our m4 lacks the -E option to turn warnings into errors.

from Stefan Rinkes
ok sthen@

devel/scons/Makefile

@@ -1,11 +1,11 @@
-# $OpenBSD: Makefile,v 1.14 2011/09/16 09:24:58 espie Exp $
+# $OpenBSD: Makefile,v 1.15 2011/12/21 17:41:52 jasper Exp $
 
 COMMENT=	Python-based build system
 
 VERSION=	2.0.1
 DISTNAME=	scons-${VERSION}
 CATEGORIES=	devel
-REVISION =	1
+REVISION =	2
 
 HOMEPAGE=	http://www.scons.org/
 

devel/scons/patches/patch-engine_SCons_Tool_m4_py

@@ -0,0 +1,14 @@
+$OpenBSD: patch-engine_SCons_Tool_m4_py,v 1.1 2011/12/21 17:41:52 jasper Exp $
+
+XXX: OpenBSD's m4(1) lacks the -E option (needs to be implemented though).
+
+--- engine/SCons/Tool/m4.py.orig	Wed Dec 21 18:39:51 2011
++++ engine/SCons/Tool/m4.py	Wed Dec 21 18:40:07 2011
+@@ -50,7 +50,6 @@ def generate(env):
+     # The src_suffix setup is like so: file.c.m4 -> file.c,
+     # file.cpp.m4 -> file.cpp etc.
+     env['M4']      = 'm4'
+-    env['M4FLAGS'] = SCons.Util.CLVar('-E')
+     env['M4COM']   = 'cd ${SOURCE.rsrcdir} && $M4 $M4FLAGS < ${SOURCE.file} > ${TARGET.abspath}'
+ 
+ def exists(env):