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From: Sven Eckelmann <sven@narfation.org>
Date: Tue, 18 Oct 2016 13:34:29 +0200
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Subject: Re: [B.A.T.M.A.N.] [next, v2,
	01/11] batman-adv: Introduce compat-patches support
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On Sonntag, 9. Oktober 2016 08:57:28 CEST Sven Eckelmann wrote:
> compat-includes/compat.h can usually be used to solve compatibility
> problems with older kernels. This works well for functions, defines/enums
> and sometimes even structures that were introduced.
> 
> But this can fail when structs changed. Some of these can be solved in
> crude ways but sometimes it is unavoidable to have a version specific code.
> Unfortunately, this kind of code is not acceptable in the kernel and thus
> the compat infrastructure of the external module has to do add it
> automatically before the source is compiled.
> 
> This process works by creating a build directory which is prefilled with
> the source from net/batman-adv/. The patches from compat-patches/ will be
> applied on top of this copy and then the code is compiled.
> 
> Signed-off-by: Sven Eckelmann <sven@narfation.org>
> ---
> v2:
>  - no change
> ---
>  .gitignore              | 10 ++++------
>  Makefile                | 31 +++++++++++++++++++++++++++----
>  compat-patches/README   | 23 +++++++++++++++++++++++
>  compat-sources/Makefile |  6 +++---
>  4 files changed, 57 insertions(+), 13 deletions(-)
>  create mode 100644 compat-patches/README

Applied in 66ac14a09445b6066de6a8ae4382d8f981466ae3 [1].

Kind regards,
	Sven

[1] https://git.open-mesh.org/batman-adv.git/commit/66ac14a09445b6066de6a8ae4382d8f981466ae3
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