Re: [Qemu-devel] [RFC PATCH 0/4] per-object libraries

[Paolo Bonzini]

Il 30/06/2013 17:36, Michael Tokarev ha scritto:
> 30.06.2013 19:28, Andreas Färber wrote:
>> Am 18.06.2013 19:34, schrieb Michael Tokarev:
>>> The following working patchset demonstrates a one step to plugins system:
>>> it moves various dependent libraries and stuff out from libs_softmmu or
>>> libs_tools to object-specific variables.
>>
>> We did have a more elaborate Makefile variable system before, but Paolo
>> stashed most of that into common-obj-y and obj-y for simplicity.
> 
> I don't understand.  I for one like to see a plugins system used in qemu,
> and except of the build system everything else is easy (and even nice,
> there's even no need to load all plugins at startup as was initially
> suggested).  But for this to work, we really need to separate libs
> used only by plugins from the main lot, -- or else there's just no
> reason to build plugins in the first place.

Right.

What used to be there was something like

   net-obj-y = foo.o bar.o
   common-obj-y += $(addprefix net/, $(net-obj-y))

and this has been replaced by net/Makefile.objs and friends.

This should not be undone, but it is completely different from what you
are trying to do.  You need a much more fine-grained assignment of
libraries to object files.

I think the build system parts are hard because we haven't found the
right design.

> So, are you saying we should abandom this whole idea?  Or that maybe
> Paolo dislikes it (I think he expressed his interest here too)?

Absolutely not!

Paolo