64bit build errors

Tom Evans tevans.uk at googlemail.com
Wed Dec 7 12:17:58 UTC 2011

On Wed, Dec 7, 2011 at 11:47 AM, Da Rock
<freebsd-hackers at herveybayaustralia.com.au> wrote:
> I really hate sounding like an idiot, but if I don't ask I'll never know:
> The assembler in base is not up-to-date with the latest instruction sets for
> the cpu, and is causing an error because its telling the cpu to do something
> it doesn't understand and is going WTF! So the port binutils provides the
> latest instruction sets for the latest cpus. And ffmpeg and friends use the
> latest cpu abilities to run as fast as they do? Right or way off? Otherwise
> I'd have problems building anything, wouldn't I?

The way I understand it is that they use compiler/assembler features
that did not exist in the version of binutils that is in base.

That might be related to CPU features - I know you need binutils from
ports to use SSE3 features, for example - but whether that is what
happens here, or whether it is due to ffmpeg using newer features
would have to be answered by someone who understands what is going on!



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