[Development] QProperty and library coding guide

[Simon Hausmann]

Olivier Goffart <olivier at woboq.com> schrieb am Fr. 17. Juli 2020 um 19:12:

> On 17/07/20 19:00, Thiago Macieira wrote:
> > On Friday, 17 July 2020 09:34:54 PDT Lars Knoll wrote:
> >>> I'll just post this and let you ponder the consequences of this choice
> for
> >>> Linux:
> >>> https://godbolt.org/z/nhex5x
> >>
> >> Yes, that’s why we need to encode that into a static_assert(). But the
> >> support it coming to all compilers and Linux desktops will support the
> >> feature both with gcc and clang. I’m pretty sure ICC will follow soon.
> >
> > Sure.
> >
> > But to be clear: we're saying the MINIMUM versions of GCC and Clang for
> Qt 6.0
> > are 9.0. GCC 9 was released in May 2019 and LLVM 9 was released in
> September
> > 2019.
> >
> > Apple Clang in the current XCode does NOT support it.
> >
> > Versions of mainstream Linux distributions with GCC 9:
> > * Debian: testing
> > * Fedora: 30
> > * openSUSE: 15.2
> > * Ubuntu: 19.10
> > (Arch, Clear, Gentoo are rolling releases)
> >
> > If you're not working from home, go around in the office and ask who's
> running
> > anything older.
> >
>
>
> Maybe use the GCC extension of using an empty array:
>
> https://godbolt.org/z/MvE9jf
> __________________________________________


I think the primary environment where a transition and resulting BC
breakage would be annoying is the Linux system environment with gcc. This
is where Olivier’s solution is quite elegant IMO.


Simon

>
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