Why "unknown"?

[Mike Sharov]

Why does config.guess prints "unknown" instead of "pc" for PCs?
For example, my athlon64 system always gets x86_64-unknown-linux-gnu
(which is hardcoded in config.guess exactly like that), while my
slackware distribution compiles gcc and the like with
x86_64-pc-linux-gnu, which is not only shorter and less inspiring of
confusion in users scratching their head wondering what "unknown" means,
but is more appropriate, since on pcs it doesn't matter who the vendor
is. Some other triplets already use -pc-, so wouldn't it be a good idea
to make it the default? Or, at least, try to get it from some definable
location so I wouldn't have to specify --build=x86_64-pc-linux-gnu every
time I run configure, which is a lot.
-- 
Mike
address@hidden