Q: library dependencies

Hello, I'm working on an autotools-based
build system and finally decided to look into these messages:

CXXLD libtop.la

copying selected object files to avoid basename conflicts...

It looks like libtool links (copies?) .o files when it finds a
dupe in the dependency DAG. Here is the situation I have w.r.t.
the dependencies:

libtop.la: liba.la, libx.la

liba.la: libb.la libc.la libx.la

All these libraries are static, noinst_LILIBRARIES and the
dependencies are expressed via _LIBADD syntax:

libtop_la_LIBADD = liba.la libx.la

I do this to get transitive dependencies where the top-level
executable just needs to link to link libtop.la.

I think the issue is with libx.la as it is present in two
different branches of the dependency DAG. This kind of thing is
common in large projects and seems strange that libtool is trying
to be smart about it.

Is there a way to tell automake/libtool to disable this copying
and just do straightforward linking? I wonder if the current
behavior results in unnecessary bloat?.. Or perhaps I am saved by
the linker that would dedup?

Could someone clarify how this is supposed to work for large
projects please?

Thanks!

Oleg.