def _get_default_options():
    """
    Returns a dictionary with the available compiler options and the default values

    Returns:
        default_options (Dict)

    """
    return {'library_folders': [], 'verbose': False, 'check_balanced': True,
        'mtime_check': True, 'cache': False, 'codegen': False, 'expand_mx':
        False, 'unroll_loops': True, 'inline_functions': True,
        'expand_vectors': False, 'replace_parameter_expressions': False,
        'replace_constant_expressions': False,
        'eliminate_constant_assignments': False, 'replace_parameter_values':
        False, 'replace_constant_values': False,
        'eliminable_variable_expression': None,
        'factor_and_simplify_equations': False, 'detect_aliases': False,
        'reduce_affine_expression': False}
