In addition to failures building glibc, for those configurations for which glibc builds there's a failure building the testsuite:
tst-thread_local1.cc:177:5: error: variable 'std::array<std::pair<const char*, std::function<void(void* (*)(void*))> >, 2> do_thread_X' has initializer but incomplete type 177 | do_thread_X | ^~~~~~~~~~~ -- Joseph S. Myers jos...@codesourcery.com