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On QtCreator, Options, C++, Code Model, General I see the following option

Ignore precompiled headers

And there is a tooltip on mouse hover.

I read about PCH on https://doc.qt.io/qt-5/qmake-precompiledheaders.html, but I would like to know the implications of this checkbox? It says

parsing for code completition
and semantic highlighting
will process the precompiled header before processing any file

enter image description here

KcFnMi
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  • Does this answer your question? [Why use precompiled headers (C/C++)?](https://stackoverflow.com/questions/903228/why-use-precompiled-headers-c-c) – phuclv Feb 15 '21 at 10:09
  • [Precompiled headers](https://stackoverflow.com/q/4954167/995714), [Why use precompiled headers (C/C++)?](https://stackoverflow.com/q/903228/995714), [Precompiled Headers? Do we really need them](https://stackoverflow.com/q/1138301/995714) – phuclv Feb 15 '21 at 10:11
  • No. These links are about the pros/cons of PCH, question is about that checkbox on QtCreator. – KcFnMi Feb 15 '21 at 10:38

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