Index: mttroot/mtt/lib/rep/cxxsim_rep.make
==================================================================
--- mttroot/mtt/lib/rep/cxxsim_rep.make
+++ mttroot/mtt/lib/rep/cxxsim_rep.make
@@ -14,11 +14,11 @@
 # maybe another day ...
 
 CC=g++
 
 INCLUDE=-I. -I${MTT_LIB}/cr/hh
-OPTIMISE=-O0
+OPTIMISE=-O3
 WARNINGS=-Wall -ansi -pedantic
 
 ifeq ("","$(MTT_ARG)")
 TARGET=$(MTT_SYS)_cxxsim.$(MTT_LANG)
 else