fix Makefile

Makefile

@@ -23,6 +23,11 @@ SRCS = $(wildcard $(SRC_DIR)/*.c)
 OBJS = $(SRCS:$(SRC_DIR)/%.c=$(BUILD_DIR)/%.o)
 TARGET_PATH = $(BIN_DIR)/$(TARGET)
 
+
+# ===== CREATE FOLDERS =====
+$(BUILD_DIR) $(BIN_DIR):
+	mkdir -p $@
+
 # ===== COMPILATION PATTERN RULE =====
 $(BUILD_DIR)/%.o: $(SRC_DIR)/%.c | $(BUILD_DIR)
 	$(CC) $(CPPFLAGS) $(CFLAGS) -c $< -o $@