[PySide] Failing build with newly-compiled PySide2 5.15.1

[Stephen Morris]

Following an apparently successful build of Qt 5.15.1 and PySide2 5.15.1 from 
source, I'm now attempting to compile the application which I was previously 
compiling using version 5.12.5.

I get a slew of error messages involving PySide Properties:

<myproject>_wrapper.cpp: In function ‘int 
Sbk_icp_RenderWindow_setattro(PyObject*, PyObject*, PyObject*)’:
<myproject>_wrapper.cpp:1984:66: error: ‘PySide::Property’ has not been declared
     Shiboken::AutoDecRef pp(reinterpret_cast<PyObject 
*>(PySide::Property::getObject(self, name)));
                                                                  ^~~~~~~~
<myproject>_wrapper.cpp:1986:24: error: ‘PySide::Property’ has not been declared
         return PySide::Property::setValue(reinterpret_cast<PySideProperty 
*>(pp.object()), self, value);
                        ^~~~~~~~
<myproject>_wrapper.cpp:1986:60: error: ‘PySideProperty’ does not name a type; 
did you mean ‘QMetaProperty’?
         return PySide::Property::setValue(reinterpret_cast<PySideProperty 
*>(pp.object()), self, value);
                                                            ^~~~~~~~~~~~~~
                                                            QMetaProperty
<myproject>_wrapper.cpp:1986:75: error: expected ‘>’ before ‘*’ token
         return PySide::Property::setValue(reinterpret_cast<PySideProperty 
*>(pp.object()), self, value);
                                                                           ^
<myproject>_wrapper.cpp:1986:75: error: expected ‘(’ before ‘*’ token
         return PySide::Property::setValue(reinterpret_cast<PySideProperty 
*>(pp.object()), self, value);
                                                                           
<myproject>
                                                                           (
<myproject>_wrapper.cpp:1986:76: error: expected primary-expression before ‘>’ 
token
         return PySide::Property::setValue(reinterpret_cast<PySideProperty 
*>(pp.object()), self, value);
                                                                            ^

Is this likely to be a problem with my PySide2 build, or do I need to update my 
project's syntax?

Thank you,
Stephen Morris.

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