Fail to build on freebsd 7.3

[Christian Grothoff]

On 03/21/2013 03:56 PM, Werner Koch wrote:
> On Thu, 21 Mar 2013 10:42, wachs at net.in.tum.de said:
> 
>> /var/tmp//ccwZLDVe.s: Assembler messages:
>> /var/tmp//ccwZLDVe.s:15053: Error: no such instruction: `pshufb
>> be_mask.6570(%rip),%xmm2'
> 
> Your as(1) is too old.  Use --disable-aes-support or update the
> toolchain.  We could also test whether the compiler supports this and
> directlt disable AES support.

Eh, but we need AES support, so disabling it is not an option.  Matthias, if we
cannot update 'as', we need to convince libgcrypt to revert to a C implementation.

> I think you are the first one to reports this problem, thus I am not
> sure whether a configure test is justified.

Let's see if upgrading 'as' is much of a problem first.

-Christian