Re: [PATCH libnetfilter_queue v2] src: Stop users from accidentally using legacy linux_nfnetlink_queue.h

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On Fri, Aug 06, 2021 at 12:15:13PM +1000, Duncan Roe wrote:
> If a user coded
>   #include <libnetfilter_queue/libnetfilter_queue.h>
>   #include <linux/netfilter/nfnetlink_queue.h>
> then instead of nfnetlink_queue.h they would get linux_nfnetlink_queue.h.
> In the library, this only affects libnetfilter_queue.c

Emit a warning to deprecate linux_nfnetlink_queue.h (which is a copy
of the original nfnetlink_queue.h), users instead should be using

To ensure that a project compiles standalone (without the need for the
system kernel header files), you can cache a copy of the header in
your software tree (we use this trick for a while in userspace
netfilter software).

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