Hide some potential bugs by disabling default warnings with clang.

devel/binutils/Makefile

@@ -1,4 +1,4 @@
-# $NetBSD: Makefile,v 1.39 2011/08/22 08:51:46 wiz Exp $
+# $NetBSD: Makefile,v 1.40 2011/09/07 23:41:04 joerg Exp $
 
 DISTNAME=	binutils-2.17
 PKGREVISION=	1
@@ -44,6 +44,12 @@ PLIST_VARS+=	gprof
 PLIST.gprof=	yes
 .endif
 
+.include "../../mk/compiler.mk"
+.if !empty(PKGSRC_COMPILER:Mclang)
+CFLAGS+=	-Wno-unused-value -Wno-format-security \
+		-Wno-uninitialized -Wno-format
+.endif
+
 # Prevent the need to run texi2pod.pl and pod2man hence
 # the need for perl as build dependency.
 #