#! /bin/sh

#

# This file is used by adlc.make to selectively update generated

# adlc files. Because source and target diretories are relative

# paths, this file is copied to the target build directory before

# use.

#

# adlc-updater <file> <source-dir> <target-dir>

#

fix_lines() {

  # repair bare #line directives in $1 to refer to $2

  awk < $1 > $1+ '

    /^#line 999999$/ {print "#line " (NR+1) " \"" F2 "\""; next}

    {print}

  ' F2=$2

  mv $1+ $1

}

fix_lines $2/$1 $3/$1

[ -f $3/$1 ] && cmp -s $2/$1 $3/$1 || \

( [ -f $3/$1 ] && echo Updating $3/$1 ; touch $2/made-change ; mv $2/$1 $3/$1 )