Re: Clojure versioning

[Peter Collingbourne <peter@pcc.me.uk>]

On Sun, Aug 22, 2010 at 10:23:58PM +0530, Ramakrishnan Muthukrishnan wrote:
> On Sun, Aug 22, 2010 at 3:04 AM, Peter Collingbourne <peter@pcc.me.uk> wrote:
> > Hi,
> >
> > I am in the process of packaging Clojure 1.2 for Debian.  While
> > doing so, I noticed that Clojure 1.1 AOT compiled packages, such as
> > clojure-contrib, won't work with 1.2.  This led me to discover that
> > AOT compiled packages are in general not guaranteed to work between
> > Clojure versions.  The way I see it we have two possible solutions:
> >
> > 1) Do nothing.  This would essentially mean all clojure libraries would
> >   need to move in lockstep with the clojure package.
> 
> As I understand it, this is a problem only for gen-class'ed
> namespaces. clojure-contrib has a few. But many libraries never AOT
> compile for precisely the same reason.

If a library/app B needs AOT and depends on a library A which is not
AOT compiled, what does the linkage look like from B to A?  Is it a
direct call?  IOW, what happens if B is called using a gen-class'd
class and calls A?  Is A automatically JIT compiled?

Thanks,
-- 
Peter