Re: [PATCH linux-next] Documentation: mic: mpssd: Disable mpssd builds for kernels < 3.13

From: Andrew Morton
Date: Tue Sep 23 2014 - 20:51:42 EST


On Tue, 23 Sep 2014 19:47:11 -0400 Peter Foley <pefoley2@xxxxxxxxxxx> wrote:

> On Tue, Sep 23, 2014 at 7:38 PM, Andrew Morton
> <akpm@xxxxxxxxxxxxxxxxxxxx> wrote:
> > This build error is caused by compiling mpssd prior to `make
> > headers_install'.
> >
> > There's really no reason to check the kernel version. If someone
> > transplants mpssd out of its distributed kernel and into some older
> > kernel then a miscompile is their problem - their backport is
> > incomplete.
>
> I've only noticed this error when running make Documentation/,
> in which case gcc silently uses the headers from the system,
> since the headers_install ones don't exist yet.
>
> Maybe having the build error out in this case instead of having mysterious
> compile errors would be a better solution?
>

Can't we just fix the Makefiles? Cook up a rule which makes
headers_install (if needed) before building Documentation/?
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