message: Update for build.sh script
diff: #!/bin/bash
  # ##################################################
  -# Copyright (c) 2019, Intel Corporation
  +# Copyright (c) 2020, Intel Corporation
  # All rights reserved.
  #
  # Redistribution and use in source and binary forms, with or without
  @@ -37,33 +37,33 @@ set -o errexit
  scriptName="${BASH_SOURCE[0]}"
  scriptPath="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
  +# Flags which can be overridden by user input
  +# Default values are below
  +ispc_home=${scriptPath}/..
  +llvm_dir=${ispc_home}/llvm
  +llvm_version=10.0
  +ispc_build=${ispc_home}/build
  +ispc_install=${ispc_home}/install
  +speed=4
  +
  # Print usage
  usage() {
  echo -n "${scriptName} [OPTION]...
  -This is a script to build ISPC from scratch, including building patch version of LLVM.
  +This is a script to build ISPC from scratch, including building patched version of LLVM.
  NOTE THAT RELEASE VERSION OF ISPC MUST BE BUILT WITH PATCHED VERSION OF LLVM.
  Options:
  - -v, --version LLVM version to build with. 5.0 is currently recommended.
  + -v, --version LLVM version to build with. ${llvm_version} is currently recommended.
  -h, --ispc_home Path to ISPC HOME directory.
  - -l, --llvm_dir Path to use for LLVM build. ${ISPC_HOME}/llvm is default.
  - -b, --ispc_build Path to ISPC build directory. ${ISPC_HOME}/build is default.
  - -i, --ispc_install Path to ISPC install directory. ${ISPC_HOME}/install is default.
  - -j, --speed Number of threads for build. 4 is default.
  + -l, --llvm_dir Path to use for LLVM build. ${llvm_dir} is default.
  + -b, --ispc_build Path to ISPC build directory. ${ispc_build} is default.
  + -i, --ispc_install Path to ISPC install directory. ${ispc_install} is default.
  + -j, --speed Number of threads for build. ${speed} is default.
  --help Display this help and exit.
  "
  }
  -# Flags which can be overridden by user input
  -# Default values are below
  -ispc_home=${scriptPath}/..
  -llvm_dir=${ispc_home}/llvm
  -llvm_version=5.0
  -ispc_build=${ispc_home}/build
  -ispc_install=${ispc_home}/install
  -speed=4
  -
  # Read the options and set the flags
  while [[ $1 = -?* ]]; do
  case $1 in
  @@ -95,7 +95,7 @@ export ISPC_HOME=${ispc_home}
  export LLVM_VERSION=${llvm_version}
  # Run alloy.py to checkout, patch and build LLVM
  -python3 ${ISPC_HOME}/alloy.py --version=${llvm_version} -b --selfbuild -j ${speed} --git && \
  +python3 ${ISPC_HOME}/alloy.py -b --version=${llvm_version} --selfbuild -j ${speed} && \
  rm -rf ${LLVM_HOME}/build-${LLVM_VERSION} ${LLVM_HOME}/llvm-${LLVM_VERSION} ${LLVM_HOME}/bin-${LLVM_VERSION}_temp ${LLVM_HOME}/build-${LLVM_VERSION}_temp
  exitCode=$?; if [[ ${exitCode} != 0 ]]; then exit ${exitCode}; fi
  export PATH=${LLVM_HOME}/bin-${LLVM_VERSION}/bin:$PATH
  