Re: Dealing with SUBLEVEL overflow in backports

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On 2/10/22 00:44, Hauke Mehrtens wrote:
On 2/8/22 16:51, Jiaxun Yang wrote:

在 2022/2/8 15:02, Johannes Berg 写道:
On Tue, 2022-02-08 at 14:50 +0000, Jiaxun Yang wrote:
Ah I tried this approach but find that this may break other modules
depending on our headers because the cflag won't come with be
inherited by them.

Hm. I thought about if that could happen, but decided not? We only
compile C files in backports, which other parts would break?

For example OpenWRT compiles mac80211 purely from backports.

So for other out-of-tree wireless drivers they have to include headers
provided by backports, but they can't recieve cflags from our makefile.

So it will leave those macros undefined ad led to problems.

- Jiaxun



What build problem do you get when you include "#include <linux/bug.h>" here on kernel 4.9.299? Can we somehow work around this problem by detection the kernel version in a different way based on a different define?


OpenWrt does not use kernel 4.9 any more, we could also drop the support for some external modules using backports on such old kernel versions.

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