versioning of _Unwind_*() symbols

[David Mosberger]

>>>>> On Thu, 22 Apr 2004 19:34:26 -0400, Daniel Jacobowitz <drow@false.org> said:

  Daniel> On Thu, Apr 22, 2004 at 04:15:12PM -0700, H. J. Lu wrote:
  >> On Thu, Apr 22, 2004 at 03:12:32PM -0700, David Mosberger wrote:
  >> > >>>>> On Thu, 22 Apr 2004 15:02:15 -0700, "H. J. Lu" <hjl@lucon.org> said:

  >> >   HJ> BTW, since the ABI library is more than just unwind library. We
  >> >   HJ> can't use David's unwind library as is.

  >> > You can.  Just list -lunwind as a dependency as is done now with libgcc_s.
  >> I don't think it will work AS IS since linker may add libunwind.so to
  >> DT_NEEDED if it is used. A new linker option may be needed to work
  >> with it.

  Daniel> Are you sure that that will happen?  I don't think so.

I think HJ is right.  I did try with an older GCC release that was
built with libunwind enabled.  The unwind library showed up as a
dependency of the executable even though the linker command line did
not specify -lunwind explicitly.  Perhaps it's a linker bug?

	--david