[Bug lto/48538] GCC build fails with -flto in BOOT_CFLAGS

[rguenth at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48538

--- Comment #1 from Richard Guenther <rguenth at gcc dot gnu.org> 2011-04-10 
10:51:05 UTC ---
You should not merely use -flto in BOOT_CFLAGS, that will fail anyway.  Instead
use --with-build-config=bootstrap-lto.