[Interest] Qt 5.8.0 RC build under windows

[Jason H]

I really think Qt needs a compile tool (like the Linux kernel has/had (make menuconfig or xconfig) ) that will also provide telemetry* when a build fails. I *never* have had Qt "just compile" and these days I'm compiling it for at least 3 platforms. 

Heck even a make clean doesn't complete without errors.

*Telemetry: the config, the resolved locations of libs and headers, compiler and compiler version, modules selected for compile and anything else that could help improve the Qt build experience.




> Sent: Monday, January 16, 2017 at 11:04 AM
> From: Prav <pr12og2 at programist.ru>
> To: "interest at qt-project.org" <interest at qt-project.org>
> Subject: [Interest] Qt 5.8.0 RC build under windows
>
> I tried to compile 5.8.0 RC just to see how healthy it is under windows with msvc2013 (update 5) compiler.
> 
> As I understand using header and libs of Windows 7 SDK should be OK for building Qt (at least it always was for previous versions).
> 
> But then I build I got errors. First error is in :
> qtbase\src\plugins\platforms\windows\Makefile.Debug [.obj\debug\qwindowsservices.obj] Error 2
> and it is :
> qtbase\src\plugins\platforms\windows\qwin10helpers.cpp(53) : fatal error C1083: Cannot open include file: 'inspectable.h': No such file or directory
> 
> So it is something about Win10 (from name qwin10helpers.cpp). Who asked for Win10 features? I did not
> 
> So what? We really need Win10 SDK to compile Qt for Win7 or this is mistake in build system?
> 
> 
> But OK. Let try Win10 SDK instead of Win7 SDK. Compiler will be same msvc2013 (update 5). In that case I get another error. First error is in :
> qtdeclarative\src\quick\Makefile.Release [.obj\release\qsgsoftwarepublicnodes.obj] Error 2
> and it is
> qtbase\include\qtcore\../../src/corelib/global/qglobal.h(1009) : error C2825: 'T': must be a class or namespace when followed by '::'
>         A:\qtt\__\580\qtdeclarative\src\quick\scenegraph\adaptations\software\qsgsoftwarepublicnodes.cpp(101) : see reference to function template instantiation 'T qt_dynamic_cast_check<QSGSoftwarePixmapTexture*,QSGTexture*>(X,T *)' being compiled
>         with
>         [
>             T=QSGSoftwarePixmapTexture *
> ,            X=QSGTexture *
>         ]
> 
> And some errors in the same file just after that :
> qtbase\include\qtcore\../../src/corelib/global/qglobal.h(1009) : error C2039: 'dynamic_cast_will_always_fail_because_rtti_is_disabled' : is not a member of '`global namespace''
> qtbase\include\qtcore\../../src/corelib/global/qglobal.h(1009) : error C2146: syntax error : missing ';' before identifier 'dynamic_cast_will_always_fail_because_rtti_is_disabled'
> qtbase\include\qtcore\../../src/corelib/global/qglobal.h(1009) : error C2275: 'T' : illegal use of this type as an expression
> qtdeclarative\src\quick\scenegraph\adaptations\software\qsgsoftwarepublicnodes.cpp(101) : see declaration of 'T'
> qtbase\include\qtcore\../../src/corelib/global/qglobal.h(1009) : error C2065: 'dynamic_cast_will_always_fail_because_rtti_is_disabled' : undeclared identifier
> qtdeclarative\src\quick\scenegraph\adaptations\software\qsgsoftwarepublicnodes.cpp(104) : see declaration of 'T'
> 
> Does anyone ever had such error in qtdeclarative? Why it happens?
> 
> 
> I can download
> qt-opensource-windows-x86-msvc2013-5.8.0-rc_699.exe
> which mean that msvc2013 should be fine to compile Qt.
> 
> 
> Finally:
> 1. I did something wrong?
> 2. Why there is need in Win10 SDK (this is feature or bug)?
> 3. May be some requirements changed for tools like perl or something else in 5.8.0 version and this is why I can not build the Qt 5.8.0 RC?
> 
> Thanks in advance!
> 
> 
> 
> PS
> I am building only some modules of Qt (if it matters ... but I belive it does not) :
> qtbase
> qtdeclarative
> qtxmlpatterns
> 
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