2013-12-11 Kugan Vivekanandarajah <kuganv@linaro.org>
* configure.ac: Add check for aarch64 assembler -mabi support.
* configure: Regenerate.
* config.in: Regenerate.
* config/aarch64/aarch64-elf.h (ASM_MABI_SPEC): New define.
(ASM_SPEC): Update to substitute -mabi with ASM_MABI_SPEC.
* config/aarch64/aarch64.h (aarch64_override_options): Issue error
if assembler does not support -mabi and option ilp32 is selected.
* doc/install.texi: Added note that building gcc 4.9 and after
with pre 2.24 binutils will not support -mabi=ilp32.
From-SVN: r205891
