[Development] Using '#pragma once' instead of include guards?

[Robert Griebl]

On 10.10.2022 12:07, Eike Ziller via Development wrote:
>>  From what I see, it should in practice be ok to use. But perhaps I’m missing something. Does anything speak against using ‘#pragma once’ in new files?
> 
> Just for reference, we are using it without issues in Qt Creator since 2016.
> 
> (But of course our platform and compiler requirements are more restricted than for Qt.)

The same is true for the Pelagicore/Qt ApplicationManager: this project 
started in 2014 and only ever used "#pragma once" since, and we kept 
that even when it became an official Qt module.

No problems whatsoever, neither with qmake or cmake.

cu
Robert