| #!/bin/sh |
| # Print a version string. |
| scriptversion=2012-12-31.23; # UTC |
| |
| # Copyright (C) 2007-2013 Free Software Foundation, Inc. |
| # |
| # This program is free software: you can redistribute it and/or modify |
| # it under the terms of the GNU General Public License as published by |
| # the Free Software Foundation; either version 3 of the License, or |
| # (at your option) any later version. |
| # |
| # This program is distributed in the hope that it will be useful, |
| # but WITHOUT ANY WARRANTY; without even the implied warranty of |
| # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| # GNU General Public License for more details. |
| # |
| # You should have received a copy of the GNU General Public License |
| # along with this program. If not, see <http://www.gnu.org/licenses/>. |
| |
| # This script is derived from GIT-VERSION-GEN from GIT: http://git.or.cz/. |
| # It may be run two ways: |
| # - from a git repository in which the "git describe" command below |
| # produces useful output (thus requiring at least one signed tag) |
| # - from a non-git-repo directory containing a .tarball-version file, which |
| # presumes this script is invoked like "./git-version-gen .tarball-version". |
| |
| # In order to use intra-version strings in your project, you will need two |
| # separate generated version string files: |
| # |
| # .tarball-version - present only in a distribution tarball, and not in |
| # a checked-out repository. Created with contents that were learned at |
| # the last time autoconf was run, and used by git-version-gen. Must not |
| # be present in either $(srcdir) or $(builddir) for git-version-gen to |
| # give accurate answers during normal development with a checked out tree, |
| # but must be present in a tarball when there is no version control system. |
| # Therefore, it cannot be used in any dependencies. GNUmakefile has |
| # hooks to force a reconfigure at distribution time to get the value |
| # correct, without penalizing normal development with extra reconfigures. |
| # |
| # .version - present in a checked-out repository and in a distribution |
| # tarball. Usable in dependencies, particularly for files that don't |
| # want to depend on config.h but do want to track version changes. |
| # Delete this file prior to any autoconf run where you want to rebuild |
| # files to pick up a version string change; and leave it stale to |
| # minimize rebuild time after unrelated changes to configure sources. |
| # |
| # As with any generated file in a VC'd directory, you should add |
| # /.version to .gitignore, so that you don't accidentally commit it. |
| # .tarball-version is never generated in a VC'd directory, so needn't |
| # be listed there. |
| # |
| # Use the following line in your configure.ac, so that $(VERSION) will |
| # automatically be up-to-date each time configure is run (and note that |
| # since configure.ac no longer includes a version string, Makefile rules |
| # should not depend on configure.ac for version updates). |
| # |
| # AC_INIT([GNU project], |
| # m4_esyscmd([build-aux/git-version-gen .tarball-version]), |
| # [bug-project@example]) |
| # |
| # Then use the following lines in your Makefile.am, so that .version |
| # will be present for dependencies, and so that .version and |
| # .tarball-version will exist in distribution tarballs. |
| # |
| # EXTRA_DIST = $(top_srcdir)/.version |
| # BUILT_SOURCES = $(top_srcdir)/.version |
| # $(top_srcdir)/.version: |
| # echo $(VERSION) > $@-t && mv $@-t $@ |
| # dist-hook: |
| # echo $(VERSION) > $(distdir)/.tarball-version |
| |
| |
| me=$0 |
| |
| version="git-version-gen $scriptversion |
| |
| Copyright 2011 Free Software Foundation, Inc. |
| There is NO warranty. You may redistribute this software |
| under the terms of the GNU General Public License. |
| For more information about these matters, see the files named COPYING." |
| |
| usage="\ |
| Usage: $me [OPTION]... \$srcdir/.tarball-version [TAG-NORMALIZATION-SED-SCRIPT] |
| Print a version string. |
| |
| Options: |
| |
| --prefix prefix of git tags (default 'v') |
