--- synfig-0.64.2.orig/m4/subs.m4	2014-04-07 14:04:51.000000000 +0200
+++ synfig-0.64.2/m4/subs.m4	2014-11-16 22:17:50.308836164 +0100
@@ -88,8 +88,8 @@
 	esac
 
 
-	CXXFLAGS="`echo $CXXFLAGS | sed s:-g::` $debug_flags"
-	CFLAGS="`echo $CFLAGS | sed s:-g::` $debug_flags"
+	CXXFLAGS="`echo $CXXFLAGS | sed 's:-g : :; s:-g$::'` $debug_flags"
+	CFLAGS="`echo $CFLAGS | sed 's:-g : :; s:-g$::'` $debug_flags"
 
 	AC_MSG_RESULT([$debug_flags])
 ])