https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100486
--- Comment #9 from ofv at wanadoo dot es --- With those variables unset the build fails the same. Other users reported that only DWARF crashes. If the build is configured for SJLJ or SEH exception models, it completes. A user speculated that the problem might be related to Gcc 11 using DWARF 5 now. If you think that that is plausible and instruct me on how to revert that change I'll test the hypothesis.