linux-kernel - Re: samples/kdbus/kdbus-workers.c and cross compiling MIPS

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Date:	Fri, 31 Jul 2015 16:54:18 +1000
From:	Michael Ellerman <mpe@...erman.id.au>
To:	Stephen Rothwell <sfr@...b.auug.org.au>
Cc:	Paul Gortmaker <paul.gortmaker@...driver.com>,
	David Herrmann <dh.herrmann@...il.com>,
	David Herrmann <dh.herrmann@...glemail.com>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Daniel Mack <daniel@...que.org>,
	Djalal Harouni <tixxdz@...ndz.org>, linux-mips@...ux-mips.org,
	linux-kernel <linux-kernel@...r.kernel.org>,
	"linux-next@...r.kernel.org" <linux-next@...r.kernel.org>
Subject: Re: samples/kdbus/kdbus-workers.c and cross compiling MIPS

On Fri, 2015-07-31 at 09:55 +1000, Stephen Rothwell wrote:
> Hi Paul,
> 
> On Thu, 30 Jul 2015 11:32:05 -0400 Paul Gortmaker <paul.gortmaker@...driver.com> wrote:
> >
> > Well, it only shows up when we cross compile for mips.  It does not
> > seem to be showing up for any other arch (and we cover ~10 of them).
> > Nor does it show up for x86 builds.  Also note that the main linux-next
> > build machine is actually a PowerPC host.
> 
> Actually I do my linux-next builds on an x86_64 host, and the overnight
> builds are spread between that and a PowerPC host.
> 
> > > Please note that this is HOSTCC running, so it does *NOT* require the
> > > toolchain for your cross-compiled architecture.
> > > 
> > > Also, please tell me why your system has "linux/memfd.h" available,
> > > but __NR_memfd_create is undefined?
> > 
> > My local system is a bog standard ubuntu 14.10 and it sees it.  I dont
> > know what distro the linux-next IBM powerpc builder is based on but it
> > also sees it....
> 
> Our build hosts are running Debian stable and Ubuntu <mumble> (I think -
> I will check on this latter).

The x86 builders are debian:jessie and the ppc one is currently Ubuntu 14.04.2.

cheers



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