linux-kernel - Re: [git pull] check headers fix.

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Message-ID: <CAKMK7uGrCis5B9b+Sr4E0hHFFbdWm3wb-_5hMA24cgviOUnH5Q@mail.gmail.com>
Date:	Tue, 24 May 2016 12:12:42 +0200
From:	Daniel Vetter <daniel@...ll.ch>
To:	Jani Nikula <jani.nikula@...ux.intel.com>
Cc:	Christoph Hellwig <hch@...radead.org>,
	Dave Airlie <airlied@...ux.ie>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	DRI mailing list <dri-devel@...ts.freedesktop.org>
Subject: Re: [git pull] check headers fix.

On Tue, May 24, 2016 at 11:52 AM, Jani Nikula
<jani.nikula@...ux.intel.com> wrote:
> On Tue, 24 May 2016, Christoph Hellwig <hch@...radead.org> wrote:
>> On Tue, May 24, 2016 at 07:29:25AM +0100, Dave Airlie wrote:
>>>
>>> Hi Linus,
>>>
>>> here is the C++ guards warning fix from Arnd.
>>
>> So why the hell do we have C++ guards in kernel headers?
>
> uapi headers. See [1] for the cover letter to the patches with
> rationale.

Short summary: We want to directly reuse the headers generated by make
headers_install for the userspace side of gpu drivers, and at least
some driver teams use C++ for the compilers in there.
-Daniel
-- 
Daniel Vetter
Software Engineer, Intel Corporation
+41 (0) 79 365 57 48 - http://blog.ffwll.ch