Subject: Re: [patch][5/5] powerpc: Add the general support for Embedded Floating-Point instructions

From: Segher Boessenkool <[email-masked]>
Date: Fri, 12 Jan 2007 13:36:40 +0100

> CONFIG_SPE doesn't force the whole math emulation to be built. If 
> CONFIG_SPE is set,
> only the new SPFP/DPFP/VSPFP instructions in arch/powerpc/math-emu 
> will be built,
> while the previous FPU instructions won't.

And the other way around I suppose.

> Therefore, what I'm trying to do is to build directory 
> arch/powerpc/math-emu if
> CONFIG_MATH_EMULATION or CONFIG_SPE is set. Do you have any idea?

Maybe you should really have a separate CONFIG_SPE_MATH_EMU?
Or that might complicate things more than it solves, dunno.

Segher