#!/bin/bash -u
  
  # Copyright 2015 (c) Johns Hopkins University (Jan Trmal <jtrmal@gmail.com>)
  
  # Licensed under the Apache License, Version 2.0 (the "License");
  # you may not use this file except in compliance with the License.
  # You may obtain a copy of the License at
  #
  #  http://www.apache.org/licenses/LICENSE-2.0
  #
  # THIS CODE IS PROVIDED *AS IS* BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
  # KIND, EITHER EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION ANY IMPLIED
  # WARRANTIES OR CONDITIONS OF TITLE, FITNESS FOR A PARTICULAR PURPOSE,
  # MERCHANTABLITY OR NON-INFRINGEMENT.
  # See the Apache 2 License for the specific language governing permissions and
  # limitations under the License.
  
  [ -f ./path.sh ] && . ./path.sh
  
  command -v uconv &>/dev/null \
    || { echo  >&2 "uconv not found on PATH. You will have to install ICU4C"; exit 1; }
  
  command -v ngram &>/dev/null \
    || { echo  >&2 "srilm not found on PATH. Please use the script $KALDI_ROOT/tools/extras/install_srilm.sh to install it"; exit 1; }
  
  if [  -z ${LIBLBFGS} ]; then
    echo >&2  "SRILM is not compiled with the support of MaxEnt models."
    echo >&2  "You should use the script in \$KALDI_ROOT/tools/install_srilm.sh"
    echo >&2  "which will take care of compiling the SRILM with MaxEnt support"
    exit 1;
  fi
  
  sox=`command -v sox 2>/dev/null` \
    || { echo  >&2 "sox not found on PATH. Please install it manually (you will need version 14.4.0 and higher)."; exit 1; }
  
  # If sox is found on path, check if the version is correct
  if [ ! -z "$sox" ]; then
    sox_version=`$sox --version 2>&1| head -1 | sed -e 's?.*: ??' -e 's?.* ??'`
    if [[ ! $sox_version =~ v14.4.* ]]; then
      echo "Unsupported sox version $sox_version found on path. You will need version v14.4.0 and higher."
      exit 1
    fi
  fi
  
  command -v phonetisaurus-align &>/dev/null \
    || { echo  >&2 "Phonetisaurus not found on PATH. Please use the script $KALDI_ROOT/tools/extras/install_phonetisaurus.sh to install it"; exit 1; }
  
  command -v BeamformIt &>/dev/null \
    || { echo  >&2 "BeamformIt not found on PATH. Please use the script $KALDI_ROOT/tools/extras/install_beamformit.sh to install it"; exit 1; }
  
  exit  0