[Bug libfortran/123446] [16 Regression] Build broken since r16-6515-ge32c3fb4311bca for non-__GTHREADS_CXX0X targets

[rearnsha at gcc dot gnu.org]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=123446

--- Comment #3 from Richard Earnshaw <rearnsha at gcc dot gnu.org> ---
fails for arm-none-eabi and aarch64-none-elf as well when using newlib.