diff --git a/stub-ext/stub-shadow.cpp b/stub-ext/stub-shadow.cpp
new file mode 100644
index 0000000000000000000000000000000000000000..d49ede2c24f5de29c93bab26aca25c1cd12d4d09
--- /dev/null
+++ b/stub-ext/stub-shadow.cpp
@@ -0,0 +1,31 @@
+#include "stub-shadow.h"
+
+namespace stub_ext {
+
+WrapperMap stub_wrappers;
+
+Wrapper::Wrapper()
+{
+
+}
+
+Wrapper::~Wrapper()
+{
+
+}
+
+void freeWrapper(Wrapper *wrapper)
+{
+    if (!wrapper)
+        return;
+
+    for (auto iter = stub_wrappers.begin(); iter != stub_wrappers.end();) {
+        if (iter->second == wrapper)
+            iter = stub_wrappers.erase(iter);
+        else
+            ++iter;
+    }
+
+    delete wrapper;
+}
+}
diff --git a/stub-ext/stub-shadow.h b/stub-ext/stub-shadow.h
index eca019a54882a680b1f4ac2ebb9399e152fb4e21..ec2044ab400f8b30d6ebb8a7a296589e81ffac89 100644
--- a/stub-ext/stub-shadow.h
+++ b/stub-ext/stub-shadow.h
@@ -37,10 +37,13 @@ namespace stub_ext {
 class Wrapper
 {
 public:
-    Wrapper(){}
-    virtual ~Wrapper(){}
+    Wrapper();
+    virtual ~Wrapper();
 };
 
+typedef std::unordered_map<long, Wrapper* > WrapperMap;
+extern WrapperMap stub_wrappers;
+
 template<class Lamda>
 class LamdaWrapper : public Wrapper
 {
@@ -94,9 +97,6 @@ struct LamdaCaller<Ret (Obj::*)() const>
     }
 };
 
-
-static std::unordered_map<long, Wrapper* > stub_wrappers;
-
 template<typename Func, class Lamda>
 struct FuncShadow
 {
@@ -164,20 +164,7 @@ typename FuncShadow<Func, Lamda>::Shadow depictShadow(Wrapper **wrapper, Func fu
     return shadow;
 }
 
-static void freeWrapper(Wrapper *wrapper)
-{
-    if (!wrapper)
-        return;
-
-    for (auto iter = stub_wrappers.begin(); iter != stub_wrappers.end();) {
-        if (iter->second == wrapper)
-            iter = stub_wrappers.erase(iter);
-        else
-            ++iter;
-    }
-
-    delete wrapper;
-}
+void freeWrapper(Wrapper *wrapper);
 
 }