Re: Building newlib without -mhard-float

[Rick Mann <rmann at latencyzero dot com>]

On Sep 4, 2007, at 5:09 PM, Jeff Johnston wrote:

> Rick Mann wrote:
> > On Sep 4, 2007, at 11:22 AM, Jeff Johnston wrote:
> > > 2. Disable multilib and manually build a library you want.  In this
> > >    particular case, you should use TARGET_CFLAGS to append whatever
> > >    compiler options you want to the default options used to build
> > >    newlib.  You disable multilib by adding --disable-multilib to
> > Did you mean CFLAGS_FOR_TARGET instead of TARGET_CFLAGS?
>
> I meant TARGET_CFLAGS.  This is used in all low-level newlib  
> directories (take a look at libc/string/Makefile.am).  This will  
> add your options without messing with defaulted and configured  
> options (e.g. -g -O2 is defaulted and you want to add -march=mycpu).

Oh, okay. The reason I asked is that after I ran configure, I looked  
in the top-level makefile for TARGET_CFLAGS and couldn't find it.  
Should I just do it like this?

TARGET_CLFAGS="-march=armv5te -mcpu=xscale"

Which brings up another question I've had before: should I just use - 
mcpu=xscale, or just -march=armv5te, or both? At one point, I got  
errors in something when I used both, saying that they were in  
conflict (IIRC--strikes me as incorrect).

TIA,
Rick