous older version that did not? |
| 106 | + # Newer: v6.10-77-g0f8faeb |
| 107 | + # Older: v6.10-g0f8faeb |
| 108 | + case $v in |
| 109 | + *-*-*) : git describe is okay three part flavor ;; |
| 110 | + *-*) |
| 111 | + : git describe is older two part flavor |
| 112 | + # Recreate the number of commits and rewrite such that the |
| 113 | + # result is the same as if we were using the newer version |
| 114 | + # of git describe. |
| 115 | + vtag=`echo "$v" | sed 's/-.*//'` |
| 116 | + numcommits=`git rev-list "$vtag"..HEAD | wc -l` |
| 117 | + v=`echo "$v" | sed "s/\(.*\)-\(.*\)/\1-$numcommits-\2/"`; |
| 118 | + ;; |
| 119 | + esac |
| 120 | + |
| 121 | + # Change the first '-' to a '.', so version-comparing tools work properly. |
| 122 | + # Remove the "g" in git describe's output string, to save a byte. |
| 123 | + v=`echo "$v" | sed 's/-/./;s/\(.*\)-g/\1-/'`; |
| 124 | +else |
| 125 | + v=UNKNOWN |
| 126 | +fi |
| 127 | + |
| 128 | +v=`echo "$v" |sed 's/^v//'` |
| 129 | + |
| 130 | +# Don't declare a version "dirty" merely because a time stamp has changed. |
| 131 | +git status > /dev/null 2>&1 |
| 132 | + |
| 133 | +dirty=`sh -c 'git diff-index --name-only HEAD' 2>/dev/null` || dirty= |
| 134 | +case "$dirty" in |
| 135 | + '') ;; |
| 136 | + *) # Append the suffix only if there isn't one already. |
| 137 | + case $v in |
| 138 | + *-dirty) ;; |
| 139 | + *) v="$v-dirty" ;; |
| 140 | + esac ;; |
| 141 | +esac |
| 142 | + |
| 143 | +# Omit the trailing newline, so that m4_esyscmd can use the result directly. |
| 144 | +echo "$v" | tr -d '\012' |
| 145 | + |
| 146 | +# Local variables: |
| 147 | +# eval: (add-hook 'write-file-hooks 'time-stamp) |
| 148 | +# time-stamp-start: "scriptversion=" |
| 149 | +# time-stamp-format: "%:y-%02m-%02d.%02H" |
| 150 | +# time-stamp-end: "$" |
| 151 | +# End: |
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