unneeded -D_GNU_SOURCE

[Daniel Jacobowitz]

On Tue, Oct 23, 2007 at 09:26:27AM +0200, Peter S. Mazinger wrote:
> Hello,
> 
> I have cross-compiled binutils (2.18) in an environment, where though 
> glibc headers are used, but _GNU_SOURCE is undefined in features.h 
> immediately after it defines _XOPEN_SOURCE/_POSIX_SOURCE and the others 
> (the target library does not provide any of the GNU extensions either) and 
> found that binutils does not need any of the GNU extensions (meaning those
> guarded by __USE_GNU), haven't tracked down which are enough of all those 
> defines, but _XOPEN_SOURCE and/or _POSIX_SOURCE could be more appropiate 
> to reflect the reality.

Binutils is written portably.  It isn't supposed to and does not
require _GNU_SOURCE.  But it does detect some GNU extensions in
configure and use them if they are available (e.g. stpcpy).

-- 
Daniel Jacobowitz
CodeSourcery