On quinta-feira, 19 de janeiro de 2017 16:54:58 PST Prav wrote: > Hello, Thiago. > > >> And why Qt now needs RTTI? Qt 5.7.0 was building fine without RTTI. What > >> features added to 5.8.0 made RTTI mandatory I wonder? > > > > Someone added a dynamic_cast. That's all. > > OK. Someone added dynamic_cast somewhere in Qt and whole Qt lost ability to > be build without RTTI. And you added patch to remove -no-rtti flag for > 5.8.1. I got it.
Yeah, because I had three choices: a) leave it, which meant that you could compile qtbase with -no-rtti, but you'd run into a compiler error later if you tried to compile qtdeclarative b) remove the option, so that no one can get a compiler error c) remove the dynamic_cast by adding our own hand-rolled RTTI to detect whether the object in question was of the class that the code wanted (c) was too much work, (a) didn't look nice. > >>So finally : Qt version 5.8.0 can NOT be build under Win7 with Win7SDK!? > >>(It seems Qt for desktop need some definitions from WinRT ... who know > >>why)> > >Qt 5.8 can be built under Win7, but you should use the Win10SDK. The reason > >for that is that you want your programs to support Windows 10, regardless > >of what you use to develop. > > OK. Someone added unknown Win10 features to Qt lib unconditionally and now > desktop Qt build depends on WinRT SDK and as result Qt can not be build > with Win7SDK now. > I got this also. Nope. It doesn't depend on the WinRT SDK. It depends on the Windows (desktop) 8 SDK. Requiring you to have the latest SDK is an acceptable compromise. > I do NOT feel good about how easy and invisibly such fundamental > compatibility features are lost in Qt because of very small and probably > unimportant changes in Qt code. I can only live with Qt in the way it will > be created by Thiago and others Qt's developers. Explain to me why you want your applications, when run on Windows 10, *not* to have the best functionality. Note that it will still run on Windows 7 and 8.1, with the same binary. If you give me a good enough reason, I will consider applying a fix myself. > But I still want to be able to build it under windows? I still do not > understand why I still have error (even when I use Win10SDK and if I will > NOT use -no-rtti): error is in : > qtdeclarative\src\plugins\scenegraph\d3d12\Makefile.Debug > [.obj\debug\qsgd3d12shadereffectnode.obj] Error 2 and it is : > qtdeclarative\src\plugins\scenegraph\d3d12\qsgd3d12shadereffectnode.cpp(544) > : error C2061: syntax error : identifier 'textureProviders' > > What is that and why it can be? How to avoid that error? That looks like a genuine problem, but I have no clue what it is about. Please report it against Qt3D. -- Thiago Macieira - thiago.macieira (AT) intel.com Software Architect - Intel Open Source Technology Center _______________________________________________ Interest mailing list Interest@qt-project.org http://lists.qt-project.org/mailman/listinfo/interest
