Re: RFC: Testing for kernel features in external modules

[Gerd Knorr]

Andreas Dilger <adilger@xxxxxxxxxxxxx> writes:

> Ideally, when people make an incompatible kernel API change like this
> they would just #define HAVE_REMAP_PAGE_RANGE_VMA in the header that
> declares remap_page_range() directly (e.g. KERNEL_AS_O_DIRECT was added
> for this reason) instead of external builds having to figure this out
> themselves.  Adding the check script is no less work than just adding
> the #define to the appropriate header directly.

I fully agree here, just having #defines for kernel features (which
can't be detected otherwise) is much easier.

  Ge- "#define HAVE_V4L2 1" rd

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