Re: [config] Switching to C++11 after 1.73 release

From: Andrey Semashev (andrey.semashev_at_[hidden])
Date: 2020-03-26 11:49:54

On 2020-03-26 14:26, Adam Wulkiewicz via Boost wrote:
> W dniu 26.03.2020 o 11:45, Mateusz Loskot via Boost pisze:
>> On Thu, 26 Mar 2020 at 11:38, Alexander Grund via Boost
>> <boost_at_[hidden]> wrote:
>>> How would I tell the test matrix about this? 
>> By specifying cxx11 features as required in test/Jamfile
>>
>> For example:
>> https://github.com/boostorg/mp11/blob/develop/test/Jamfile#L15
>> https://github.com/boostorg/gil/blob/develop/test/Jamfile#L57-L63
> Currently to check the standard support we have to use several macros or 
> write our own check based on compiler version. Now more libraries are 
> switching to the newer standard I think a set of macros defining full 
> support for a standard would be useful so an author could check one 
> macro as a base requirement for a library and from that point enable 
> additional features conditionally.
> So what do you think about adding e.g. BOOST_CXX11, BOOST_CXX14, etc. to 
> Boost.Config?
> Or in negated form: BOOST_NO_CXX11, BOOST_CXX14, etc. which we all 
> learned to love. ;)

This would not be practical, as probably no compiler implements the 
standard fully and without bugs. And you most probably not using every 
C++ feature either, so you're interested in some subset of features.