From: Guenter Roeck <linux@roeck-us.net>
To: Michael Ellerman <mpe@ellerman.id.au>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Stephen Rothwell <sfr@canb.auug.org.au>,
linux-next@vger.kernel.org, linux-kernel@vger.kernel.org,
Tony Lindgren <tony@atomide.com>, Felipe Balbi <balbi@ti.com>,
Ard Biesheuvel <ard.biesheuvel@linaro.org>,
Russell King <rmk+kernel@arm.linux.org.uk>,
Arnd Bergmann <arnd@arndb.de>,
Lad@roeck-us.net, Prabhakar <prabhakar.csengg@gmail.com>,
Thomas Gleixner <tglx@linutronix.de>,
Daniel Mack <daniel@zonque.org>,
Mikko Perttunen <mperttunen@nvidia.com>,
Thierry Reding <treding@nvidia.com>
Subject: Re: linux-next: Tree for Mar 31 (build failures and culprits)
Date: Tue, 31 Mar 2015 20:13:19 -0700 [thread overview]
Message-ID: <551B624F.9030808@roeck-us.net> (raw)
In-Reply-To: <1427857291.4256.8.camel@ellerman.id.au>
On 03/31/2015 08:01 PM, Michael Ellerman wrote:
> On Tue, 2015-03-31 at 19:18 -0700, Guenter Roeck wrote:
>> 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 ‘prime_new’:
>>>>> samples/kdbus/kdbus-workers.c:930:18: error: ‘__NR_memfd_create’ 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.
>
> Well yeah it does, I do it all the time.
>
> But what you mean is that the samples are built with HOSTCC, so having the
> cross headers doesn't help.
>
> The real problem here is samples, they shouldn't be built with the kernel, they
> should be a separate thing, like the selftests.
>
I "solved" the problem by disabling CONFIG_SAMPLES in my alpha and mips
builds.
FWIW, I think (suspect) that the samples builder does the equivalent
of "make headers_install" as part of the build process, but I don't
have time to track it down.
Guenter
next prev parent reply other threads:[~2015-04-01 3:13 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-03-31 13:02 linux-next: Tree for Mar 31 Stephen Rothwell
2015-03-31 16:16 ` linux-next: Tree for Mar 31 (build failures and culprits) Guenter Roeck
2015-03-31 23:07 ` Greg Kroah-Hartman
2015-03-31 23:24 ` Michael Ellerman
2015-04-01 2:18 ` Guenter Roeck
2015-04-01 3:01 ` Michael Ellerman
2015-04-01 3:13 ` Guenter Roeck [this message]
2015-03-31 23:42 ` Stephen Rothwell
2015-04-01 2:24 ` Guenter Roeck
2015-04-01 2:45 ` Guenter Roeck
2015-04-01 6:13 ` Daniel Mack
2015-04-01 2:17 ` Guenter Roeck
2015-04-01 8:08 ` Russell King - ARM Linux
2015-04-01 12:23 ` Guenter Roeck
2015-04-01 3:16 ` Max Filippov
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