(It also has the very nice feature of using lld on windows, which links muuuuch faster than bfd / gold, which could be useful for reducing CI times) <http://www.jcelerier.name>
On Fri, Nov 20, 2020 at 9:27 PM Jean-Michaël Celerier < jeanmichael.celer...@gmail.com> wrote: > > The big problem I see on Windows is unfortunately not the C++ standard > library, but the C standard library. MinGW defaults to crtdll, the one > from > MSVC 6, which is not C99-compliant (MSVC 6 is from 1998 after all). A > better > alternative exists in the form of the Universal CRT, but that only comes > by > default with Windows 10, so we'd need to drop support for 8.1 -- have we > done > that? -- and recompile GCC and/or LLVM so they ask the linker to link to > ucrt. > > https://github.com/mstorsjo/llvm-mingw can be made to target ucrt; it > even has > releases: https://github.com/mstorsjo/llvm-mingw/releases/tag/20201020 > > As a data point, I've been using this toolchain for my own stuff for a > couple years now > and it works really well, though I only exercise > qtbase/qtdeclarative/couple of smaller libs. > > All the best, > Jean-Michaël > > > On Fri, Nov 20, 2020 at 5:09 PM Thiago Macieira <thiago.macie...@intel.com> > wrote: > >> On Friday, 20 November 2020 00:09:46 PST Oliver Wolff wrote: >> > The question is not about having one more supported Windows >> > configuration. We do not have the resources to add more and more >> > configurations to support, so it's more a "replace mingw for Windows >> > with something else" situation. As there seems to be a need for an open >> > alternative, it looks like we cannot/should not go the clang-cl way, but >> > clang-mingw if we replace mingw with a clang toolchain. >> >> That is not an option. We must have one MinGW configuration. >> >> We can choose which compiler and which version thereof, especially if the >> official MinGW comes with an old GCC. If we think Clang + libcompiler-rt >> + >> libc++ is a better solution for Windows, then we should explore it and >> even >> make it the default. But unless we do it RIGHT NOW, we will need an >> overlap >> period with a libstdc++ MinGW, due to ABI break. >> >> The big problem I see on Windows is unfortunately not the C++ standard >> library, but the C standard library. MinGW defaults to crtdll, the one >> from >> MSVC 6, which is not C99-compliant (MSVC 6 is from 1998 after all). A >> better >> alternative exists in the form of the Universal CRT, but that only comes >> by >> default with Windows 10, so we'd need to drop support for 8.1 -- have we >> done >> that? -- and recompile GCC and/or LLVM so they ask the linker to link to >> ucrt. >> >> -- >> Thiago Macieira - thiago.macieira (AT) intel.com >> Software Architect - Intel DPG Cloud Engineering >> >> >> >> _______________________________________________ >> Development mailing list >> Development@qt-project.org >> https://lists.qt-project.org/listinfo/development >> >
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