Re: [PATCH 4/9] raisin: add a component to build qemu_traditional

[Ian Campbell <ian.campbell@citrix.com>]

On Thu, 2015-04-16 at 10:54 +0100, Stefano Stabellini wrote:
> On Thu, 16 Apr 2015, Ian Campbell wrote:
> > On Wed, 2015-04-15 at 18:41 +0100, Stefano Stabellini wrote:
> > > On Wed, 15 Apr 2015, Ian Campbell wrote:
> > > > On Wed, 2015-04-15 at 17:15 +0100, Ian Jackson wrote:
> > > > > Stefano Stabellini writes ("Re: [Xen-devel] [PATCH 4/9] raisin: add a component to build qemu_traditional"):
> > > > > > On Wed, 15 Apr 2015, Ian Campbell wrote:
> > > > > > > (I also think osstest support is a prerequisite for saying it is an
> > > > > > > officially support XenProject thing, but that's offtopic in this
> > > > > > > context)
> > > > > > 
> > > > > > I spoke with IanJ and he didn't seem too keen on adding raisin support
> > > > > > to osstest before raisin could build everything out of tree. That's way
> > > > > > I started tackling qemu and qemu-traditional.
> > > > 
> > > > I see, I had imagined we would prefer a more piecemeal process.
> > > > 
> > > > > I don't mind a hybrid approach.  What I would like is for each
> > > > > subproject to _either_ do the existing thing, or be able to ask raisin
> > > > > about it in advance.
> > > > 
> > > > Isn't that going to be useful/necessary anyway? e.g. as new (i.e.
> > > > completely new, not moving from xen.git) stuff is added and desirable to
> > > > support.
> > > 
> > > The integration process that I envisioned is something like the
> > > following:
> > > 
> > > - Add any missing options to the xen-unstable build system to avoid
> > > cloning and building sub-components, such as qemu, seabios, etc. Many of
> > > these configure options are already there, like --with-system-qemu and
> > > --with-system-ovmf.
> > > 
> > > - build all these components separately in raisin
> > > 
> > > - introduce raisin in osstest
> > > 
> > > - disable by default cloning and building sub-components from xen-unstable
> > > 
> > > / time passes /
> > > 
> > > - remove options to clone and build sub-components from xen-unstable
> > 
> > That makes sense. My final paragraph was asking about the next step,
> > which is adding a completely new component to raisin and integrating it
> > with osstest, wouldn't osstest then need some way to query raisin about
> > what it would clone etc?
> 
> Raisin has a config file to specify what to clone from where and what
> revision it should use:
> 
> http://xenbits.xen.org/gitweb/?p=people/sstabellini/raisin.git;a=blob_plain;f=defconfig;hb=HEAD

But can I _query_ what it is able to build (i.e. the components the
current version supports) and/or what it would actually build if asked
(i.e. the revisions of things).

Ian.