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Re: unneeded -D_GNU_SOURCE

From: Daniel Jacobowitz <drow at false dot org>
To: "Peter S. Mazinger" <ps dot m at gmx dot net>
Cc: binutils at sourceware dot org
Date: Tue, 23 Oct 2007 07:40:45 -0400
Subject: Re: unneeded -D_GNU_SOURCE
References: <Pine.LNX.4.44.0710230910240.2273-100000@lnx.bridge.intra>

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

References:
- unneeded -D_GNU_SOURCE
  - From: Peter S. Mazinger

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