def get_config_var(name):
    """Return the value of a single variable using the dictionary
    returned by 'get_config_vars()'.  Equivalent to
    get_config_vars().get(name)
    """
    if name == 'SO':
        import warnings

        warnings.warn('SO is deprecated, use EXT_SUFFIX', DeprecationWarning, 2)
    return get_config_vars().get(name)
Return the value of a single variable using the dictionary
    returned by 'get_config_vars()'.  Equivalent to
    get_config_vars().get(name)
    
product/gradle-plugin/src/main/python/setuptools/_distutils/sysconfig.py