--- dddmp/Makefile.orig	2012-02-04 21:53:21.000000000 -0600
+++ dddmp/Makefile	2014-10-01 20:33:16.000000000 -0500
@@ -67,7 +67,7 @@
 # Settings for optimized code with gcc
 #ICFLAGS	= -g -Wall
 #ICFLAGS	= -g -O3 -Wall
-ICFLAGS	= -g -O6 -Wall
+ICFLAGS	= -g -O3 -Wall
       
 #--------------------------------#
 # Define Machine Dependent Flags #