On Tue, Apr 12, 2016 at 10:31 PM, Jim Fehlig <jfeh...@suse.com> wrote: > Wei Liu wrote: >> Hi libvirt maintainers, > > Sorry for the delay. Slowly catching up on mail after vacation... > >> >> Xen's control library libxenlight (libxl) requires application >> (libvirt in this case) to explictily define LIBXL_API_VERSION. > > Where is this requirement written? :-) > >> This is >> lacking at the moment so libvirt's libxl driver always gets the latest >> APIs. > > IMO, that is what we want for upstream libvirt. Downstreams can choose a > specific version if they want.
I think one of us isn't understanding the situation properly. Is it not the case that currently, all releases of libvirt *will not compile* against Xen 4.7 once it's released? So people downloading and building libvirt will have to either 1) root around and try to figure out what version of Xen it will build against, 2) manually add in a #define *with the correct API version* to a header somewhere to make it build properly, or 3) update to a version of libvirt that supports the new api (which at the moment hasn't even been released yet)? All of those options are completely unacceptable. Older versions of libvirt should Just Work when compiled against newer versions of Xen. I think it does make sense to have the libvirt development branch not specify an API version; but when it branches for release, it should set LIBXL_API_VERSION to whatever the current version is at the time of the branch. -George _______________________________________________ Xen-devel mailing list Xen-devel@lists.xen.org http://lists.xen.org/xen-devel
