#! /usr/bin/env bash

# file      : build/meta/automake
# copyright : Copyright (c) 2009-2012 Code Synthesis Tools CC
# license   : GNU GPL v2; see accompanying LICENSE file

# Process automake Makefile.am templates.
#
# Options:
#
# -o <output-file>
#
# Arguments:
#
# <template-file>
#
trap 'exit 1' ERR

function error ()
{
  echo "$*" 1>&2
}

output=

while [ $# -gt 0 ]; do
  case $1 in
    -o)
      output=$2
      shift 2
      ;;
    *)
      break
      ;;
  esac
done

input=$1

if [ "$input" = "" ]; then
  error "no input file"
  exit 1
fi

if [ "$output" = "" ]; then
  error "no output file"
  exit 1
fi

m4=m4

# Assume this script is never found via PATH.
#
meta=`dirname $0`

build="$meta/.."
install=$build/install/install

# Make sure the output directory exist.
#
$install -d -m 755 `dirname $output`

$m4 -P -D__meta_base__=$meta $meta/automake.m4 $input >$output
chmod 644 $output