https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97798
--- Comment #13 from Jonathan Wakely <redi at gcc dot gnu.org> --- I tried a bootstrap of gcc-10 and I get this error during libgcc/configure conftest.s: Assembler messages: conftest.s:168: Error: unknown pseudo-op: `.mspabi_attribute' conftest.s:169: Error: unknown pseudo-op: `.mspabi_attribute' conftest.s:170: Error: unknown pseudo-op: `.mspabi_attribute' This is using the same binutils that I used to successfully bootstrap trunk: GNU assembler (GNU Binutils) 2.32.51.20190613 Copyright (C) 2019 Free Software Foundation, Inc. This program is free software; you may redistribute it under the terms of the GNU General Public License version 3 or later. This program has absolutely no warranty. This assembler was configured for a target of `msp430-elf'.