annotate build-aux/git-version-gen @ 11986:ff87a690cd47

Fix copyright header in build-aux scripts. * build-aux/git-version-gen: Fix copyright header to match GPLv3 recommendation. * build-aux/ncftpput-ftp: Likewise. * build-aux/update-copyright: Likewise. Signed-off-by: Ralf Wildenhues <Ralf.Wildenhues@gmx.de>
author Ralf Wildenhues <Ralf.Wildenhues@gmx.de>
date Thu, 10 Sep 2009 19:57:57 +0200
parents f7b424277771
children 442a82a053da
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 #!/bin/sh
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2 # Print a version string.
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3 scriptversion=2009-09-09.22
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4
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5 # Copyright (C) 2007-2009 Free Software Foundation
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6 #
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7 # This program is free software: you can redistribute it and/or modify
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8 # it under the terms of the GNU General Public License as published by
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9 # the Free Software Foundation; either version 3 of the License, or
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10 # (at your option) any later version.
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11 #
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12 # This program is distributed in the hope that it will be useful,
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13 # but WITHOUT ANY WARRANTY; without even the implied warranty of
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14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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15 # GNU General Public License for more details.
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16 #
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17 # You should have received a copy of the GNU General Public License
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18 # along with this program. If not, see <http://www.gnu.org/licenses/>.
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19
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20 # This script is derived from GIT-VERSION-GEN from GIT: http://git.or.cz/.
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21 # It may be run two ways:
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22 # - from a git repository in which the "git describe" command below
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23 # produces useful output (thus requiring at least one signed tag)
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24 # - from a non-git-repo directory containing a .tarball-version file, which
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25 # presumes this script is invoked like "./git-version-gen .tarball-version".
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26
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27 # In order to use intra-version strings in your project, you will need two
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28 # separate generated version string files:
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29 #
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30 # .tarball-version - present only in a distribution tarball, and not in
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31 # a checked-out repository. Created with contents that were learned at
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32 # the last time autoconf was run, and used by git-version-gen. Must not
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33 # be present in either $(srcdir) or $(builddir) for git-version-gen to
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34 # give accurate answers during normal development with a checked out tree,
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35 # but must be present in a tarball when there is no version control system.
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36 # Therefore, it cannot be used in any dependencies. GNUmakefile has
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37 # hooks to force a reconfigure at distribution time to get the value
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38 # correct, without penalizing normal development with extra reconfigures.
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39 #
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40 # .version - present in a checked-out repository and in a distribution
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41 # tarball. Usable in dependencies, particularly for files that don't
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42 # want to depend on config.h but do want to track version changes.
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43 # Delete this file prior to any autoconf run where you want to rebuild
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44 # files to pick up a version string change; and leave it stale to
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45 # minimize rebuild time after unrelated changes to configure sources.
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46 #
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47 # It is probably wise to add these two files to .gitignore, so that you
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48 # don't accidentally commit either generated file.
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49 #
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50 # Use the following line in your configure.ac, so that $(VERSION) will
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51 # automatically be up-to-date each time configure is run (and note that
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52 # since configure.ac no longer includes a version string, Makefile rules
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53 # should not depend on configure.ac for version updates).
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54 #
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55 # AC_INIT([GNU project],
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56 # m4_esyscmd([build-aux/git-version-gen .tarball-version]),
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57 # [bug-project@example])
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58 #
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59 # Then use the following lines in your Makefile.am, so that .version
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60 # will be present for dependencies, and so that .tarball-version will
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61 # exist in distribution tarballs.
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62 #
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63 # BUILT_SOURCES = $(top_srcdir)/.version
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64 # $(top_srcdir)/.version:
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65 # echo $(VERSION) > $@-t && mv $@-t $@
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66 # dist-hook:
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67 # echo $(VERSION) > $(distdir)/.tarball-version
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68
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69 case $# in
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70 1) ;;
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71 *) echo 1>&2 "Usage: $0 \$srcdir/.tarball-version"; exit 1;;
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72 esac
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73
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74 tarball_version_file=$1
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75 nl='
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76 '
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77
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78 # First see if there is a tarball-only version file.
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79 # then try "git describe", then default.
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80 if test -f $tarball_version_file
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81 then
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82 v=`cat $tarball_version_file` || exit 1
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83 case $v in
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84 *$nl*) v= ;; # reject multi-line output
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85 [0-9]*) ;;
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86 *) v= ;;
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87 esac
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88 test -z "$v" \
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89 && echo "$0: WARNING: $tarball_version_file seems to be damaged" 1>&2
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90 fi
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91
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92 if test -n "$v"
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93 then
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94 : # use $v
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95 elif test -d .git \
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96 && v=`git describe --abbrev=4 --match='v*' HEAD 2>/dev/null \
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97 || git describe --abbrev=4 HEAD 2>/dev/null` \
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98 && case $v in
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99 v[0-9]*) ;;
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100 *) (exit 1) ;;
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101 esac
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102 then
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103 # Is this a new git that lists number of commits since the last
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104 # tag or the previous older version that did not?
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105 # Newer: v6.10-77-g0f8faeb
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106 # Older: v6.10-g0f8faeb
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107 case $v in
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108 *-*-*) : git describe is okay three part flavor ;;
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109 *-*)
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110 : git describe is older two part flavor
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111 # Recreate the number of commits and rewrite such that the
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112 # result is the same as if we were using the newer version
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113 # of git describe.
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114 vtag=`echo "$v" | sed 's/-.*//'`
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115 numcommits=`git rev-list "$vtag"..HEAD | wc -l`
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116 v=`echo "$v" | sed "s/\(.*\)-\(.*\)/\1-$numcommits-\2/"`;
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117 ;;
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118 esac
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119
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120 # Change the first '-' to a '.', so version-comparing tools work properly.
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121 # Remove the "g" in git describe's output string, to save a byte.
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122 v=`echo "$v" | sed 's/-/./;s/\(.*\)-g/\1-/'`;
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123 else
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124 v=UNKNOWN
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125 fi
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126
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127 v=`echo "$v" |sed 's/^v//'`
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128
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129 # Don't declare a version "dirty" merely because a time stamp has changed.
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130 git status > /dev/null 2>&1
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131
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132 dirty=`sh -c 'git diff-index --name-only HEAD' 2>/dev/null` || dirty=
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133 case "$dirty" in
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134 '') ;;
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135 *) # Append the suffix only if there isn't one already.
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136 case $v in
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137 *-dirty) ;;
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138 *) v="$v-dirty" ;;
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139 esac ;;
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140 esac
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141
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142 # Omit the trailing newline, so that m4_esyscmd can use the result directly.
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143 echo "$v" | tr -d '\012'
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144
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145 # Local variables:
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146 # eval: (add-hook 'write-file-hooks 'time-stamp)
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147 # time-stamp-start: "scriptversion="
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148 # time-stamp-format: "%:y-%02m-%02d.%02H"
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149 # time-stamp-end: "$"
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150 # End: