Re: [boost] [config] Using SD-6 macros

Subject: Re: [boost] [config] Using SD-6 macros
From: Edward Diener (eldiener_at_[hidden])
Date: 2015-06-13 10:01:33

On 6/13/2015 7:13 AM, Rob Stewart wrote:
> On June 12, 2015 10:26:49 PM EDT, Edward Diener <eldiener_at_[hidden]> wrote:
>> On 6/12/2015 1:05 PM, Peter Dimov wrote:
>>> Edward Diener wrote:
>>>
>>> It seems to me that there's no macro for SD-6 itself though. When
>>> __cpp_something is not defined, you don't know whether this is
>> because
>>> 'something' is not implemented or because SD-6 is not implemented.
>>
>> What difference could it possibly make ? You test if a macro is
>> defined
>> and if it is not you try something else. If it is you have your
>> answer.
>
> If the absence of an SD-6 macro implies a feature is not implemented, then the absence of SD-6 support indicates nothing is implemented when that's the mechanism used for discovery of features.

But who cares ? Each SD=6 feature test stands on its own. I could care 
less if a determination is made "somehow" that SD-6 as a whole is not 
implemented. It doesn't buy me anything.