diff --git a/src/nlsr_sm.cpp b/src/nlsr_sm.cpp
new file mode 100644
index 0000000..4a1706d
--- /dev/null
+++ b/src/nlsr_sm.cpp
@@ -0,0 +1,9 @@
+#include <string>
+#include <iostream>
+#include "nlsr_sm.hpp"
+
+using namespace std;
+
+class nlsr;
+
+