Re: [libvirt] Adding VirtualBox support to libvirt

["Daniel P. Berrange" <berrange redhat com>]

On Thu, Feb 26, 2009 at 11:52:18AM -0500, John Levon wrote:
> On Thu, Feb 26, 2009 at 05:00:47PM +0100, Pritesh Kothari wrote:
> 
> > > I think it depends on exactly how you are doing it - best to just post the
> > > patches and we can discuss whether it looks reasonable then. Why did you
> > > dlopen() instead of just linking to it directly ?
> > 
> > Basically my code depends on three libraries used in virtualbox namely: 
> > VBoxXPCOMC.so, VBoxRT.so, VBoxXPCOM.so and if i link to them then these
> > dependencies would trickle down to other programs as well, for example:
> > virsh would need to be relinked, for that matter any program who depends on 
> > libvirt with virtualbox support compiled in it would need to be relinked. so 
> > currently i am trying to make as minimal change to any of the libvirt files 
> > as possible and restrict my code to the following 6 files: vbox_driver.c/h 
> > and vbox_conf.c/h. I am not sure if this approach is valid?
> 
> Perhaps you want to enable DRIVER_MODULES, which uses dlopen to open
> individual drivers. That way you don't need to dlopen the vbox modules,
> but libvirt apps don't need to know about them.

Even without the DRIVER_MODULES setting, you can setup the Makefile.am
rules so that it is only linked into the libvirtd daemon and not in the
main libvirt.so.  Take a look at the qemud/Makefile.am and src/Makefile.am
files and what they do with libvirt_driver_qemu.la


Regards,
Daniel
-- 
|: Red Hat, Engineering, London   -o-   http://people.redhat.com/berrange/ :|
|: http://libvirt.org  -o-  http://virt-manager.org  -o-  http://ovirt.org :|
|: http://autobuild.org       -o-         http://search.cpan.org/~danberr/ :|
|: GnuPG: 7D3B9505  -o-  F3C9 553F A1DA 4AC2 5648 23C1 B3DF F742 7D3B 9505 :|