message: Darwin: when installing/upgrading boost removed the
diff: printf "\\tExiting now.\\n\\n"
  exit 1;
  fi
  +
  + if [ -d "$BUILD_DIR" ]; then
  + if ! rm -rf "$BUILD_DIR"
  + then
  + printf "\\tUnable to remove directory %s. Please remove this directory and run this script %s again. 0\\n" "$BUILD_DIR" "${BASH_SOURCE[0]}"
  + printf "\\tExiting now.\\n\\n"
  + exit 1;
  + fi
  + fi
  printf "\\tBoost 1.67.0 successfully installed @ /usr/local.\\n"
  else
  printf "\\tBoost 1.67.0 found at /usr/local.\\n"
  