On 03/31/2016 05:12 PM, leon zadorin wrote: > Hello and pardon the nativity of question given that I didn't look at > the internals of GCC's precompiled header implementation... > > I am aware that GCC considers a precompiled header file (e.g. x.h.gch) > when looking for a usual, included, header file (e.g. #include "x.h"). > > So the question is: when creating one large precompiled header such as > all.h.gch where all.h #includes x.h, y.h, z.h, etc. -- will GCC be > able to accelerate the process of creating all.h.gch if it sees that > x.h itself already has a precompiled version such as x.h.gch? > > Best regards > Leon. There are others here who know better than I. That said, from this link to gcc docs: https://gcc.gnu.org/onlinedocs/gcc-4.8.5/gcc/Precompiled-Headers.html#Precompiled-Headers , I would say: no. Consider: * Only one precompiled header can be used in a particular compilation. This is the very first bullet in the docs when they discuss restrictions. Andy
