Re: autoconf stalls while checking "atomic builtins for 64 bit data types"
On 2017-09-26, at 5:24 PM, Christoph Biedl wrote:
>> The sync operations for double word operations were introduced in gcc on
>> 2014-11-21.
>> These require kernel support. I suspect the stalls occur because your
>> kernel is too old and
>> doesn't support double-word atomics.
>
> Didn't think of such a thing, and indeed I'm running my own kernel,
> currently 4.9 and 4.13.
4.9.51 has the new lws impletation with 64-bit support. Don't know about all 4.8 versions. Are you running 64-bit
kernel? 32-bit kernels use slightly different code. Your stripped test passes on bell (mx3210). It runs 64-bit kernels.
Dave
--
John David Anglin dave.anglin@bell.net
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