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Date:      Wed, 08 Jul 2015 16:09:06 -0500
From:      Pedro Giffuni <pfg@FreeBSD.org>
To:        Luigi Rizzo <luigi@FreeBSD.org>, src-committers@freebsd.org,  svn-src-all@freebsd.org, svn-src-head@freebsd.org
Subject:   Re: svn commit: r285284 - head/lib/liblzma
Message-ID:  <559D9172.9040305@FreeBSD.org>
In-Reply-To: <201507081836.t68IacJu069563@repo.freebsd.org>
References:  <201507081836.t68IacJu069563@repo.freebsd.org>

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On 07/08/15 13:36, Luigi Rizzo wrote:
> Author: luigi
> Date: Wed Jul  8 18:36:37 2015
> New Revision: 285284
> URL: https://svnweb.freebsd.org/changeset/base/285284
>
> Log:
>    only enable immintrin when clang is used. The base gcc does not support it.
>    
>    Reviewed by:	delphij
>
> Modified:
>    head/lib/liblzma/config.h
>
> Modified: head/lib/liblzma/config.h
> ==============================================================================
> --- head/lib/liblzma/config.h	Wed Jul  8 18:12:24 2015	(r285283)
> +++ head/lib/liblzma/config.h	Wed Jul  8 18:36:37 2015	(r285284)
> @@ -150,7 +150,8 @@
>   #define HAVE_ICONV 1
>   
>   /* Define to 1 if you have the <immintrin.h> header file. */
> -#if defined(__FreeBSD__) && defined(__amd64__)
> +/* FreeBSD - only with clang because the base gcc does not support it */
> +#if defined(__clang__) && defined(__FreeBSD__) && defined(__amd64__)
>   #define HAVE_IMMINTRIN_H 1
>   #endif
>   
>
FWIW, gcc 4.3+ does have it so this may some undesired (but hidden)
effect when building with an external gcc.

Pedro.



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