Re: [Qemu-devel] [PATCH] libcacard: add libcacard.la target

[Alon Levy <alevy@redhat.com>]

On Mon, May 16, 2011 at 04:44:03PM +0200, Paolo Bonzini wrote:
> On 05/16/2011 07:37 PM, Alon Levy wrote:
> >I've settled on libtool
> >as the linker solution since it seems to be the de facto standard, please
> >correct me on this point if I'm wrong. We are not using autoconf, so
> >I've called it directly in it's various modes, compile, link and install.
> 
> I agree.  I don't dislike this particularly :) if at all.
> 
> >Legitemacy of the warning: basically libtool is concerned about linking in position
> >dependant code. But the trace-dtrace.o contains no .rodata section and is not actually
> >a problem for the linker, I've verfied the resulting library works fine with spicec (the
> >spice client using it).
> 
> I'm not sure, however, that glibc would still keep the sharing of .text.
> 

I'll check.

> >I'd appreciate any suggestion of a replacement for libtool if it is not appropriate.
> >Note that this building of a shared library is not something new - we've talked about
> >this before in relation to libcacard inclusion inside qemu git repository.
> 
> Do you really need tracing besides as a dependency of qemu_malloc?
> Perhaps you can recompile qemu-malloc.o specially for libcacard, and
> force usage of the nop backend.

Sounds like a very good idea for short term. Otoh if I'm already building libcacard
with qemu dependencies, it would be nice if I could benefit from the tracing framework.

I'll investigate building trace-dtrace.lo and if this doesn't work I'll try nop backend.

> 
> Paolo
>