[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 #1 from Jack Howarth <howarth at nitro dot med.uc.edu> 2011-08-05 17:12:16 UTC ---
  $ ../gcc-4.7-20110805/configure --prefix=/sw --prefix=/sw/lib/gcc4.7
--mandir=/sw/share/man --infodir=/sw/lib/gcc4.7/info
--with-build-config=bootstrap-lto --enable-stage1-languages=c,lto
--enable-languages=c,c++,fortran,lto,objc,obj-c++,java --with-gmp=/sw
--with-libiconv-prefix=/sw --with-ppl=/sw --with-cloog=/sw --with-mpc=/sw
--with-system-zlib --x-includes=/usr/X11R6/include --x-libraries=/usr/X11R6/lib
--program-suffix=-fsf-4.7 --enable-checking=yes --enable-cloog-backend=isl