lib/acinstall

   1 #! /bin/sh
   2
   3 # Install an aclocal-style M4 file.  A script is needed to do this
   4 # because we want to do serial-number checking; newer versions of
   5 # macro files should always be preferred.
   6
   7 # Usage:
   8 #  acinstall file directory installprogram [install-args]...
   9
  10 # Copyright 1996 Free Software Foundation, Inc.
  11
  12 # This program is free software; you can redistribute it and/or modify
  13 # it under the terms of the GNU General Public License as published by
  14 # the Free Software Foundation; either version 2, or (at your option)
  15 # any later version.
  16
  17 # This program is distributed in the hope that it will be useful,
  18 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  19 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  20 # GNU General Public License for more details.
  21
  22 # You should have received a copy of the GNU General Public License
  23 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
  24
  25 file="$1"
  26 dir="$2"
  27 shift
  28 shift
  29
  30 localserial=`grep '^# serial ' $file | sed -e 's/^# serial \([0-9][0-9]*\).*$/\1/; q'`
  31 if test -z "$localserial"; then
  32    echo "acinstall: no serial number in $file" 1>&2
  33    exit 1
  34 fi
  35
  36 # Maybe if the installed file has no serial number we should just
  37 # assume it is ancient.
  38 instserial=`grep '^# serial ' $dir/$file | sed -e 's/^# serial \([0-9][0-9]*\).*$/\1/; q'`
  39 if test -z "$instserial"; then
  40    echo "acinstall: no serial number in $dir/$file" 1>&2
  41    exit 1
  42 fi
  43
  44 if test $localserial -lt $instserial; then
  45    # Installed file is newer.
  46    exit 0
  47 fi
  48
  49 # Install the file.
  50 $* $file $dir/$file