diff --git a/tools/hc-gen/Makefile b/tools/hc-gen/Makefile
index 9ee07ed59f96c1e989eb5c723a413832dd4073bc..34ee1fbc1e4463e3a2c604dbd6e51464645d482f 100644
--- a/tools/hc-gen/Makefile
+++ b/tools/hc-gen/Makefile
@@ -22,6 +22,7 @@ $(OBJECTS): $(BUILD_DIR)/%.o : %.cpp
 	$(Q) $(CXX) $(CXX_FLAGS)  $(CXX_LD_FLAGS) -c $< -o $@
 
 $(TARGET): $(OBJECTS)
+	$(Q) echo built $@
 	$(Q) $(CXX) $(CXX_FLAGS) $(CXX_LD_FLAGS) $^ -o $@
 
 test: $(TARGET)
diff --git a/tools/hc-gen/src/ast.h b/tools/hc-gen/src/ast.h
index fb37bbfe130967f40bf5b4e3574be61ad67a1648..543483391dd3ddf65811ccdcc1304bef5ec042f4 100644
--- a/tools/hc-gen/src/ast.h
+++ b/tools/hc-gen/src/ast.h
@@ -434,6 +434,10 @@ private:
     bool redefineChecked_;
 };
 
+std::ostream& operator<<(std::ostream &s, const AstObject &obj);
+std::ostream& operator<<(std::ostream &s, const ConfigNode &obj);
+std::ostream& operator<<(std::ostream &s, const ConfigTerm &obj);
+
 } // Hardware
 } // OHOS
 
diff --git a/tools/hc-gen/src/lexer.h b/tools/hc-gen/src/lexer.h
index 2fe69958660fd46420bb8827a848e40f7ac1b13f..adbc063fea24636a712f0cfab425ca2406a3013c 100644
--- a/tools/hc-gen/src/lexer.h
+++ b/tools/hc-gen/src/lexer.h
@@ -76,6 +76,8 @@ private:
     int32_t lineLoc_;
 };
 
+std::ostream& operator<<(std::ostream &s, const Lexer &lexer);
+
 } // Hardware
 } // OHOS
 
diff --git a/tools/hc-gen/src/token.h b/tools/hc-gen/src/token.h
index 80c16d2552a0abb77228a6bfa1a005acbd66d1d7..cd27c22f7f8a04d2aeab9d0708d2632d47e5e795 100644
--- a/tools/hc-gen/src/token.h
+++ b/tools/hc-gen/src/token.h
@@ -42,6 +42,8 @@ struct Token {
     friend std::ostream &operator<<(std::ostream &stream, const Token &t);
 };
 
+std::ostream& operator<<(std::ostream &s, const Token &t);
+
 std::string TokenType2String(int32_t type);
 
 } // Hardware