How to force include a header file

[ChrisW67]

I'm using MinGW 4.7 and when I do QMAKE_CXXFLAGS += /FI"customTypes.h", it's saying, error: No such file or directory.
But I've included that header file path in INCLUDEPATH.
What do I do now? Thank you for the reply.

It may have helped to have mentioned that you were not using the Microsoft compiler. As it stands at the moment the compiler is probably complaining because there is no file called literally '/FI"customtypes.h"': even cursory inspection of existing command lines or the manual would have highlighted that "/" does not introduce a command line switch to GCC.

GCC has an equivalent switch that can be found with less than three minutes and the GCC manual:

-include "someobscurefilethatisboundtobelost.h"

-include "someobscurefilethatisboundtobelost.h"

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Make sure read about where the compiler will be looking for someobscurefilethatisboundtobelost.h.

The correct approach is to fix your source code, not to try and fudge it with obscure compiler options.