Re: linux-next: Tree for Mar 31 (build failures and culprits)

[Guenter Roeck]

On 03/31/2015 04:24 PM, Michael Ellerman wrote:
> On Wed, 2015-04-01 at 01:07 +0200, Greg Kroah-Hartman wrote:
> > On Tue, Mar 31, 2015 at 09:16:40AM -0700, Guenter Roeck wrote:
> > > alpha:allmodconfig
> > > mips:allmodconfig
> > >
> > > samples/kdbus/kdbus-workers.c: In function âprime_newâ:
> > > samples/kdbus/kdbus-workers.c:930:18: error: â__NR_memfd_createâ undeclared
> > > (first use in this function)
> > >    p->fd = syscall(__NR_memfd_create, "prime-area", MFD_CLOEXEC);
> > >
> > > Looks like the kdbus example never worked for the affected architectures.
> > > I don't build allmodconfig for all architectures, so other architectures
> > > may be affected as well.
> >
> > You need 3.17 kernel headers to have memfd_create, not much the kdbus
> > test code can do about that.  You might want to update the kernel
> > headers for these build boxes.
>
> Or just 'make headers_install' before building the samples should do it.

Sure, that works so well in a cross build environment.

Guenter

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