https://sourceware.org/bugzilla/show_bug.cgi?id=27441
Alan Modra <amodra at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |ASSIGNED
Assignee|unassigned at sourceware dot org |amodra at gmail dot com
--- Comment #8 from Alan Modra <amodra at gmail dot com> ---
(In reply to Michael Matz from comment #3)
> % gcc -fPIC -Wl,--as-needed -fno-lto -shared -o good.so bad4.c -L. -l2 -l1
> % readelf-dW good.so | grep lib
> 0x0000000000000001 (NEEDED) Shared library: [lib2.so]
> 0x0000000000000001 (NEEDED) Shared library: [lib1.so]
I'd actually like to fix the above to *not* have DT_NEEDED lib2.so. The reason
is that as-needed was supposed to be modeled on the way archive entries are
treated, and if you were using static libraries you'd find the weak func1 in
lib2.a would not be enough to cause lib2.o to be extracted.. Unfortunately I
can't do that, libm.so.6 for instance is full of weak dynamic symbols. So for
as-needed shared libraries we instead say the library is needed whenever a
non-weak undefined reference is satisfied by the library regardless of whether
the definition is strong or weak.
I guess I need to do the same for plugins.
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