https://gcc.gnu.org/bugzilla/show_bug.cgi?id=127914
--- Comment #4 from Steve Kargl <kargl at gcc dot gnu.org> --- Sigh. It appears that FreeBSD recently changed the visibility of some functions in string.h. https://cgit.freebsd.org/src/commit/include/string.hid=d08296c7ab0d7bb259bf7b8cdf9ffb819c1929ab It's unclear to me what needs to be done, here.
