[FFmpeg-devel] [PATCH] Fix configure to disable MMX for Pentium Pro

[Alex Converse]

2010/8/26 M?ns Rullg?rd <mans at mansr.com>:
> Janne Grunau <janne-ffmpeg at jannau.net> writes:
>
>> On Thu, Aug 26, 2010 at 01:52:22AM -0400, Jason Garrett-Glaser wrote:
>>> On Thu, Aug 26, 2010 at 12:44 AM, Eli Friedman <eli.friedman at gmail.com> wrote:
>>> > Attached. ?This is essentially fixing an oversight in r21277.
>>> >
>>> > -Eli
>>>
>>> This means every distro who uses --cpu=i686 or similar will silently
>>> have their ffmpeg crippled the next time they make a build.
>>>
>>> I would rather roll back r21277 than apply this patch.
>>
>> What about requriring --enable-runtime-cpudetect for i686 with mmx and
>> crippling emms() in that case like attached patch?
>
> I'm not changing a thing until someone shows me evidence of ffmpeg
> actually being used on such CPUs.
>

We shouldn't claim to support something that doesn't work.