http://gcc.gnu.org/bugzilla/show_bug.cgi?id=55308
--- Comment #10 from Anton Shterenlikht <mexas at bristol dot ac.uk> 2013-02-25 14:15:32 UTC --- Just to say that on my system I have the same GAS version: # /usr/local/bin/as --version GNU assembler (GNU Binutils) 2.23.1 Copyright 2012 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 `sparc64-portbld-freebsd10.0'. Also, I see these assembler related errors in gcc/config.log (the full log: http://seis.bris.ac.uk/~mexas/sparc64-gcc48-config.log) configure:21795: /usr/local/bin/as -o conftest.o conftest.s >&5 conftest.s: Assembler messages: conftest.s:1: Error: unknown pseudo-op: `.literal16' configure:21934: checking assembler for .nsubspa comdat configure:21948: /usr/local/bin/as -o conftest.o conftest.s >&5 conftest.s: Assembler messages: conftest.s:2: Error: unknown pseudo-op: `.nsubspa' configure:25960: checking assembler for buggy dwarf2 .file directive configure:25970: /usr/local/bin/as -o conftest.o conftest.s >&5 conftest.s: Assembler messages: conftest.s:2: Error: file number 1 already allocated configure:26114: checking assembler for .lcomm with alignment configure:26123: /usr/local/bin/as -o conftest.o conftest.s >&5 conftest.s: Assembler messages: conftest.s:1: Error: junk at end of line, first unrecognized character is `,' configure:26153: checking assembler for gnu_unique_object configure:26167: /usr/local/bin/as -o conftest.o conftest.s >&5 conftest.s: Assembler messages: conftest.s:1: Error: symbol type "gnu_unique_object" is supported only by GNU targets