[mythtv-users] configure question on MMX enable

[Michael T. Dean]

On 09/18/06 14:21, list at onnow.net wrote:

>Quick question..
>
>When compiling myth, with the ./configure alone does MMX get enabled  
>by default or do you have to specify that in the command?  I just used  
>confgure with no options and want to ensure I am getting the best  
>performance ( lowly 1Ghz celeron frontend machine )
>

Only if you specify "--enable-proc-opt".  (With a properly configured 
build system.  If you've got a broken toolchain or your system itself is 
broken or you're doing a cross-compile and haven't set everything up 
properly, it's possible for MMX not to be automatically enabled even 
with "--enable-proc-opt".)

Mike