2009/9/25 Jussi Lehtola <jussilehtola@xxxxxxxxxxxxxxxxx>: > On Fri, 2009-09-25 at 16:30 +0100, Jonathan Underwood wrote: >> Well, my point was that packages that do respect CFLAGS get built >> currently with certain options, and however Atlas builds, the default >> package should have comparable options. On x86, I see that is >> presently -march=i686 -mtune=atom, and IIRC -march=i686 implies sse >> and sse2 (not sure about sse3). Anyway, whatever it implies, I think >> that should be the default for the main Atlas package too. > > No, -march=i686 does not use SSE; excerpt from gcc man page: > > i686 Same as "generic", but when used as "march" option, PentiumPro > instruction set will be used, so the code will run on all i686 > family chips. Ah, right, thanks. Then I am advocating that Atlas be built without SSE for the main package (option 1 of Deji's proposals, I think). -- fedora-devel-list mailing list fedora-devel-list@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/fedora-devel-list
