https://gcc.gnu.org/bugzilla/show_bug.cgi?id=124268
--- Comment #17 from Jonathan Wakely <redi at gcc dot gnu.org> --- Conceptually, that would be no different to adding an autoconf check to see whether the names from fenv.h (or setjmp.h, as in Bug 124554) can be exported, and then guarding the exports with a configure macro. But automatic, without having to add configure macros for everything which might not be exportable on some target somewhere.
