[PyQt] fatal error configuring PyQt5.11.2: Cannot open include file: 'QDataStream': No such file or directory

[Timothy W. Grove]

On 12/09/2018 15:54, Phil Thompson wrote:
> On 12 Sep 2018, at 3:45 pm, Timothy W. Grove <tim_grove at sil.org> wrote:
>> Trying to build the latest PyQt5.11.2 (or PyQt5.11.3dev snapshot) and it fails on configure for me with the error:
>>
>> ..\qpy\QtCore\qpycore_pyqtpyobject.h(29): fatal error C1083: Cannot open include file: 'QDataStream': No such file or directory
>>
>> More info below.
>>
>> Best regards,
>> Tim
>>
>>
>> Microsoft (R) Program Maintenance Utility Version 14.15.26726.0
>> Copyright (C) Microsoft Corporation.  All rights reserved.
>>
>>          "C:\Program Files (x86)\Microsoft Visual Studio\2017\Community\VC\Tools\MSVC\14.15.26726\bin\HostX86\x86\nmake.exe" -f Makefile.Release
>>
>> Microsoft (R) Program Maintenance Utility Version 14.15.26726.0
>> Copyright (C) Microsoft Corporation.  All rights reserved.
>>
>>          cl -BxC:\Qt\Qt-5.11.2\bin\qmake.exe -nologo -Zc:wchar_t -FS -Zc:rvalueCast -Zc:inline -Zc:strictStrings -Zc:throwingNew -Zc:referenceBinding -Zc:__cplusplus -O2 -MD /wd4530 /wd4577 -W3 -w34100 -w34189 -w44996 -w44456 -w44457 -w44458 -wd4577 -wd4467 -E C:\Qt\Qt-5.11.2\mkspecs\features\data\dummy.cpp 2>NUL >release\moc_predefs.h
>>          C:\Qt\Qt-5.11.2\bin\moc.exe -DUNICODE -D_UNICODE -DWIN32 -D_ENABLE_EXTENDED_ALIGNED_STORAGE -DPy_LIMITED_API=0x03040000 -DQT_NO_EXCEPTIONS -DQT_NO_DEBUG -DQT_PLUGIN -DQT_CORE_LIB -DNDEBUG -D_WINDLL --compiler-flavor=msvc --include C:/Users/Samuel/Downloads/PyQt5_gpl-5.11.3.dev1808131157/QtCore/release/moc_predefs.h -IC:/Qt/Qt-5.11.2/mkspecs/win32-msvc -IC:/Users/Samuel/Downloads/PyQt5_gpl-5.11.3.dev1808131157/QtCore -IC:/Users/Samuel/Downloads/PyQt5_gpl-5.11.3.dev1808131157/QtCore -IC:/Python36/include -IC:/Users/Samuel/Downloads/PyQt5_gpl-5.11.3.dev1808131157/qpy/QtCore -IC:/Qt/Qt-5.11.2/include -IC:/Qt/Qt-5.11.2/include/QtCore -I"C:\Program Files (x86)\Microsoft Visual Studio\2017\Community\VC\Tools\MSVC\14.15.26726\ATLMFC\include" -I"C:\Program Files (x86)\Microsoft Visual Studio\2017\Community\VC\Tools\MSVC\14.15.26726\include" -I"C:\Program Files (x86)\Windows Kits\NETFXSDK\4.6.1\include\um" -I"C:\Program Files (x86)\Windows Kits\10\include\10.0.17134.0\ucrt" -I"C:\Program Files (x86)\Windows Kits\10\include\10.0.17134.0\shared" -I"C:\Program Files (x86)\Windows Kits\10\include\10.0.17134.0\um" -I"C:\Program Files (x86)\Windows Kits\10\include\10.0.17134.0\winrt" -I"C:\Program Files (x86)\Windows Kits\10\include\10.0.17134.0\cppwinrt" ..\qpy\QtCore\qpycore_event_handlers.h -o release\moc_qpycore_event_handlers.cpp
>>          cl -c -nologo -Zc:wchar_t -FS -Zc:rvalueCast -Zc:inline -Zc:strictStrings -Zc:throwingNew -Zc:referenceBinding -Zc:__cplusplus -O2 -MD /wd4530 /wd4577 -W3 -w34100 -w34189 -w44996 -w44456 -w44457 -w44458 -wd4577 -wd4467 -DUNICODE -D_UNICODE -DWIN32 -D_ENABLE_EXTENDED_ALIGNED_STORAGE -DPy_LIMITED_API=0x03040000 -DQT_NO_EXCEPTIONS -DQT_NO_DEBUG -DQT_PLUGIN -DQT_CORE_LIB -DNDEBUG -D_WINDLL -I. -I. -IC:\Python36\include -I..\qpy\QtCore -IC:\Qt\Qt-5.11.2\include -IC:\Qt\Qt-5.11.2\include\QtCore -Irelease -IC:\Qt\Qt-5.11.2\mkspecs\win32-msvc -Forelease\ @C:\Users\Samuel\AppData\Local\Temp\nm5C87.tmp
>> qpycore_post_init.cpp
>>
>> ..\qpy\QtCore\qpycore_pyqtpyobject.h(29): fatal error C1083: Cannot open include file: 'QDataStream': No such file or directory
> That's failing on build, not configure, and suggests a problem with your Qt installation.
>
> Phil

You are quite right; my mistake! Either way, it can't find QDataStream. 
Just spent half a day building and installing Qt. (Now I remember why I 
don't like building from source...) I'm really just trying to change the 
backend for mediaplayer to 'Windows Media Framework (wmf'); is there a 
shortcut to this apart from configuring and building all of QT???

Tim