--- SConstruct
+++ SConstruct
@@ -259,7 +259,6 @@
     env.Append(CCFLAGS=['-g'])
     env.Append(CPPDEFINES=['DEBUG', '_DEBUG'])
   else:
-    env.Append(CCFLAGS=['-O2'])
     env.Append(CPPDEFINES=['NDEBUG'])
 
   ### works for Mac OS. probably needs to change