Can't build: "`CFLAGS' has changed since the previous run"

[Ralf Corsepius]

On Fri, 2007-05-04 at 08:12 -0500, Eric Norum wrote:
> The problem you're seeing is because of a disagreement about trailing  
> spaces.  Here's a script which I run from the top of the newlib  
> source tree before running configure.  The script adds some commands  
> to each configure script to strip trailing spaces before comparing  
> the values.
> 
> BTW -- are you building on OS X?  That's where I encountered this  
> problem.
This issue has nothing to do with OS X nor is running a script the
appropriate fix.

The bug causing this issue is in GCC-4.1.x's toplevel configure script
and its interaction with newlib-1.15.0's configure script.

Ralf