[libvirt] OSX Homebrew support note ;)

[Roman Bogorodskiy]

  Justin Clift wrote:

> On 23 Jan 2017, at 11:38, Daniel P. Berrange <berrange at redhat.com> wrote:
> > On Wed, Dec 21, 2016 at 09:55:53AM +0000, Justin Clift wrote:
> <snip>
> > 
> > I'm looking at (what I hope is the correct) configuration file for the
> > build:
> > 
> >  https://github.com/Homebrew/homebrew-core/blob/master/Formula/libvirt.rb
> 
> Yep, that's the right one.
> 
> > and see '--without-qemu' being passed - what is the reason for that ? It
> > looks like you're building libvirtd, so enabling QEMU thereafter should
> > not have any significantly difficulties. Certainly we expect the QEMU
> > driver code to be platform agnostic - all the Linux specific bits are
> > believed to be wrapped in conditionals.
> > 
> > IOW if you see build errors with QEMU on OS-X could you tell us what they
> > are.
> 
> From memory (it's been a few years!), it was because the QEMU that builds
> in Homebrew wouldn't talk to Libvirt anyway.  So it was useless to add the
> support in.
> 
> That being said, I do remember someone mentioning they should probably
> worth together ok these days.  But, I'm not sure if anyone's checked
> and/or really tried to make it work.

Well, at least it builds the qemu driver successfully, maybe later I'll
check if it could actually run a VM.

> > We'd really want to see the QEMU driver enabled
> 
> Yep, it sounds like it'd be a useful combination.  As would xhyve, if
> that could somehow use the bhyve support (I have no idea). :)

I think it won't work as is, but quite probably a fair amount of the
bhyve code could be reused (probably with some refactoring).

Roman Bogorodskiy
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