bb2b073ed (dev), 06ef8ce56 (6.5), 790e3b2a1 (6.4)
For some reason Qt 6 does not autodetect the latest C++ support by the compiler, instead it requires an opt-in switch to cmake / configure.
This switch is not currently being passed on the CI. The result is that Qt actually FTBFS if C++ 20 gets enabled (some C++ 20 specific codepath was never tested and had errors).
- install recent enough compilers on the CI (GCC >= 10, MSVC 2019-latest, clang >= 12, etc.)
- Build as C++20:
- either restore the autodetection, and install recent enough compilers on the CI, so we can catch such mistakes, or
- manually pass the relevant switch to configure/cmake so to enable C++20 on the toolchains that do support it.
|For Gerrit Dashboard: QTQAINFRA-4117|
|405793,6||Enable C++20 standard for Windows developer builds||dev||qt/qt5||Status: NEW||+2||0|
|407735,1||QProperty: Do not attempt to use source_location in C++20 mode on MSVC||dev||qt/qtbase||Status: NEW||+1||0|