+if(CMAKE_SYSTEM_NAME MATCHES "Darwin")
+ option(enable_smpi "This variable set smpi lib." off) #for the moment it doesn't compil with MacOS
+else(CMAKE_SYSTEM_NAME MATCHES "Darwin")
+ option(enable_smpi "This variable set smpi lib." on)
+endif(CMAKE_SYSTEM_NAME MATCHES "Darwin")
+option(enable_gtnets "Whether gtnets model is activated." on)
+option(enable_java "Whether the Java bindings are activated." on)
+if(WIN32 OR APPLE)
+option(enable_lua "Whether the lua bindings are activated." off)
+option(enable_ruby "Whether the Ruby bindings are activated." off)
+else(WIN32 OR APPLE)
+option(enable_lua "Whether the lua bindings are activated." on)
+option(enable_ruby "Whether the Ruby bindings are activated." on)
+endif(WIN32 OR APPLE)
+option(enable_doc "Whether we should rebuild the documentation" off)