Add an --extract-symbol option to objcopy

[H. J. Lu]

On Thu, Mar 01, 2007 at 01:00:13PM +0000, Richard Sandiford wrote:
> This is unfortunately one of those patches that is being submitted
> upstream long after it has been used in the wild (namely for VxWorks).
> I don't know how far back it dates, or who came up with the option
> specification originally.
> 
> The test needs to assemble something _and_ link it.  No binutils test
> seems to do that at the moment, so I added support to run_test.

Please see

ld/testsuite/ld-elf/binutils.exp

Linker isn't supported for all targets. If the newly built linker
is used, the test should go into ld/testsuite.

H.J.