[PATCH, AArch64] Detect assembler vector mov parsing bug

[Will Newton]

On 14 July 2014 20:54, Richard Henderson <rth@twiddle.net> wrote:
> The strchr implementation that was recently committed to mainline tickles an
> assembler bug fixed by
>
> commit 8db49cc2de52033990ae5d4d6aacedc8f986e803
> Author: Will Newton <will.newton@linaro.org>
> Date:   Thu Oct 31 17:21:11 2013 -0700
>
>     config/tc-aarch64.c: Avoid trying to parse a vector mov as immediate.
>     ...
>
> Obviously not a problem with a relatively new binutils installed, but Carlos
> ran into this problem building mainline glibc on a system using binutils 2.23.
>
> It's not a silent error (we die linking ld.so), but its somewhat cryptic.
> Carlos opined to me that we ought to error out at configure time with an
> understandable message.
>
> Rather than check for version numbers, let's check for functionality.
>
> Ok?

This looks ok to me, although it might be nice to mention that 2.24 is
a version containing the fix.

-- 
Will Newton
Toolchain Working Group, Linaro