[pulseaudio-discuss] detection of SSE3 support in configure.ac

[Pierre-Louis Bossart]

> The run-time detection is already available in the pa_cpu_info
> structure
> in pa_core.

Yes, that's what I'm using.
 
> At compile-time, you could follow something similar to what we've done
> for some ARM instructions in configure.ac for the ssat and pkhbt
> instructions -- just a small assembly fragment in a C program that can
> be run through the compiler to make sure the assembler accepts it.

I was hoping someone smarter and/or less lazy than me would have done
this...