SSE in libthr

[John-Mark Gurney]

Eric van Gyzen wrote this message on Fri, Mar 27, 2015 at 17:43 -0400:
> On 03/27/2015 16:49, Rui Paulo wrote:
> >
> > Regarding your patch, I think we should disable even more, if possible.  How about:
> >
> > CFLAGS+=        -mno-mmx -mno-3dnow -mno-sse -mno-sse2 -mno-sse3
> 
> Yes, I was considering copying all of the similar flags that we use in the
> kernel.  That seems wise.  According to comments in sys/conf/kern.mk, only
> no-mmx and no-sse would be necessary, as they imply the others.
> 
> dim@ raised the possibility of CPUTYPE=foo on i386, so I would also apply this
> change to i386.
> 
> An updated patch is below.

We should probably add a $(CFLAGS_NOFPU) define and use that.. Then it
can be properly tweaked per compiler and per arch as necessary instead
of hardcoding the selection in each makefile...

-- 
  John-Mark Gurney				Voice: +1 415 225 5579

     "All that I will do, has been done, All that I have, has not."