Re: C++11 on up Boost libraries

From: Edward Diener (eldiener_at_[hidden])
Date: 2020-12-30 17:34:57

On 12/30/2020 12:12 PM, John Maddock via Boost wrote:
> On 30/12/2020 15:04, Edward Diener via Boost wrote:
>> On 12/30/2020 7:20 AM, Paul A Bristow via Boost wrote:
>>> Boost.Math has a documented minimum requirement of C++11 (but many 
>>> library functions, distributions etc still work with C++03, and some 
>>> new library items require C++17, and some are likely to require C++20 
>>> very soon).
>>>
>>> I'm sorry that this doesn't fit neatly into your schema ☹
>>
>> I think then 'cxxstd' should be '11' for Boost.Math. Does this also 
>> need to be set for any of:
>>
>> Math Common Factor
>> Math Octonian
>> Math Quaternion
>> Math/Special Functions
>> Math/Statistical Distributions
> 
> All of them come under Boost.Math, and all are moving to C++11 in the 
> next release (OK, so here and there stuff may work in C++03, but it 
> won't be tested any more).

It is really up to the maintainers to set 'cxxstd' to whatever they feel 
is the minimum C++ standard level for their library. I can put in a PR 
for all the math libraries as "cxxstd": "11", but maintainers should set 
the right value for the future.

> 
> Likewise Multiprecision is moving to actively require C++11 in the next 
> release.

Then it should be "cxxstd": "11".

> 
> Also Regex will deprecate C++03 in the next release - it will continue 
> to work for a bit but the future is C++11.

I know you are the regex maintainer so it is your call.

> 
> HTH, John.
> 
>>
>> ?
>>
>>>
>>> Paul
>>>
>>>
>>>> -----Original Message-----
>>>> From: Boost <boost-bounces_at_[hidden]> On Behalf Of Edward 
>>>> Diener via Boost
>>>> Sent: 30 December 2020 04:23
>>>> To: boost_at_[hidden]
>>>> Cc: Edward Diener <eldiener_at_[hidden]>
>>>> Subject: [boost] C++11 on up Boost libraries
>>>>
>>>> In my effort to set the meta information of 'cxxstd' for the 
>>>> appropriate
>>>> C++11 on up libraries, my PRs for these libraries have been kindly
>>>> merged to 'develop' by the library maintainers:
>>>>
>>>> beast
>>>> callable_traits
>>>> context
>>>> convert
>>>> coroutine2
>>>> fiber
>>>> geometry
>>>> gil
>>>> hana
>>>> histogram
>>>> hof
>>>> json
>>>> leaf
>>>> mp11
>>>> nowide
>>>> outcome
>>>> pfr
>>>> process
>>>> safe_numerics
>>>> static_string
>>>> stl_interfaces
>>>> variant2
>>>> yap
>>>>
>>>> If anyone knows of any other current library which is a C++11 on up
>>>> library, please tell me. My testing showed that all other Boost
>>>> libraries will work in C++03 mode, but maybe I missed some other 
>>>> library
>>>> which is a C++11 on up library.
>>>>
>>>> Needless to say other libraries have noted their attention to move from
>>>> C++03 to C++11 in the near future. If any library does change the C++
>>>> mode necessary to use that library, I hope the maintainer(s) of that
>>>> library will update the 'cxxstd' meta information appropriately.
>>>>
>>>> If we can get the website to work properly using the 'cxxstd' meta
>>>> information, end-users should be able to know immediately whether a
>>>> Boost library is usable depending on the C++ standard mode their are 
>>>> using.
>>>>
>>>>
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>>>
>>>
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>>
>>
>>
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> 
>