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 file="$1"
  11 dir="$2"
  12 shift
  13 shift
  14
  15 localserial=`grep '^# serial ' $file | sed -e 's/^# serial \([0-9][0-9]*\).*$/\1/; q'`
  16 if test -z "$localserial"; then
  17    echo "acinstall: no serial number in $file" 1>&2
  18    exit 1
  19 fi
  20
  21 # Maybe if the installed file has no serial number we should just
  22 # assume it is ancient.
  23 instserial=`grep '^# serial ' $dir/$file | sed -e 's/^# serial \([0-9][0-9]*\).*$/\1/; q'`
  24 if test -z "$instserial"; then
  25    echo "acinstall: no serial number in $dir/$file" 1>&2
  26    exit 1
  27 fi
  28
  29 if test $localserial -lt $instserial; then
  30    # Installed file is newer.
  31    exit 0
  32 fi
  33
  34 # Install the file.
  35 $* $file $dir/$file