Re: [Qemu-devel] [PATCH v2] rules.mak: Fix DSO build by pulling in archive symbols

[Fam Zheng <famz@redhat.com>]

On Mon, 09/01 13:07, Peter Maydell wrote:
> On 1 September 2014 13:04, Paolo Bonzini <pbonzini@redhat.com> wrote:
> > Il 01/09/2014 13:46, Peter Maydell ha scritto:
> >> So we could fix this by not compiling empty files...
> >
> > Easy for int128, even easier for getauxval (it's not a fastpath, so we
> > can move the "always return 0" version from include/qemu/osdep.h to
> > util/getauxval.c).
> >
> > I'm not sure how to detect that there generated-tracers.c is empty.
> > Stefan, is it used by anything except $(CONFIG_TRACE_SIMPLE)?
> 
> You could always put in a dummy function that isn't actually
> used by anything.
> 
> >> ranlib doesn't like that either (this one's a warning we've had for
> >> a long time):
> >
> > Given this, do you consider th a blocker for this patch?
> 
> The ranlib warnings are comparatively clear and only happen
> when we link the .a file; the warnings we get out of nm are
> rather uglier and more confusing and produced at every final
> binary link. I'd certainly prefer it if we could fix them, but I
> guess I won't absolutely insist on it.
> 

Thanks both of you for tracking down the problem. Let's add 2>/dev/null to
suppress the warning.

Fam