Chicken Gumbo With Homemade Stock

Name: Chicken Gumbo With Homemade Stock
Ingredients: 1 tablespoon olive oil; 2 chicken breasts, on the bone; 1 chicken quarter, on the bone; salt, pepper and creole seasoning to taste; 2 carrots, chopped to 1 inch pieces; 2 celery ribs, chopped to 1 inch pieces; 1⁄2 medium onion, quartered with skin on; 1 teaspoon minced garlic; 2 bay leaves; 8 cups water; 2 tablespoons chicken bouillon; 1⁄2 cup browned flour; 1 cup onion, chopped; 1 cup green bell pepper, chopped; 3⁄4 cup celery, chopped; 1 tablespoon creole seasoning; 1⁄2-1 teaspoon chili powder (optional); salt and pepper; 1 tablespoon gumbo file powder; 3 1⁄2 cups shredded chicken; 9 ounces smoked sausage; 8 cups chicken stock