Build: qt6 - nmake error C3861: 'tr' identifier not found nmake error in ifcdef.cpp

[slspencer]

Describe the problem or new action
qt6 build with Windows / MSVC 2019 / Qt 6.5.2 generates this error (most of the error is the cl.exe command & parameters)

-I..\..\..\..\seamly2d\src\libs\ifc 
-I. 
-I..\..\..\..\seamly2d\src\libs\vtools 
-I..\..\..\..\seamly2d\src\libs\vwidgets 
-I..\..\..\..\seamly2d\src\libs\vformat 
-I..\..\..\..\seamly2d\src\libs\vpatterndb 
-I..\..\..\..\seamly2d\src\libs\fervor 
-I..\..\..\..\seamly2d\src\libs\vmisc 
-I..\..\..\..\seamly2d\src\libs\vgeometry 
-I..\..\..\..\seamly2d\src\libs\ifc 
-I..\..\..\..\seamly2d\src\libs\vlayout 
-I..\..\..\..\seamly2d\src\libs\qmuparser 
-I..\..\..\..\seamly2d\src\libs\vpropertyexplorer 
-I..\..\..\..\seamly2d\src\libs\vtest 
-I..\..\..\..\seamly2d\src\libs\xerces-c\msvc\include 
-ID:\ProgramFiles\Qt6\6.5.2\msvc2019_64\include 
-ID:\ProgramFiles\Qt6\6.5.2\msvc2019_64\include\QtXml 
-ID:\ProgramFiles\Qt6\6.5.2\msvc2019_64\include\QtPrintSupport 
-ID:\ProgramFiles\Qt6\6.5.2\msvc2019_64\include\QtWidgets 
-ID:\ProgramFiles\Qt6\6.5.2\msvc2019_64\include\QtGui 
-ID:\ProgramFiles\Qt6\6.5.2\msvc2019_64\include\QtCore 
-Imoc 
-I/include 
-ID:\ProgramFiles\Qt6\6.5.2\msvc2019_64\mkspecs\win32-msvc 
-Foobj\ 
@C:\Users\SLSPEN~1\AppData\Local\Temp\nm8D94.tmp
ifcdef.cpp
..\..\..\..\seamly2d\src\libs\ifc\ifcdef.cpp(248): error C2027: use of undefined type 'QObject'
D:\ProgramFiles\Qt6\6.5.2\msvc2019_64\include\QtCore/qsharedpointer_impl.h(36): note: see declaration of 'QObject'
..\..\..\..\seamly2d\src\libs\ifc\ifcdef.cpp(248): error C3861: 'tr': identifier not found
..\..\..\..\seamly2d\src\libs\ifc\ifcdef.cpp(251): error C2027: use of undefined type 'QObject'
D:\ProgramFiles\Qt6\6.5.2\msvc2019_64\include\QtCore/qsharedpointer_impl.h(36): note: see declaration of 'QObject'
..\..\..\..\seamly2d\src\libs\ifc\ifcdef.cpp(251): error C3861: 'tr': identifier not found
..\..\..\..\seamly2d\src\libs\ifc\ifcdef.cpp(254): error C2027: use of undefined type 'QObject'
D:\ProgramFiles\Qt6\6.5.2\msvc2019_64\include\QtCore/qsharedpointer_impl.h(36): note: see declaration of 'QObject'
..\..\..\..\seamly2d\src\libs\ifc\ifcdef.cpp(254): error C3861: 'tr': identifier not found
..\..\..\..\seamly2d\src\libs\ifc\ifcdef.cpp(257): error C2027: use of undefined type 'QObject'
D:\ProgramFiles\Qt6\6.5.2\msvc2019_64\include\QtCore/qsharedpointer_impl.h(36): note: see declaration of 'QObject'
..\..\..\..\seamly2d\src\libs\ifc\ifcdef.cpp(257): error C3861: 'tr': identifier not found
..\..\..\..\seamly2d\src\libs\ifc\ifcdef.cpp(260): error C2027: use of undefined type 'QObject'
D:\ProgramFiles\Qt6\6.5.2\msvc2019_64\include\QtCore/qsharedpointer_impl.h(36): note: see declaration of 'QObject'
..\..\..\..\seamly2d\src\libs\ifc\ifcdef.cpp(260): error C3861: 'tr': identifier not found
..\..\..\..\seamly2d\src\libs\ifc\ifcdef.cpp(264): error C2027: use of undefined type 'QObject'
D:\ProgramFiles\Qt6\6.5.2\msvc2019_64\include\QtCore/qsharedpointer_impl.h(36): note: see declaration of 'QObject'
..\..\..\..\seamly2d\src\libs\ifc\ifcdef.cpp(264): error C3861: 'tr': identifier not found```
**Is this for a particular OS?**

**Can this be handled in Github Actions (https://github.com/marketplace?type=actions)**
The fix is to include the Qt6's QObject:
``` #include<QObject>