On Tuesday 05 June 2007, Vegard Nossum wrote:
> > You also need to take some care about the gcc arguments that you pass.
> > E.g. passing -DMODULE when building the precompiled header means that
> > you can't use that .pch when you build a file where you don't pass
> > -DMODULE.
>
> So does it make sense to build two precompiled headers (one with
> CFLAGS_KERNEL, one with CFLAGS_MODULE), and then pass -include
> kernel.h.gch and -include module.h.gch for kernel/built-in modules and
> loadable modules, respectively? I think I'll try it out and see how it
> goes.
Yes, that sounds reasonable. But you should check also the other gcc
options, e.g. KBUILD_MODNAME is defined in a different way for every
module. Consequently, you must not include any header that uses
this symbol when building your .gch files.
Arnd <><
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