[Development] Porting QT to new OS

[Ulf Hermann]

>> Yes, POSIX compliant base including pthreads and filesystem API. What the
>> filesystem API accesses is irrelevant, it just has to exist. Threading 
>> support
>> is mandatory in Qt, even though there are #ifndef QT_NO_THREAD around. 
>> Those
>> aren't tested and aren't guaranteed to even compile. You can try that at
>> first, but I recommend aiming for full threading.
> 
> Actually, QtWebAssembly platform is a supported platform and default is 
> nothread. :) What is not tested is nothread on a different platform like 
> desktop.

And QT_NO_THREAD is wrong. There is a feature for this:

#if QT_CONFIG(thread)

br,
Ulf