[Boost.Config] Detect compiler support for std::current_exception

From: dariomt_at_[hidden]
Date: 2019-05-27 16:45:25

Hi all,

I'm working on a Boost.Exception issue [1]  and I need to detect compiler
support of std::current_exception. In the issue there is a suggestion to
use #if __cplusplus > 199711L but that does not work for my use case
(VS2015 reports __cplusplus = 199711L).

Is it possible to add a config macro for this?
Or is there a good enough existing macro I can use?

Thanks in advance

[1] https://github.com/boostorg/exception/issues/10