how to make toolchain support VFP instead of FPA?

[Wu Mingqiao]

The reason is I must configure arm-linux-gcc with the option
--without-fp so that no any hard fpu is specified. The patch is ok.
Thanks.


On Wed, 15 Sep 2004 12:11:10 +0800, Wu Mingqiao <mingqiao.wu@gmail.com> wrote:
> Thanks very much.
> I am originally going to report after successful building.
> Unfortunately, I encountered an error which has not been overcome up
> to now.
> 
> The error is described below:
> 
> When building glibc/sysdeps/generic/setfpucw.c with
> arm-iwmmxt-linux-gnu-gcc, it reported "selected processor does not
> support 'rfs r2' ". I checked the source files and found it depends on
> sysdeps/arm/fpu_control.h.  The 'rfs'  is FPA instruction. I wonder
> why it still uses FPA instruction after I have patched the following
> softfloat.patch.
> 
> 
> 
> 
> On Mon, 13 Sep 2004 21:27:05 -0700, Dan Kegel <dank@kegel.com> wrote:
> > Wu Mingqiao wrote:
> > > I am trying to use crosstool-0.28-rc34 to build toolchain for
> > > arm-iwmmxt, with gcc-3.4.0 and glibc-2.3.2.   I want the toolchain to
> > > support VFP architecture instead of FPA. ...
> >
> > You may want to apply the patch
> > http://www.andric.com/cross/patches/gcc-3.4.0-arm-softfloat.patch.bz2
> >
> > I don't include it in crosstool because it's a new feature that has
> > not yet settled down, and crosstool is supposed to only include
> > stable bugfixes, not new features.
> > - Dan
> >
> > --
> > My technical stuff: http://kegel.com
> > My politics: see http://www.misleader.org for examples of why I'm for regime change
> >
>

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