Re: -mcpu vs. binutils 2.13.90.0.18

[Daniel Jacobowitz <dan@debian.org>]

On Tue, May 13, 2003 at 09:27:35PM +0200, Thiemo Seufer wrote:
> Guido Guenther wrote:
> [snip]
> > > > So to build kernels for say IP22 R5k I'd change the current
> > > >         GCCFLAGS += -mcpu=r5000 -mips2 -Wa,--trap
> > > > to 
> > > >         GCCFLAGS += -mabi=o32 -march=R5000 -mtune=R5000 -Wa,--trap
> > > > where as for R4X00 I use
> > > >         GCCFLAGS += -mabi=o32 -march=R4600 -mtune=R4600 -Wa,--trap
> > > > Correct?
> > > 
> > > Yes, this should work. You can leave the -mtune out, since it defaults
> > > to the value of -march anyway.
> > Just for completeness: I had to use:
> >     GCCFLAGS += -mabi=32 -march=r4600 -mtune=r4600 -Wa,--trap
> > to make gcc-3.3 happy (note the 32 instead of o32).
> 
> Yes, IIRC 64 vs. n64 has the same problem.

That's not quite the same: 64 is o64, n64 is n64.  GCC's never called
the 32-bit ABI "o32".

-- 
Daniel Jacobowitz
MontaVista Software                         Debian GNU/Linux Developer