Re: a newbie problem about "-mcpu=xscale"

[Richard Earnshaw <rearnsha at arm dot com>]

> > On Sat, 13 Mar 2004, kyy wrote:
> > 
> > > > hi:
> > > >     I am trying to build a program for px262, so I add a option "-mcpu=xscale" just as below:
> > > >
> > > > >>arm-linux-gcc -mcpu=xscale main.c
> > > > //main.c is a hellworld program, and I got some error information:
> > > >
> > > > /pub/arm/bin/arm-linux-ld: ERROR: /pub/arm/lib/gcc-lib/arm-linux/3.2.3/crtend.o uses FPA instructions, whereas a.out uses VFP instructions
> > > > File format not recognized: failed to merge target specific data of file /pub/arm/lib/gcc-lib/arm-linux/3.2.3/crtend.o
> > > > /pub/arm/bin/arm-linux-ld: ERROR: /pub/arm/lib/gcc-lib/arm-linux/3.2.3/../../../../arm-linux/lib/crtn.o uses FPA instructions, whereas a.out uses VFP instructions
> > > > File format not recognized: failed to merge target specific data of file /pub/arm/lib/gcc-lib/arm-linux/3.2.3/../../../../arm-linux/lib/crtn.o
> > > > collect2: ld returned 1 exit status
> > > >
> > > > anyone can tell me why?

This is turning into a FAQ...

  It's the -mcpu=xscale flag, which is causing the assembler to assume you 
  want a VFP-style environment.  However, for Linux that's wrong (since 
the
  OS should be determining the platform ABI).

  If you don't already have them, then you need these two patches to gas:

  http://sources.redhat.com/ml/binutils/2003-06/msg00494.html
  http://sources.redhat.com/ml/binutils/2003-06/msg00497.html

R.


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