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#!/bin/sh |
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# Print a version string. |
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scriptversion=2010-01-28.01 |
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# Copyright (C) 2007-2010 Free Software Foundation, Inc. |
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# |
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# This program is free software: you can redistribute it and/or modify |
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# it under the terms of the GNU General Public License as published by |
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# the Free Software Foundation; either version 3 of the License, or |
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# (at your option) any later version. |
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# |
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# This program is distributed in the hope that it will be useful, |
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# but WITHOUT ANY WARRANTY; without even the implied warranty of |
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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# GNU General Public License for more details. |
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# |
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# You should have received a copy of the GNU General Public License |
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# along with this program. If not, see <http://www.gnu.org/licenses/>. |
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|
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# This script is derived from GIT-VERSION-GEN from GIT: http://git.or.cz/. |
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# It may be run two ways: |
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# - from a git repository in which the "git describe" command below |
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# produces useful output (thus requiring at least one signed tag) |
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# - from a non-git-repo directory containing a .tarball-version file, which |
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# presumes this script is invoked like "./git-version-gen .tarball-version". |
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|
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# In order to use intra-version strings in your project, you will need two |
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# separate generated version string files: |
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# |
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# .tarball-version - present only in a distribution tarball, and not in |
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# a checked-out repository. Created with contents that were learned at |
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# the last time autoconf was run, and used by git-version-gen. Must not |
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# be present in either $(srcdir) or $(builddir) for git-version-gen to |
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# give accurate answers during normal development with a checked out tree, |
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# but must be present in a tarball when there is no version control system. |
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# Therefore, it cannot be used in any dependencies. GNUmakefile has |
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# hooks to force a reconfigure at distribution time to get the value |
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# correct, without penalizing normal development with extra reconfigures. |
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# |
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# .version - present in a checked-out repository and in a distribution |
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# tarball. Usable in dependencies, particularly for files that don't |
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# want to depend on config.h but do want to track version changes. |
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# Delete this file prior to any autoconf run where you want to rebuild |
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# files to pick up a version string change; and leave it stale to |
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# minimize rebuild time after unrelated changes to configure sources. |
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# |
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# It is probably wise to add these two files to .gitignore, so that you |
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# don't accidentally commit either generated file. |
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# |
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# Use the following line in your configure.ac, so that $(VERSION) will |
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# automatically be up-to-date each time configure is run (and note that |
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# since configure.ac no longer includes a version string, Makefile rules |
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# should not depend on configure.ac for version updates). |
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# |
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# AC_INIT([GNU project], |
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# m4_esyscmd([build-aux/git-version-gen .tarball-version]), |
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# [bug-project@example]) |
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# |
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# Then use the following lines in your Makefile.am, so that .version |
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# will be present for dependencies, and so that .tarball-version will |
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# exist in distribution tarballs. |
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# |
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# BUILT_SOURCES = $(top_srcdir)/.version |
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# $(top_srcdir)/.version: |
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# echo $(VERSION) > $@-t && mv $@-t $@ |
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# dist-hook: |
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# echo $(VERSION) > $(distdir)/.tarball-version |
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|
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case $# in |
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1) ;; |
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*) echo 1>&2 "Usage: $0 \$srcdir/.tarball-version"; exit 1;; |
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esac |
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tarball_version_file=$1 |
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nl=' |
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' |
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|
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# First see if there is a tarball-only version file. |
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# then try "git describe", then default. |
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if test -f $tarball_version_file |
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then |
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v=`cat $tarball_version_file` || exit 1 |
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case $v in |
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*$nl*) v= ;; # reject multi-line output |
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[0-9]*) ;; |
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*) v= ;; |
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esac |
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test -z "$v" \ |
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&& echo "$0: WARNING: $tarball_version_file seems to be damaged" 1>&2 |
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fi |
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|
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if test -n "$v" |
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then |
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: # use $v |
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elif |
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v=`git describe --abbrev=4 --match='v*' HEAD 2>/dev/null \ |
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|| git describe --abbrev=4 HEAD 2>/dev/null` \ |
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&& case $v in |
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[0-9]*) ;; |
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v[0-9]*) ;; |
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*) (exit 1) ;; |
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esac |
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then |
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# Is this a new git that lists number of commits since the last |
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# tag or the previous older version that did not? |
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# Newer: v6.10-77-g0f8faeb |
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# Older: v6.10-g0f8faeb |
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case $v in |
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*-*-*) : git describe is okay three part flavor ;; |
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*-*) |
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: git describe is older two part flavor |
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# Recreate the number of commits and rewrite such that the |
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# result is the same as if we were using the newer version |
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# of git describe. |
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vtag=`echo "$v" | sed 's/-.*//'` |
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numcommits=`git rev-list "$vtag"..HEAD | wc -l` |
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v=`echo "$v" | sed "s/\(.*\)-\(.*\)/\1-$numcommits-\2/"`; |
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;; |
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esac |
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|
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# Change the first '-' to a '.', so version-comparing tools work properly. |
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# Remove the "g" in git describe's output string, to save a byte. |
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v=`echo "$v" | sed 's/-/./;s/\(.*\)-g/\1-/'`; |
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else |
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v=UNKNOWN |
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fi |
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v=`echo "$v" |sed 's/^v//'` |
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# Don't declare a version "dirty" merely because a time stamp has changed. |
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git status > /dev/null 2>&1 |
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dirty=`sh -c 'git diff-index --name-only HEAD' 2>/dev/null` || dirty= |
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case "$dirty" in |
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'') ;; |
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*) # Append the suffix only if there isn't one already. |
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case $v in |
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*-dirty) ;; |
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*) v="$v-dirty" ;; |
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esac ;; |
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esac |
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|
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# Omit the trailing newline, so that m4_esyscmd can use the result directly. |
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echo "$v" | tr -d '\012' |
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# Local variables: |
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# eval: (add-hook 'write-file-hooks 'time-stamp) |
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# time-stamp-start: "scriptversion=" |
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# time-stamp-format: "%:y-%02m-%02d.%02H" |
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# time-stamp-end: "$" |
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# End: |
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