SIMD vs no SIMD on i686 (was: [Bug 3975] executable stack flag prevents use of libx264.so.148 with selinux in enforcing mode)

[Sérgio Basto]

On Ter, 2016-07-19 at 02:55 +0200, dominik at greysector.net wrote:
> Hello, Sérgio.
> 
> On Tuesday, 19 July 2016 at 02:35, RPM Fusion Bugzilla wrote:
> > 
> > https://bugzilla.rpmfusion.org/show_bug.cgi?id=3975
> > 
> > --- Comment #4 from Sérgio Basto <sergio at serjux.com> 2016-07-19
> > 02:35:19 CEST ---
> > (In reply to comment #3)
> > > 
> > > I'll take a look at this. Could you try running execstack -c on
> > > the installed
> > > library in the meantime?
> > Be my guest , in  meantime I read your thread on packaging Mailing
> > list about
> > sse3 , I'd like understand if we need 2 builds for i686 ... one
> > with sse2 other
> > without it, can you give us your opinion ? 
> The only real concern here are applications linked against libx264,
> which someone might want to run on low-end hardware, because I don't
> think anyone would want to encode anything to H.264 on non-SSE2
> capable
> CPU (i.e. Pentium 3 or Athlon XP and older). Considering last non-
> SSE2
> CPUs went out of production about 8 years ago, I think it's fairly
> safe
> to assume that the impact of doing SSE2-only builds would be
> negligible,
> if any.