https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64697
--- Comment #8 from H.J. Lu <hjl.tools at gmail dot com> --- Your compiler doesn't have proper LTO support. Please turn it off with -fno-lto.
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64697
--- Comment #8 from H.J. Lu <hjl.tools at gmail dot com> --- Your compiler doesn't have proper LTO support. Please turn it off with -fno-lto.