annotate build-aux/get-source-mtime.sh @ 33584:3fe954c2fd25 default tip @

maint: merge stable to default
author Rik <rik@octave.org>
date Mon, 13 May 2024 11:41:11 -0700
parents 2e484f9f1f18
children
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1 #! /bin/sh
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2
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3 ########################################################################
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4 ##
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5 ## Copyright (C) 2017-2024 The Octave Project Developers
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6 ##
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7 ## See the file COPYRIGHT.md in the top-level directory of this
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8 ## distribution or <https://octave.org/copyright/>.
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9 ##
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10 ## This file is part of Octave.
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11 ##
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12 ## Octave is free software: you can redistribute it and/or modify it
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13 ## under the terms of the GNU General Public License as published by
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14 ## the Free Software Foundation, either version 3 of the License, or
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15 ## (at your option) any later version.
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16 ##
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17 ## Octave is distributed in the hope that it will be useful, but
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18 ## WITHOUT ANY WARRANTY; without even the implied warranty of
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19 ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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20 ## GNU General Public License for more details.
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21 ##
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22 ## You should have received a copy of the GNU General Public License
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23 ## along with Octave; see the file COPYING. If not, see
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24 ## <https://www.gnu.org/licenses/>.
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25 ##
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26 ########################################################################
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27
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28 # Generate a timestamp that best represents the last modification time
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29 # of this source tree. The time value is printed on stdout in units of
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30 # time_t. If a reasonable representation of the source tree last
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31 # modification time can't be determined, then the current system time is
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32 # printed instead. A valid time_t value is always printed on stdout.
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33
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34 set -e
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35
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36 PERL=${PERL:-perl}
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37 SED=${SED:-sed}
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38
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39 if [ $# -ne 1 ]; then
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40 echo "usage: get-source-mtime.sh SRCDIR" 1>&2
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41 exit 1
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42 fi
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43
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44 srcdir="$1"
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45
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46 ## A user's ~/.hgrc may redefine or add default options to any hg subcommand,
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47 ## potentially altering its behavior and possibly its standard output. Always
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48 ## run hg subcommands with configuration variables set to ensure that the
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49 ## user's preferences do not influence the expected behavior.
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50 hg_safe ()
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51 {
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52 cmd=$1; shift
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53 hg --config alias.${cmd}=${cmd} --config defaults.${cmd}= ${cmd} "$@"
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54 }
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55
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56 if [ x"$SOURCE_DATE_EPOCH" != x ]; then
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57 # Allow the source modification time to be overridden by SOURCE_DATE_EPOCH
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58 t=$SOURCE_DATE_EPOCH
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59 elif [ -d $srcdir/.hg ]; then
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60 t=$( cd $srcdir && hg_safe log --rev . --template '{date|hgdate}' )
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61 t=$( echo $t | $SED -n 's/^\([0-9]\+\) .*/\1/p' )
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62 elif [ -f $srcdir/HG-ID ]; then
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63 t=$( $PERL -e '@s = stat($ARGV[0]); print($s[9]) if @s;' $srcdir/HG-ID )
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64 elif [ -f $srcdir/configure ]; then
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65 t=$( $PERL -e '@s = stat($ARGV[0]); print($s[9]) if @s;' $srcdir/configure )
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66 fi
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67
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68 if [ x"$t" = x ]; then
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69 t=$( date +%s )
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70 fi
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71
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72 echo $t