On Sun, Mar 16, 2003 at 08:44:40AM -0800, Jason Thorpe wrote:
> 
> On Sunday, March 16, 2003, at 04:05  AM, Juergen Hannken-Illjes wrote:
> 
> >I understand. What about
> >
> >	#define CC1_SPEC "-mno-multiple %{!mcpu*: -mstrict-align}"
> >
> >to set this flag only when there is no -mXXX?
> 
> I don't think that's quite right, either.  You want this to be enabled 
> if e.g. -mcpu=403, right? :-)

I didn't get any problems using -mcpu=403, no -mstrict-align while
compiling the explora kernel. I got this problem only in userland.

> Maybe something like:
> 
> #define CC1_SPEC \
> "-mno-multiple \
>  %{mstrict-align: -mstrict-align} \
>  %{mno-strict-align: -mno-strict-align} \
>  %{!mstrict-align: \
>    %{!mno-strict-align: \
>      %{!mcpu=60*: \
>        %{!mcpu=74*: \
>          %{!mcpu=75*: -mstrict-align}}}}}"
> 
> (I think I got the logic right there :-)
> 
> Also note that this should be done in the NetBSD-specific rs6000 config 
> file, not in the generic rs6000.h.

rs6000.h lists also these -mcpu=XXX:

	mcpu=common
	mcpu=power
	mcpu=power2
	mcpu=powerpc
	mcpu=rios
	mcpu=rios1
	mcpu=rios2
	mcpu=rsc
	mcpu=rsc1
	mcpu=505
	mcpu=801
	mcpu=821
	mcpu=823
	mcpu=860

Another idea: If someone want's specific flags for his userland let him
specify both (-mcpu=XXX -mno-strict-align) in the hope the -mno-strict-align
overrides the implicit -mstrict-align.
-- 
Juergen Hannken-Illjes - hannken@eis.cs.tu-bs.de - TU Braunschweig (Germany)