[PATCH] Don't #error if including <altivec.h> without -maltivec

[Segher Boessenkool]

> But "-maltivec" not only enables AltiVec instructions, but also the 
> various
> AltiVec _types_, and I _really_ don't think we want to be synthesizing 
> these
> types unconditionally. :-)

And that is wrong.  The option should do one thing, and one thing only.
If there is a need to disable AltiVec vector types, there should be a
separate option for that.  But I don't see why that would be needed?

>> I actually have some code like that, and it breaks with TOT compiler.
>
> If you want to use "generic" GCC vectors, then you should probably
> use generic syntax for them as well (i.e., 
> __attribute__(size_type(...)))
> or whatever it is this week).

No, I want AltiVec vectors.


Segher