https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100346
--- Comment #11 from Jakub Jelinek <jakub at gcc dot gnu.org> --- It is not a strong requirement, if one doesn't do anything that results in these linker warnings, then older binutils are fine. And even when does something that triggers those, one can always compile/link with -gdwarf-4 or -gdwarf-3 etc. So if we document something, it should be a recommendation not a requirement and say possible workarounds. This will happen again when we switch to DWARF 6 in a year or three.
