Re: [PATCH] Documentation/vDSO: don't build tests when cross compiling

From: Andy Lutomirski
Date: Mon Jun 22 2015 - 13:02:14 EST

On Mon, Jun 22, 2015 at 9:41 AM, Jonathan Corbet <corbet@xxxxxxx> wrote:
> On Sat, 20 Jun 2015 21:10:28 -0400
> Paul Gortmaker <paul.gortmaker@xxxxxxxxxxxxx> wrote:
>> The following was seen in linux-next build coverage, which is somewhat
>> unique since it uses powerpc host to cross compile x86:
>> Documentation/vDSO/vdso_standalone_test_x86.c:49:2: error: impossible
>> register constraint in 'asm'
>> make[4]: *** [Documentation/vDSO/vdso_standalone_test_x86.o] Error 1
>> It probably makes sense to just skip building these tests when
>> we are cross compiling.
> So I guess I'm not totally averse to applying these; getting rid of build
> errors is a good thing. But I do get the feeling like it's papering over
> the real problem. As a general rule, cross-compiling works; what's
> special about these programs that makes it fail?

Agreed. What gcc version is this?


> Thanks,
> jon

Andy Lutomirski
AMA Capital Management, LLC
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
Please read the FAQ at