[libvirt] libvirt can't get capablities

[Osier Yang]

On 2012年07月03日 01:07, Christophe Fergeau wrote:
> On Mon, Jul 02, 2012 at 05:56:35PM +0800, Osier Yang wrote:
>> I'm wondering if we should force to require yajl-devel if build with
>> "with-qemu", as without yajl-devel, it can't do much work with new
>> qemu now.
>
> Something like this ? ;)
>

Yes, exactly.

> commit 350583c859deaaddc98d7319e1c2ad649e4d3e83
> Author: Eric Blake<eblake at redhat.com>
> Date:   Wed Jun 13 10:09:39 2012 -0600
>
>      build: hoist qemu dependence on yajl to configure
>
>      Commit 6e769eba made it a runtime error if libvirt was compiled
>      without yajl support but targets a new enough qemu.  But enough
>      users are hitting this on self-compiled libvirt that it is worth
>      erroring out at compilation time, rather than an obscure failure
>      when trying to use the built executable.
>
>      * configure.ac: If qemu is requested and -version works, require
>      yajl when qemu version is new enough.
>      * src/qemu/qemu_capabilities.c (qemuCapsComputeCmdFlags): Add
>      comment.