On Wed, Jan 04, 2017 at 04:06:09PM -0500, Rich Felker wrote:
> The error is from gas; do you know the binutils version? Also, what
> -march is gcc configured for?

Thanks for the binutils hint. I just tried some older versions, and
found out that it builds fine with binutils 2.27.51.20161102-1, but
no longer with 2.27.51.20161105-1.