On Mon, 12 Aug 2019 at 11:00, Lars Knoll <lars.kn...@qt.io> wrote: > Here’s the baseline I would like to propose: > > VC++ 2019 > GCC 8 > Clang 6 > Apple Clang 10.0 > > Why not the latest for all the compilers, like gcc 9 and clang 8? I assumed we > would use the 5.15 LTS to justify requiring the latest available compiler on > all platforms. > > > I used the minimal version that seemed to be giving us decent C++17 support > (according to https://en.cppreference.com/w/cpp/compiler_support).
Note that for GCC, 7 already has feature-wise almost everything for C++17. I have no problems with GCC 8 being the baseline, though; GCC 7 is already out-of-support from the upstream. Question about embedded targets (QNX, VxWorks, INTEGRITY): are we planning to indicate to the vendors of those platforms that the above gang-of-four-compilers is our baseline, and they need to achieve feature parity in order to be able to work with Qt 6? > I’d personally be favour of using newer version of gcc/clang, but I’m not > sure we gain a lot with it, as Apple clang is then probably the limiting > factor. But we could upgrade that to Apple Clang 11 as well. We gain a slightly better baseline wrt. bugs; GCC for instance doesn't backport to closed branches, and GCC 7 is already closed, and 8 will follow relatively quickly. While we can't keep up with that during our (especially LTS) release cycle, at least we're not targetting already-obsolete versions too badly. :) > So alternative proposal: > > VC++ 2019 > GCC 9 > Clang 8 > Apple Clang 11 Works for me. _______________________________________________ Development mailing list Development@qt-project.org https://lists.qt-project.org/listinfo/development
