diff --git a/git-version-gen b/git-version-gen index 9d65b80..c7a58af 100755 --- a/git-version-gen +++ b/git-version-gen @@ -1,13 +1,13 @@ #!/bin/sh # Print a version string. -scriptversion=2012-09-25.20 +scriptversion=2011-11-13.13; # UTC -# Copyright (C) 2007-2008 Free Software Foundation +# Copyright (C) 2007-2011 Free Software Foundation, Inc. # -# This program is free software; you can redistribute it and/or modify +# 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, or (at your option) -# any later version. +# 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 @@ -15,9 +15,7 @@ scriptversion=2012-09-25.20 # 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, write to the Free Software -# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA -# 02110-1301, USA. +# along with this program. If not, see . # This script is derived from GIT-VERSION-GEN from GIT: http://git.or.cz/. # It may be run two ways: @@ -46,8 +44,10 @@ scriptversion=2012-09-25.20 # files to pick up a version string change; and leave it stale to # minimize rebuild time after unrelated changes to configure sources. # -# It is probably wise to add these two files to .gitignore, so that you -# don't accidentally commit either generated file. +# 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 @@ -59,114 +59,161 @@ scriptversion=2012-09-25.20 # [bug-project@example]) # # Then use the following lines in your Makefile.am, so that .version -# will be present for dependencies, and so that .tarball-version will -# exist in distribution tarballs. +# 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 -# echo $(VERSION) > $(distdir)/.version -case $# in - 1) ;; - *) echo 1>&2 "Usage: $0 \$srcdir/.tarball-version"; exit 1;; -esac -tarball_version_file=$1 +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') + + --help display this help and exit + --version output version information and exit + +Running without arguments will suffice in most cases." + +while test $# -gt 0; do + case $1 in + --help) echo "$usage"; exit 0;; + --version) echo "$version"; exit 0;; + --prefix) shift; prefix="$1";; + -*) + echo "$0: Unknown option \`$1'." >&2 + echo "$0: Try \`--help' for more information." >&2 + exit 1;; + *) + if test -z "$tarball_version_file"; then + tarball_version_file="$1" + elif test -z "$tag_sed_script"; then + tag_sed_script="$1" + else + echo "$0: extra non-option argument \`$1'." >&2 + exit 1 + fi;; + esac + shift +done + +if test -z "$tarball_version_file"; then + echo "$usage" + exit 1 +fi + +tag_sed_script="${tag_sed_script:-s/x/x/}" +prefix="${prefix:-v}" + 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` || exit 1 + v=`cat $tarball_version_file` || v= case $v in - *$nl*) v= ;; # reject multi-line output - [0-9]*) ;; - *) v= ;; + *$nl*) v= ;; # reject multi-line output + [0-9]*) ;; + *) v= ;; esac test -z "$v" \ - && echo "$0: WARNING: $tarball_version_file seems to be damaged" 1>&2 -fi - -# This is presently used by the GNOME-OSTree build system; it -# helps support the case where the meta-build system has already -# determined the git revision, but we may not be able to run "git describe" -# because we're inside a chroot. -if test -n "$GIT_DESCRIBE_FOR_BUILD"; -then - v=$GIT_DESCRIBE_FOR_BUILD + && echo "$0: WARNING: $tarball_version_file is missing or damaged" 1>&2 fi if test -n "$v" then : # use $v -elif test -d .git \ - && v=`git describe --abbrev=4 --match='v[0-9]*' HEAD 2>/dev/null` \ - && [ -n "$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 - # If we are on a "dev" tag, we need to check that it is not the same - # reference as the a previous version tag (this only happens when we are - # working with a release tag). - # NB The below trick relies on the $v being an exact tag to work which - # will only work when HEAD == tag. When further commits have been made on top - # of the tag, the $v will be supplimented with the number of commits since - # that tag and the commit ref of the most recent commit and thus will - # fail the test below (as intended) - v2=`git describe --abbrev=4 --match='v[0-9]\.[0-9]' --contains $v 2>/dev/null | cut -d'^' -f1` - [ -n "$v2" ] && v=$v2 - # 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/-.*//'` -# numcommits=`git rev-list "$vtag"..HEAD | wc -l` -# v=`echo "$v" | sed "s/\(.*\)-\(.*\)/\1-$numcommits-\2/"`; -# ;; -# esac + 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/-/./;s/\(.*\)-g/\1-/'`; - : + v=`echo "$v" | sed 's/-/./;s/\(.*\)-g/\1-/'`; + v_from_git=1 else - echo 1>&2 "$0: Failed to determine git revision" - exit 1 + v=UNKNOWN fi -v=`echo "$v" |sed 's/^v//'` +v=`echo "$v" |sed "s/^$prefix//"` -# Don't declare a version "dirty" merely because a time stamp has changed. -git status > /dev/null 2>&1 +# 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 -n "$v_from_git"; then + # Don't declare a version "dirty" merely because a time stamp has changed. + git update-index --refresh > /dev/null 2>&1 -dirty=`sh -c 'git diff-index --name-only HEAD' 2>/dev/null` || dirty= -case "$dirty" in - '') ;; - *) # Append the suffix only if there isn't one already. - case $v in - *-dirty) ;; - *) v="$v-dirty" ;; - esac ;; -esac + 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 "$v" | tr -d '\012' +echo "$v" | tr -d "$nl" # Local variables: # eval: (add-hook 'write-file-hooks 'time-stamp) # time-stamp-start: "scriptversion=" # time-stamp-format: "%:y-%02m-%02d.%02H" -# time-stamp-end: "$" +# time-stamp-time-zone: "UTC" +# time-stamp-end: "; # UTC" # End: