Subject: Re: [PATCH 2/2] powerpc: add ALTIVEC support to lib/ when PPC_FPU not set

From: Segher Boessenkool <[email-masked]>
Date: Mon, 19 Apr 2021 08:57:14 -0500

On Mon, Apr 19, 2021 at 03:38:02PM +0200, Christophe Leroy wrote:
> Le 19/04/2021 à 15:32, Segher Boessenkool a écrit :
> >On Sun, Apr 18, 2021 at 01:17:26PM -0700, Randy Dunlap wrote:
> >>Add ldstfp.o to the Makefile for CONFIG_ALTIVEC and add
> >>externs for get_vr() and put_vr() in lib/sstep.c to fix the
> >>build errors.
> >
> >>  obj-$(CONFIG_PPC_FPU)	+= ldstfp.o
> >>+obj-$(CONFIG_ALTIVEC)	+= ldstfp.o
> >
> >It is probably a good idea to split ldstfp.S into two, one for each of
> >the two configuration options?
> >
> 
> Or we can build it all the time and #ifdef the FPU part.
> 
> Because it contains FPU, ALTIVEC and VSX stuff.

So it becomes an empty object file if none of the options are selected?
Good idea :-)

Segher