https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63784
--- Comment #2 from H.J. Lu <hjl.tools at gmail dot com> --- We have a few choices: 1. Build libcc1 with LTO when GCC is configured with "--with-build-config=bootstrap-lto". Or 2. Teach libtool to always add -fPIC when linking shared object to support static archive compiled with LTO. Or 3. Don't compile libiberty with LTO. I tbink #2 is a better choice since the same thing may happen elsewhere.
