X-Git-Url: http://erislabs.net/gitweb/?a=blobdiff_plain;f=build-aux%2Fgit-version-gen;h=168d81a7aed8a2cdbdd33eac8a16a330bd2828fb;hb=d2b8ab669f3129ac0d349eead1217adc38d795eb;hp=1d58adc725b5d4817101d917750bbed7490975a4;hpb=77b76ce0d1c6af26563467f7dd38bf89a0d57e90;p=gnulib.git diff --git a/build-aux/git-version-gen b/build-aux/git-version-gen index 1d58adc72..168d81a7a 100755 --- a/build-aux/git-version-gen +++ b/build-aux/git-version-gen @@ -1,13 +1,13 @@ #!/bin/sh # Print a version string. -scriptversion=2008-02-08.11 +scriptversion=2011-08-11.12; # UTC -# Copyright (C) 2007 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 @@ -15,78 +15,161 @@ scriptversion=2008-02-08.11 # 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: # - 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 .version file, which +# - 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 + case $# in - 1) ;; - *) echo 1>&2 "Usage: $0 \$srcdir/.version"; exit 1;; + 1|2) ;; + *) echo 1>&2 "Usage: $0 \$srcdir/.tarball-version" \ + '[TAG-NORMALIZATION-SED-SCRIPT]' + exit 1;; esac tarball_version_file=$1 +tag_sed_script="${2:-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` || 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 + && echo "$0: WARNING: $tarball_version_file is missing or damaged" 1>&2 fi if test -n "$v" then : # use $v -elif test -d .git \ - && v=`git describe --abbrev=4 HEAD 2>/dev/null` \ +# Otherwise, if there is at least one git commit involving the working +# directory, and "git describe" output looks sensible, use that to +# derive a version string. +elif test "`git log -1 --pretty=format:x . 2>&1`" = x \ + && v=`git describe --abbrev=4 --match='v*' HEAD 2>/dev/null \ + || git describe --abbrev=4 HEAD 2>/dev/null` \ + && v=`printf '%s\n' "$v" | sed "$tag_sed_script"` \ && case $v in - v[0-9]*) ;; - *) (exit 1) ;; + v[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/-/./;s/\(.*\)-g/\1-/'`; + v_from_git=1 else v=UNKNOWN fi v=`echo "$v" |sed 's/^v//'` -# Don't declare a version "dirty" merely because a time stamp has changed. -git status > /dev/null 2>&1 +# Test whether to append the "-dirty" suffix only if the version +# string we're using came from git. I.e., skip the test if it's "UNKNOWN" +# or if it came from .tarball-version. +if test -n "$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: