1#!/bin/sh 2# Print a version string. 3scriptversion=2012-09-25.20 4 5# Copyright (C) 2007-2008 Free Software Foundation 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, or (at your option) 10# 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# echo $(VERSION) > $(distdir)/.version 69 70case $# in 71 1) ;; 72 *) echo 1>&2 "Usage: $0 \$srcdir/.tarball-version"; exit 1;; 73esac 74 75tarball_version_file=$1 76nl=' 77' 78v= 79 80# First see if there is a tarball-only version file. 81# then try "git describe", then default. 82if test -f $tarball_version_file 83then 84 v=`cat $tarball_version_file` || exit 1 85 case $v in 86 *$nl*) v= ;; # reject multi-line output 87 [0-9]*) 88 echo "$v" | tr -d '\012' 89 exit 0 90 ;; 91 *) v= ;; 92 esac 93 test -z "$v" \ 94 && echo "$0: WARNING: $tarball_version_file seems to be damaged" 1>&2 95fi 96 97# This is presently used by the GNOME-OSTree build system; it 98# helps support the case where the meta-build system has already 99# determined the git revision, but we may not be able to run "git describe" 100# because we're inside a chroot. 101if test -n "$GIT_DESCRIBE_FOR_BUILD"; 102then 103 v=$GIT_DESCRIBE_FOR_BUILD 104fi 105 106if test -n "$v" 107then 108 : # use $v 109elif test -e .git \ 110 && v=`git describe --abbrev=4 --match='v[0-9]*' HEAD 2>/dev/null` \ 111 && [ -n "$v" ] 112then 113 # If we are on a "dev" tag, we need to check that it is not the same 114 # reference as the a previous version tag (this only happens when we are 115 # working with a release tag). 116 # NB The below trick relies on the $v being an exact tag to work which 117 # will only work when HEAD == tag. When further commits have been made on top 118 # of the tag, the $v will be supplimented with the number of commits since 119 # that tag and the commit ref of the most recent commit and thus will 120 # fail the test below (as intended) 121 v2=`git describe --abbrev=4 --match='v[0-9]\.[0-9]' --contains $v 2>/dev/null | cut -d'^' -f1` 122 [ -n "$v2" ] && v=$v2 123 124 # Is this a new git that lists number of commits since the last 125 # tag or the previous older version that did not? 126 # Newer: v6.10-77-g0f8faeb 127 # Older: v6.10-g0f8faeb 128# case $v in 129# *-*-*) : git describe is okay three part flavor ;; 130# *-*) 131# : git describe is older two part flavor 132# # Recreate the number of commits and rewrite such that the 133# # result is the same as if we were using the newer version 134# # of git describe. 135# vtag=`echo "$v" | sed 's/-.*//'` 136# numcommits=`git rev-list "$vtag"..HEAD | wc -l` 137# v=`echo "$v" | sed "s/\(.*\)-\(.*\)/\1-$numcommits-\2/"`; 138# ;; 139# esac 140 141 # Change the first '-' to a '.', so version-comparing tools work properly. 142 # Remove the "g" in git describe's output string, to save a byte. 143# v=`echo "$v" | sed 's/-/./;s/\(.*\)-g/\1-/'`; 144 : 145else 146 echo 1>&2 "$0: Failed to determine git revision" 147 exit 1 148fi 149 150v=`echo "$v" |sed 's/^v//'` 151 152# Don't declare a version "dirty" merely because a time stamp has changed. 153git status > /dev/null 2>&1 154 155dirty=`sh -c 'git diff-index --name-only HEAD' 2>/dev/null` || dirty= 156case "$dirty" in 157 '') ;; 158 *) # Append the suffix only if there isn't one already. 159 case $v in 160 *-dirty) ;; 161 *) v="$v-dirty" ;; 162 esac ;; 163esac 164 165# Omit the trailing newline, so that m4_esyscmd can use the result directly. 166echo "$v" | tr -d '\012' 167 168# Local variables: 169# eval: (add-hook 'write-file-hooks 'time-stamp) 170# time-stamp-start: "scriptversion=" 171# time-stamp-format: "%:y-%02m-%02d.%02H" 172# time-stamp-end: "$" 173# End: 174