[Bug lto/49992] lto-bootstrap reveals duplicate symbols on x86_64-apple-darwin11

[howarth at nitro dot med.uc.edu]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49992

--- Comment #24 from Jack Howarth <howarth at nitro dot med.uc.edu> 2011-08-09 15:27:34 UTC ---
Then you will also want to adjust the original toplevel configure change...

Author: mrs
Date: Fri Mar 19 10:19:52 2010
New Revision: 157563

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=157563
Log:
    PR ada/42554
    * configure.ac: Only pass -c to ranlib for darwin9 and earlier.
    * configure: Regenerate.

Modified:
    trunk/ChangeLog
    trunk/configure
    trunk/configure.ac

Extending this patch to gcc/configure[.ac] eliminates the lto-bootstrap
failures from duplicate symbols under darwin11. As for darwin9, do we know that
this change that allows ranlib to look at common symbols in archives has been
backported to the Xcode in darwin9?