#! /bin/sh
# Install an aclocal-style M4 file. A script is needed to do this
# because we want to do serial-number checking; newer versions of
# macro files should always be preferred.
# Usage:
# acinstall file directory installprogram [install-args]...
# Copyright 1996 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 2, 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 <http://www.gnu.org/licenses/>.
file="$1"
dir="$2"
shift
shift
localserial=`grep '^# serial ' $file | sed -e 's/^# serial \([0-9][0-9]*\).*$/\1/; q'`
if test -z "$localserial"; then
echo "acinstall: no serial number in $file" 1>&2
exit 1
fi
# Maybe if the installed file has no serial number we should just
# assume it is ancient.
instserial=`grep '^# serial ' $dir/$file | sed -e 's/^# serial \([0-9][0-9]*\).*$/\1/; q'`
if test -z "$instserial"; then
echo "acinstall: no serial number in $dir/$file" 1>&2
exit 1
fi
if test $localserial -lt $instserial; then
# Installed file is newer.
exit 0
fi
# Install the file.
$* $file $dir/$file
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