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

[Andy Lutomirski]

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?

--Andy

>
> Thanks,
>
> jon



-- 
Andy Lutomirski
AMA Capital Management, LLC
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