On Wed, 3 May 2023 at 03:41, Thiago Macieira <thiago.macie...@intel.com> wrote: > > C++23 is on the way, so maybe it's time for us to raise our minimum to the one > version before that. Let's aim for Qt 6.7, because feature-freeze for 6.6 is > within one month, and lets us warn our users this is coming. > > By this, I mean to: > * modify our build system so Qt compiles with -std=c++20 or equivalent > * require that user code compiling Qt headers be similarly done > * remove the requirement for #if checks for C++17 Standard Library features > * make a couple of C++20 features mandatory (see below) > > Of the C++20 features I currently see a good reason to make mandatory: > * feature-test macros (no change: we're already using them) > * spaceship operator and <compare> header > * char8_t > * std::is_constant_evaluated() > * constinit > * <bit> header > * (maybe) designated initialisers > * (maybe) constexpr from <algorithm> and <utility>
I don't see any of these as worth breaking embedded users who want new Qt versions but don't yet have the compilers that can give them these facilities. -- Development mailing list Development@qt-project.org https://lists.qt-project.org/listinfo/development
