[Interest] Problems with Clang 3.9 and Qt 5.8 preBeta

[Oliver Niebuhr]

Hello.

I heard a lot of good things about Clang and decided to try it out.
This are my very first steps but yes, I read a lot on the interwebs
already

My Problems are:
1.) I am not 100percent sure how to setup MSVC/Clang correctly. There
are many outdated posts, so i hopefully got a lot closer with my current
configure parameters. And the ones I found in the Qt Forum are mostly
saying "...you should ask on the Mailing List..."

2.) As Qt 5.8 has of course a lot of Bugs left, I am not sure if the
Clang Error is related to a) my configure parameters b) Clang 3.9 or c)
a Bug in the Qt Framework.

The Error is: QMAKE does not get compiled.
The Error Message is:

In file included from ..\include\QtCore\5.8.0\QtCore\private/qvariant_p.h:1:
..\include\QtCore\5.8.0\QtCore\private/../../../../../../../qt5srcgit/qt5/qtbase/src/corelib/kernel/qvariant_p.h(433,27):
 error: use of overloaded operator '<<' is ambiguous (with operand types
'QDebug' and 'nullptr_t')
dbg.nospace() << *v_cast<T>(d);
~~~~~~~~~~~~~ ^  ~~~~~~~~~~~~~

I calling a Batch File from the VS CMD Shell with the following content:

cd c:\xsdf64
set CLANG-CL=-Wambiguous-member-template-

set
PATH=C:\qt5srcgit\qt5\gnuwin32\bin;C:\Perlx64\perl\bin;C:\Pythonx64\;C:\Rubyx64\bin;%PATH%;C:\git\bin\

c:\qt5srcgit\qt5\configure -make-tool jom -no-pch -platform
win32-clang-msvc2015 -verbose -opensource -confirm-license -prefix
c:\qt-build64 -opengl dynamic -release -mp -openssl -nomake tests
-nomake examples -no-warnings-are-errors -skip qt3d -skip qtactiveqt
-skip qtandroidextras -skip qtcharts -skip qtdatavis3d -skip qtgamepad
-skip qtmacextras -skip qtpurchasing -skip qtscript -skip qtscxml -skip
qtsensors -skip qtserialport -skip qtserialbus -skip qtvirtualkeyboard
-skip qtnetworkauth -skip qtspeech

After that, I simply call
jom -j6 >compile.log

Used Software:
Windows 10 14393.222
Windows SDK 10.0.10586 (14393 is not yet supported by Chromium)
VS 2015 Community Update 3, 14.0.25431.01
Jom 1.1.1 + 1.1.0
Clang 3.9 x64 Windows Binaries
Qt 5.8 latest Git Branch

I also tried Qt 5.7.0 (which compiles QMAKE fine with all mentioned
Clang Versions. But they break with ANGLE compilation Error.), Clang
3.8.0 and 3.8.1.

Any hint is appreciated
Thanks!
Oliver

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