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Re: mplayer



On Tue, Jul 15, 2003 at 03:13:06PM -0700, Mike Fedyk wrote:
> On Tue, Jul 15, 2003 at 12:25:19AM +0200, martin f krafft wrote:
> >   Another impediment to binary redistribution were compiletime
> >   optimizations for CPU architecture. MPlayer now supports runtime
> >   CPU detection (specify the --enable-runtime-cpudetection option
> >   when configuring). It is disabled by default because it implies
> >   a small speed sacrifice, but it is now possible to create binaries
> >   that run on different members of the Intel CPU family.
> 
> why isn't the part needing the optimizations put into a seperate library,
> and let ld choose the correct library based on cpu type?
> 
> That should avoid any speed penalties.

The mplayer developers needed run-time CPU detection to be slower than
compile-time, so they implemented it in a broken fashion.

-- 
  .''`.  ** Debian GNU/Linux ** | Andrew Suffield
 : :' :  http://www.debian.org/ | Dept. of Computing,
 `. `'                          | Imperial College,
   `-             -><-          | London, UK

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