17.06.2019, 18:43, "Thiago Macieira" <[email protected]>: > On Monday, 17 June 2019 08:16:38 PDT Konstantin Tokarev wrote: >> 17.06.2019, 18:15, "Thiago Macieira" <[email protected]>: >> > On Monday, 17 June 2019 02:52:03 PDT Konstantin Tokarev wrote: >> >> I think that automatic generation of PCH is a bad idea, leading to >> >> wasting >> >> build time. >> > >> > Like we do in Qt today? >> >> Yep. Approach of Qt Creator is much better. > > Elaborate, please.
Qt Creator uses manually crafted precompiled header files [1,2], which include only those headers which are often used across the project. If you pull all public headers of used Qt modules into pch like it was a kitchen sink, you spend a lot of extra time precompiling stuff which wiould be used once or twice. It also increases size of binary representation of PCH, and might make compilation slower because compiler now has to do lookups in larger AST. [1] https://code.qt.io/cgit/qt-creator/qt-creator.git/tree/src/shared/qtcreator_pch.h [2] https://code.qt.io/cgit/qt-creator/qt-creator.git/tree/src/shared/qtcreator_gui_pch.h -- Regards, Konstantin _______________________________________________ Development mailing list [email protected] https://lists.qt-project.org/listinfo/development
