Okay, I wasn't expecting to be wrestling with C++ builds; my language of choice is Golang! But, so far, I've had to make the following changes...
Added the `openssl` folder to the Headers section of the project in QT Creator
Added the `dialog_export.ui` to polyphone [master] -> Forms -> dialogs
My progress has now ground to a halt. The `dialog_export.ui` file added to the projetct okay, but now I am getting a whole host of errors...
I haven't shown all of the errors because instinct tells me that that one simple change will sort out most/all of the 48 issues currently plaguing my life. I expect that there will be more issues just waiting to pop up but I am stuck for the moment, unless some bright spark can rescue me!