Re: [boost] [gil] Phasing out support C++11 and switching to C++17

On Mon, Oct 26, 2020 at 8:38 AM Mateusz Loskot via Boost < boost@lists.boost.org> wrote:

On Mon, 26 Oct 2020 at 15:53, Robert Ramey via Boost wrote:

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On 10/26/20 2:37 AM, Mateusz Loskot via Boost wrote:

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We're discussing [1] to start switching GIL to C++17 in the near future and, following Peter Dimov's policy on phasing out C++XY support [2], we'd like to:

1. Declare C++11 support deprecated in 1.75 (December 2020) 2. Drop C++11 support in 1.77 (?) (August 2021)

Could anyone help us validate and confirm that it's a good plan or are we overlooking any policies from Boost's release perspective?

[1] https://lists.boost.org/boost-gil/2020/10/0465.php [2] https://pdimov.github.io/articles/phasing_out_cxx03.html

Just out of curiosity, what new features and/or benefits (if any) will moving to conformance with C++17 add?

e.g. make the library sexier for contributors who actually expressed interest in developing features for the library and who wish to use `-std=c++17` at least when they develop pull requests for the library.

Really, the stated reason for dropping support for C++11 is that it will make the library "sexier"? I understand that this would enable GIL to be compiled as a standalone library, and that's a good thing, but it would be better to provide that functionality and not break what currently works. Or at least take a stab at it and see how bad it is to support both. After all, Boost provides excellent support for workarounds and compiler compatibility.