Miguel,
Thanks for the Stream->PutBool post. I have incorporated this change and the code now builds using the MSYS2 wxWidgets 3.2 package. Finally got to the end and have been able to run C::B and load all of the plugins. I have not done any testing as it's time to go to bed.
I will check tomorrow if there are any other changes that are relevant as I have been concentrating on getting the build finished and then getting a run-able C::B and plugins.