[OE-core] [PATCH] curl: build with c-ares library support.

[Phil Blundell]

On Tue, 2013-11-12 at 14:41 -0800, Saul Wold wrote:
> Additionally, if adding this to oe-core, it needs to be in it's own 
> patch crediting the orignal author / layer, I found a 1.10 version in 
> the meta-webos-ports, is this where it came from?

There is a c-ares recipe in oe-classic which looks quite similar to this
one and I suspect that's probably where it came from (though perhaps
indirectly).

But, configuring curl to use c-ares support is not as trivial a change
as it might appear and there is a significant chance that it will cause
unforeseen (and probably unwanted) effects for at least some people.
Adding a PACKAGECONFIG option for it which defaults to off would
obviously be fine, and changing the default to be the libcurl internal
threaded resolver (which would probably fix the original complaint as
well, and doesn't require any extra recipes) might also be fine, but
enabling c-ares by default is not something that should be done
capriciously.

p.