Re: cmake cxx standard and USES compiler:c++{17,14,11}-lang

Hi Felix,

Thanks for your explanation.

Cheers

Felix Palmen <felix@palmen-it.de> escreveu no dia domingo, 31/07/2022 à(s)
08:18:

> Hello Nuno,
>
> * Nuno Teixeira <eduardo@freebsd.org> [20220730 22:00]:
> > I'm working on a port that have wrksrc CMakeLists.txt:
> > ---
> > set(CMAKE_CXX_STANDARD 17)
> > set(CMAKE_CXX_STANDARD_REQUIRED ON)
> > ---
> > but port Makefile have:
> > ---
> > USES= cmake compiler:c++14-lang
> > ---
> >
> > Should I change it to compiler:c++17-lang?
>
> Most likely yes.
>
> > Do USES= compiler have any influence on cmake building?
>
> Currently not in practice. It will just pull in a compiler from ports
> *if* the base compiler doesn't offer the standard required, but as far
> as I know, a base compiler supporting c++14 will also support c++17 (and
> after EOL of 12, there won't be any base compilers left not supporting
> these standards).
>
> I have a review open trying to add c++20 and c++2b *and* to honor
> LLVM_DEFAULT in case it will pull in llvm here:
> <https://reviews.freebsd.org/D35889>
>
> BR, Felix
>
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