From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 15260 invoked by uid 1002); 30 Sep 2003 12:57:43 -0000 Mailing-List: contact gentoo-dev-help@gentoo.org; run by ezmlm Precedence: bulk List-Post: List-Help: List-Unsubscribe: List-Subscribe: List-Id: Gentoo Linux mail X-BeenThere: gentoo-dev@gentoo.org Received: (qmail 5949 invoked from network); 30 Sep 2003 12:57:43 -0000 From: Paul de Vrieze To: gentoo-dev@gentoo.org Date: Tue, 30 Sep 2003 14:57:04 +0200 User-Agent: KMail/1.5.4 References: <28C2D7E4-F344-11D7-A570-0003934489D0@gentoo.org> In-Reply-To: <28C2D7E4-F344-11D7-A570-0003934489D0@gentoo.org> MIME-Version: 1.0 Content-Type: Text/Plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Content-Description: clearsigned data Content-Disposition: inline Message-Id: <200309301457.10626.pauldv@gentoo.org> Subject: Re: [gentoo-dev] The SIMD debacle X-Archives-Salt: ace1ba71-8dfe-4bee-ac7a-4a0773707970 X-Archives-Hash: f7c2dfa4c394426e0f76263aa0a4c435 =2D----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On Tuesday 30 September 2003 14:46, Jon Ellis wrote: > Can someone explain the sse / 3dnow! situation to me? > > My understanding is that most modern intel and amd chips supprt sse, > but only amd support 3dnow! Is this correct? Why would someone with a > pentium 4 box have 3dnow in their use flags? > I think you are completely right, 3dnow in the useflags should be only done= on=20 amd systems that have 3dnow. > Does anyone point me a ebuilds that correctly handle this stuff? It > would be most useful to understand how protect users from themselves > and reduce the number 'invalid instruction' bugs filed against > libvorbis! I think you might want to put in a check to test for actual 3dnow support.= =20 However it is perfectly legal to build a package on a p4 that is going to r= un=20 on an athlon, so disabling the useflag might limit the users. Paul =2D --=20 Paul de Vrieze Gentoo Developer Mail: pauldv@gentoo.org Homepage: http://www.devrieze.net =2D----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.3 (GNU/Linux) iD8DBQE/eX2mbKx5DBjWFdsRAlriAKCNN/lgHcVFYdZaceVvD5Kt0sgWAgCgiqgi 0zGRSJKQOS0stKTWREmM5II=3D =3DHv0F =2D----END PGP SIGNATURE----- -- gentoo-dev@gentoo.org mailing list