linux-kernel - Re: [PATCH v03 00/98] Userspace compile test and fixes for exported uapi header files

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Date:	Sun, 31 May 2015 07:05:20 +0300
From:	Mikko Rapeli <mikko.rapeli@....fi>
To:	Richard Weinberger <richard.weinberger@...il.com>
Cc:	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v03 00/98] Userspace compile test and fixes for exported
 uapi header files

On Sat, May 30, 2015 at 10:12:48PM +0200, Richard Weinberger wrote:
> On Sat, May 30, 2015 at 5:37 PM, Mikko Rapeli <mikko.rapeli@....fi> wrote:
> > v3:
> > tried to fix all v2 review findings
> > tried to guess how to fix a few more issue
> > with a few hacks, 0 files fail and 760 files pass the compile test on 32bit x86
> >
> > v2:
> > https://lkml.org/lkml/2015/2/16/521
> > added cross compiler support with CROSS_COMPILE,
> > detecting libc and GCC headers from compiler,
> > more header file fixes
> >
> > v1:
> > https://lkml.org/lkml/2014/8/21/665
> >
> > Users of kernel header files would be happier if they did not contain
> > kernel specific parts and would contain #include statements for all
> > other header files that they depend on, and in general would compile.
> 
> Maybe this is a stupid question, but does that mean that many of our uapi
> headers never worked as expected and don't build at all?

Yes. Many uapi headers do not compile in userspace and users of those
headers need to either copy stuff out or do other tricks when including
them. See patch nr 0002 for stats, or https://lkml.org/lkml/2015/5/30/98

-Mikko
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