[FFmpeg-devel] Does i686 have MMX?

[Jason Garrett-Glaser]

2010/8/26 M?ns Rullg?rd <mans at mansr.com>:
> Alex Converse <alex.converse at gmail.com> writes:
>
>> 2010/8/26 M?ns Rullg?rd <mans at mansr.com>:
>>> Jason Garrett-Glaser <darkshikari at gmail.com> writes:
>>>
>>>> The issue is simple:
>>>>
>>>> 1. ?People use --cpu on x86 to mean "it should run on at least this
>>>> CPU, and contain optimizations for all better CPUs".
>>>
>>> Are you aware of the contradiction in that statement?
>>
>> please elaborate
>
> "Optimisations for better CPUs" might not run on "this CPU". ?Thus, if
> the code "contains" such optimisations, it might not run, yet running
> was a requirement.

Runtime detection exists for a reason.  Don't be obtuse.

Dark Shikari