[Bug c++/64697] C++11 thread_local: relocation truncated to fit: R_X86_64_PC32 against undefined symbol `TLS init function for N::ptd'

[vhaisman at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=64697

--- Comment #9 from Václav Zeman <vhaisman at gmail dot com> ---
(In reply to H.J. Lu from comment #8)
> Your compiler doesn't have proper LTO support.  Please turn it
> off with -fno-lto.

How/why is it improper?