Re: [boost] [parameter] Go C++11 and above only, or keep C++03 support?

Subject: Re: [boost] [parameter] Go C++11 and above only, or keep C++03 support?
From: Robert Ramey (ramey_at_[hidden])
Date: 2018-11-03 16:30:08

On 11/3/18 8:58 AM, Edward Diener via Boost wrote:
> On 11/3/2018 10:47 AM, Peter Dimov via Boost wrote:
>> Andrey Semashev wrote:
>>
>>> So I don't quite understand what were the recent discussions about 
>>> "dropping C++03" about.
>>
>> It appears that not many do.
>>
>> In short, the point is that much of the outside world thinks of Boost 
>> as a single thing. Our perspective as library maintainers is that 
>> libraries are independent, but that's not how others view them.
>>
>> To give you a specific example, if Parameter drops C++03 support, `b2 
>> install` will fail on all compilers where C++03 is default because Log 
>> will fail to build. This is spelled "Boost 1.70 fails to build".
> 
> I assume that the "dropping C++03 support" was also about building Boost 
> for C++11 on up.

Hmmm - since C++ versions are backward compatible, almost any C++03 
conforming program is also conforming to subsequent versions.  The only 
exceptions are a very few deprecations (like auto).  This leads me to 
not understand what it means to "drop C++03 support".  If one want's to 
compile all of boost with C++11, it should work - subject to the few 
cases site above. I don't see any need for any action by anyone.

Has anyone tried to build all of boost with C++ set to version 11?

What are the results?

If I had nothing else to do, I could do it.  But it's a moot question 
for me in any case.  Hmmm - then why am I replying here?  I don't know.

Robert Ramey

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