-option(enable_compile_optimizations "" off)
-option(enable_compile_warnings "" off)
-option(enable_maintainer_mode "Permit to make flex and flexml files." off)
-option(enable_supernovae "Supernovae mode." off)
-option(enable_tracing "Tracing MSG (for now) simulations for visualization." off)
+if(WIN32 OR APPLE)
+set(enable_smpi off CACHE TYPE INTERNAL FORCE)
+set(enable_lua off CACHE TYPE INTERNAL FORCE)
+set(enable_ruby off CACHE TYPE INTERNAL FORCE)
+endif(WIN32 OR APPLE)
+
+option(enable_compile_optimizations "" on)
+option(enable_compile_warnings "Whether compilation warnings should be turned into errors." off)
+option(enable_maintainer_mode "Whether flex and flexml files should be rebuilt." off)
+option(enable_supernovae "Whether Supernovae mode (helping compiler optimization) is activated." on)
+option(enable_tracing "Tracing simulations for visualization." on)
+option(enable_latency_bound_tracking "" off)