From patchwork Fri Jun 18 11:00:23 2010
Content-Type: text/plain; charset="utf-8"
MIME-Version: 1.0
Content-Transfer-Encoding: 7bit
Subject: PowerPC64 large toc model
Date: Fri, 18 Jun 2010 01:00:23 -0000
From: Alan Modra <amodra@gmail.com>
X-Patchwork-Id: 56173
Message-Id: <20100618110023.GD18443@bubble.grove.modra.org>
To: Richard Guenther <richard.guenther@gmail.com>
Cc: David Edelsohn <dje.gcc@gmail.com>, gcc-patches@gcc.gnu.org

On Fri, Jun 18, 2010 at 12:00:29PM +0200, Richard Guenther wrote:
> This broke bootstrap on linux64 with
> 
> 11:55 < richi> ../../mem-ref2/gcc/config/rs6000/rs6000.c: In function
>                'rs6000_override_options':
> 11:55 < richi> ../../mem-ref2/gcc/config/rs6000/rs6000.c:2775:3: error: suggest
>                braces around empty body in an 'if' statement
>                [-Werror=empty-body]

Oops.  You need bleeding edge GNU ld to pass the HAVE_LD_LARGE_TOC
configure test, and an in-tree binutils needs to have its version
hacked to 2.21.  Committing the following as obvious.  Sorry about the
breakage.

	* config/rs6000/linux64.h (SET_CMODEL): Don't expand to empty.


Index: gcc/config/rs6000/linux64.h
===================================================================
--- gcc/config/rs6000/linux64.h	(revision 160977)
+++ gcc/config/rs6000/linux64.h	(working copy)
@@ -70,7 +70,7 @@ extern enum rs6000_cmodel cmodel;
 #define TARGET_CMODEL cmodel
 #define SET_CMODEL(opt) cmodel = opt
 #else
-#define SET_CMODEL(opt)
+#define SET_CMODEL(opt) do {} while (0)
 #endif
 
 #undef  PROCESSOR_DEFAULT