Invalid Conversion: _handlers.write_property = &ClassImpl::writeProperty;

[VBruceHunt]

Occurs in zend/classimpl.cpp:358:32. Compiling on Raspberry PI 4 with 4GB using g++ version (Raspbian 8.3.0-6+rpi1) 8.3.0. Here is the error:
zend/classimpl.cpp: In member function ‘zend_object_handlers* Php::ClassImpl::objectHandlers()’: zend/classimpl.cpp:358:32: error: invalid conversion from ‘void (*)(zval*, zval*, zval*, void**)’ {aka ‘void (*)(_zval_struct*, _zval_struct*, _zval_struct*, void**)’} to ‘zend_object_write_property_t’ {aka ‘_zval_struct* (*)(_zval_struct*, _zval_struct*, _zval_struct*, void**)’} [-fpermissive] _handlers.write_property = &ClassImpl::writeProperty; ^~~~~~~~~~
Note that a simple cast is missing. The following change on line 358 corrects the error:
_handlers.write_property = (zend_object_write_property_t) &ClassImpl::writeProperty; //vbh21114

[VBruceHunt]

Corrections as shown in issues 473 and 474 allows the make to complete albeit with several warnings using g++ version (Raspbian 8.3.0-6+rpi1) 8.3.0 against PHP 7.4.14 on a Raspberry PI 4 with 4GB.