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Date: Mon, 24 Jun 2019 16:22:04 +0200
From: Solar Designer <solar@...nwall.com>
To: john-users@...ts.openwall.com
Subject: Re: Disable specific SIMD features like AVX, AVX2, etc.

Hi,

On Mon, Jun 24, 2019 at 04:55:03PM +0300, Jonathan A wrote:
> I am aware of the option to run "./configure --disable-simd", but I
> understand that this disables all SID features. Is it possible to disable
> only specific features (specifically I'm interested in disabling all AVX
> features: AVX, AVX2, AVX512F, AVX512BW).

You can do it with:

./configure --enable-simd=sse4

This syntax implies you want to disable SIMD extensions superior to the
one you chose to explicitly enable.

Out of curiosity (and possibly to provide additional advice), why do you
want to do that?

Alexander

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