| --fallback fallback version to use if \"git --version\" fails |
| |
| --help display this help and exit |
| --version output version information and exit |
| |
| Running without arguments will suffice in most cases." |
| |
| prefix=v |
| fallback= |
| |
| while test $# -gt 0; do |
| case $1 in |
| --help) echo "$usage"; exit 0;; |
| --version) echo "$version"; exit 0;; |
| --prefix) shift; prefix="$1";; |
| --fallback) shift; fallback="$1";; |
| -*) |
| echo "$0: Unknown option '$1'." >&2 |
| echo "$0: Try '--help' for more information." >&2 |
| exit 1;; |
| *) |
| if test "x$tarball_version_file" = x; then |
| tarball_version_file="$1" |
| elif test "x$tag_sed_script" = x; then |
| tag_sed_script="$1" |
| else |
| echo "$0: extra non-option argument '$1'." >&2 |
| exit 1 |
| fi;; |
| esac |
| shift |
| done |
| |
| if test "x$tarball_version_file" = x; then |
| echo "$usage" |
| exit 1 |
| fi |
| |
| tag_sed_script="${tag_sed_script:-s/x/x/}" |
| |
| nl=' |
| ' |
| |
| # Avoid meddling by environment variable of the same name. |
| v= |
| v_from_git= |
| |
| # First see if there is a tarball-only version file. |
| # then try "git describe", then default. |
| if test -f $tarball_version_file |
| then |
| v=`cat $tarball_version_file` || v= |
| case $v in |
| *$nl*) v= ;; # reject multi-line output |
| [0-9]*) ;; |
| *) v= ;; |
| esac |
| test "x$v" = x \ |
| && echo "$0: WARNING: $tarball_version_file is missing or damaged" 1>&2 |
| fi |
| |
| if test "x$v" != x |
| then |
| : # use $v |
| # Otherwise, if there is at least one git commit involving the working |
| # directory, and "git describe" output looks sensible, use that to |
| # derive a version string. |
| elif test "`git log -1 --pretty=format:x . 2>&1`" = x \ |
| && v=`git describe --abbrev=4 --match="$prefix*" HEAD 2>/dev/null \ |
| || git describe --abbrev=4 HEAD 2>/dev/null` \ |
| && v=`printf '%s\n' "$v" | sed "$tag_sed_script"` \ |
| && case $v in |
| $prefix[0-9]*) ;; |
| *) (exit 1) ;; |
| esac |
| then |
| # Is this a new git that lists number of commits since the last |
| # tag or the previous older version that did not? |
| # Newer: v6.10-77-g0f8faeb |
| # Older: v6.10-g0f8faeb |
| case $v in |
| *-*-*) : git describe is okay three part flavor ;; |
| *-*) |
| : git describe is older two part flavor |
| # Recreate the number of commits and rewrite such that the |
| # result is the same as if we were using the newer version |
| # of git describe. |
| vtag=`echo "$v" | sed 's/-.*//'` |
| commit_list=`git rev-list "$vtag"..HEAD 2>/dev/null` \ |
| || { commit_list=failed; |
| echo "$0: WARNING: git rev-list failed" 1>&2; } |
| numcommits=`echo "$commit_list" | wc -l` |
| v=`echo "$v" | sed "s/\(.*\)-\(.*\)/\1-$numcommits-\2/"`; |
| test "$commit_list" = failed && v=UNKNOWN |
| ;; |
| esac |
| |
| # Change the first '-' to a '.', so version-comparing tools work properly. |
| # Remove the "g" in git describe's output string, to save a byte. |
| v=`echo "$v" | sed 's/-/.0./;s/\(.*\)-g/\1-/'`; |
| v_from_git=1 |
| elif test "x$fallback" = x || git --version >/dev/null 2>&1; then |
| v=UNKNOWN |
| else |
| v=$fallback |
| fi |
| |
| v=`echo "$v" |sed "s/^$prefix//"` |
| |
| # Test whether to append the "-dirty" suffix only if the version |
| # string we're using came from git. I.e., skip the test if it's "UNKNOWN" |
| # or if it came from .tarball-version. |
| if test "x$v_from_git" != x; then |
| # Don't declare a version "dirty" merely because a time stamp has changed. |
| git update-index --refresh > /dev/null 2>&1 |
| |
| dirty=`exec 2>/dev/null;git diff-index --name-only HEAD` || dirty= |
| case "$dirty" in |
| '') ;; |
| *) # Append the suffix only if there isn't one already. |
| case $v in |
| *-dirty) ;; |
| *) v="$v-dirty" ;; |
| esac ;; |
| esac |
| fi |
| |
| # Omit the trailing newline, so that m4_esyscmd can use the result directly. |
| echo "$v" | tr -d "$nl" |
| |
| # Local variables: |
| # eval: (add-hook 'write-file-hooks 'time-stamp) |
| # time-stamp-start: "scriptversion=" |
| # time-stamp-format: "%:y-%02m-%02d.%02H" |
| # time-stamp-time-zone: "UTC" |
| # time-stamp-end: "; # UTC" |
| # End: |