#!/bin/bash
# Copyright 2017 Google Inc. All Rights Reserved.
#
# 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
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

# This script configures, verifies, and prepares toolchain paths.
# This script is sourced from download_gcc.sh and download_clang.sh

set -e

base_path=${COBALT_TOOLCHAINS_DIR:=${HOME}/cobalt-toolchains}
toolchain_path=${base_path}/${toolchain_folder}

toolchain_binary=${toolchain_path}/${binary_path}

if [ -x ${toolchain_binary} ]; then
  # The toolchain binary already exist.
  echo ${toolchain_name} ${version} already available.
  exit 0
fi

if [ -d ${toolchain_path} ]; then
  cat <<EOF 1>&2
  ERROR: ${toolchain_name} ${version} folder ${toolchain_path}
  already exists, but it does not contain a binary.
  Perhaps a previous download was interrupted or failed?
EOF
  rm -rf ${toolchain_path}
fi

mkdir -p ${toolchain_path}
cd ${toolchain_path}

logfile=${toolchain_path}/"build_log.txt"

cat <<EOF 1>&2
Downloading and compiling ${toolchain_name} version ${version} into ${toolchain_path}
Log file can be found at ${logfile}
This may take ${build_duration}
EOF