#!/bin/sh # Print a version string. scriptversion=2022-07-09.08; # UTC # Copyright (C) 2007-2022 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 . # This script is derived from GIT-VERSION-GEN from GIT: https://git-scm.com/. # 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=$0 year=`expr "$scriptversion" : '\([^-]*\)'` version="git-version-gen $scriptversion Copyright (C) ${year} Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later . This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law." usage="\ Usage: $me [OPTION]... \$srcdir/.tarball-version [TAG-NORMALIZATION-SED-SCRIPT] Print a version string. Options: --prefix PREFIX prefix of git tags (default 'v') --fallback VERSION fallback version to use if \"git --version\" fails --help display this help and exit --version output version information and exit Send patches and bug reports to ." 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 esac test "x$v" = x \ && echo "$0: WARNING: $tarball_version_file is damaged" 1>&2 fi if test "x$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 $prefix[0-9]*) ;; *) (exit 1) ;; esac then # Is this a new git that lists number of commits since the last # tag or the previous older version that did not? # Newer: v6.10-77-g0f8faeb # Older: v6.10-g0f8faeb vprefix=`expr "X$v" : 'X\(.*\)-g[^-]*$'` || vprefix=$v case $vprefix in *-*) : git describe is probably okay three part flavor ;; *) : git describe is older two part flavor # Recreate the number of commits and rewrite such that the # result is the same as if we were using the newer version # of git describe. vtag=`echo "$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 penultimate "-" to ".", for version-comparing tools. # Remove the "g" to save a byte. v=`echo "$v" | sed 's/-\([^-]*\)-g\([^-]*\)$/.\1-\2/'`; v_from_git=1 elif test "x$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 timestamp 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. printf %s "$v" # Local variables: # eval: (add-hook 'before-save-hook 'time-stamp) # time-stamp-start: "scriptversion=" # time-stamp-format: "%:y-%02m-%02d.%02H" # time-stamp-time-zone: "UTC0" # time-stamp-end: "; # UTC" # End: