--- configure.orig	2012-02-06 15:05:54.000000000 -0800
+++ configure	2012-02-06 15:06:51.000000000 -0800
@@ -17094,9 +17094,9 @@
 fi
 if test "${ARCH_FLAG}"; then
     archflagpat=`eval echo '"'"${ARCH_FLAG}"'"' | sed 's/[][|.*]/\\&/g'`
-    CFLAGS=`echo "$CFLAGS" | sed "s|$archflagpat"'|$(ARCH_FLAG)|'`
-    CXXFLAGS=`echo "$CXXFLAGS" | sed "s|$archflagpat"'|$(ARCH_FLAG)|'`
-    LDFLAGS=`echo "$LDFLAGS" | sed "s|$archflagpat"'|$(ARCH_FLAG)|'`
+    CFLAGS=`echo "$CFLAGS" | sed "s|$archflagpat"'| $(ARCH_FLAG)|'`
+    CXXFLAGS=`echo "$CXXFLAGS" | sed "s|$archflagpat"'| $(ARCH_FLAG)|'`
+    LDFLAGS=`echo "$LDFLAGS" | sed "s|$archflagpat"'| $(ARCH_FLAG)|'`
 fi
 warnflags="$rb_cv_warnflags"
 cflags="$orig_cflags "'${optflags} ${debugflags} ${warnflags}'