--- util/makefile.common	2015-10-26 16:32:56.000000000 +0100
+++ util/makefile.common.new	2015-12-03 20:29:01.368257244 +0100
@@ -241,9 +228,6 @@
 else
 
 ifeq ($(OPTIMIZE),yes)
-  # speedy!
-  FLAGS_DEF += -O3
-  FLAGS_DEF += -fomit-frame-pointer
   # turn off asserts:
   FLAGS_DEF += $(ASSERT)