diff --git a/contrib/other-builds/extract-mixed-syntax/RuleSymbol.cpp b/contrib/other-builds/extract-mixed-syntax/RuleSymbol.cpp
new file mode 100644
index 000000000..d921127ee
--- /dev/null
+++ b/contrib/other-builds/extract-mixed-syntax/RuleSymbol.cpp
@@ -0,0 +1,18 @@
+/*
+ * RuleSymbol.cpp
+ *
+ *  Created on: 21 Feb 2014
+ *      Author: hieu
+ */
+
+#include <RuleSymbol.h>
+
+RuleSymbol::RuleSymbol() {
+	// TODO Auto-generated constructor stub
+
+}
+
+RuleSymbol::~RuleSymbol() {
+	// TODO Auto-generated destructor stub
+}
+
diff --git a/contrib/other-builds/extract-mixed-syntax/RuleSymbol.h b/contrib/other-builds/extract-mixed-syntax/RuleSymbol.h
new file mode 100644
index 000000000..5c6c9534a
--- /dev/null
+++ b/contrib/other-builds/extract-mixed-syntax/RuleSymbol.h
@@ -0,0 +1,22 @@
+/*
+ * RuleSymbol.h
+ *
+ *  Created on: 21 Feb 2014
+ *      Author: hieu
+ */
+
+#ifndef RULESYMBOL_H_
+#define RULESYMBOL_H_
+
+#include <iostream>
+
+class RuleSymbol {
+public:
+	RuleSymbol();
+	virtual ~RuleSymbol();
+
+	virtual void Debug(std::ostream &out) const = 0;
+
+};
+
+#endif /* RULESYMBOL_H_ */