https://en.cppreference.com/w/c/comment

include/Consts.h

@@ -1,33 +1,47 @@
 #pragma once
 
-//=================Firmeare=================
+//
+// Firmware
+//
 #define FIRMWARE_NAME "esp8266-iotm"
 #define FIRMWARE_VERSION 257
 #define FLASH_4MB true
 
-//=================System===================
+//
+// System
+//
 #define NUM_BUTTONS 6
 #define LED_PIN 2
 
-//=================MQTT=====================
+//
+// MQTT
+//
 #define MQTT_RECONNECT_INTERVAL 20000
 
-//===============Telemetry==================
+//
+// Telemetry
+//
 #define TELEMETRY_UPDATE_INTERVAL_MIN 60
 
-//=============Configuration================
+//
+// Configuration
+//
 #define DEVICE_CONFIG_FILE "s.conf.csv"
 #define DEVICE_SCENARIO_FILE "s.scen.txt"
 
-//=============System parts=================
+//
+// System parts
+//
 //#define OTA_UPDATES_ENABLED
 //#define MDNS_ENABLED
 //#define WEBSOCKET_ENABLED
 //#define LAYOUT_IN_RAM
 //#define UDP_ENABLED
-#define SSDP_EN
+#define SSDP_ENABLED
 
-//=========Sensors enable/disable===========
+//
+// Sensors enable/disable
+//
 #define TANK_LEVEL_SAMPLES 10
 #define LEVEL_ENABLED
 #define ANALOG_ENABLED
@@ -36,11 +50,15 @@
 #define BMP_ENABLED
 #define BME_ENABLED
 
-//=========Gears enable/disable===========
+//
+// Gears enable/disable
+//
 #define STEPPER_ENABLED
 #define SERVO_ENABLED
 
-//=========Other enable/disable===========
+//
+// Other enable/disable
+//
 #define LOGGING_ENABLED
 #define SERIAL_ENABLED
 #define PUSH_ENABLED

include/SSDP.h

@@ -4,8 +4,6 @@
 
 #include "Consts.h"
 
-#ifdef SSDP_EN
-extern void SsdpInit();
-extern String xmlNode(String tags, String data);
-extern String decToHex(uint32_t decValue, byte desiredStringLength);
+#ifdef SSDP_ENABLED
+void SsdpInit();
 #endif

src/SSDP.cpp

@@ -1,15 +1,19 @@
-
 #include "SSDP.h"
 
 #include "Global.h"
 
-#ifdef SSDP_EN
+#ifdef SSDP_ENABLED
 #ifdef ESP8266
 #include <ESP8266SSDP.h>
 #endif
 #ifdef ESP32
 #include <ESP32SSDP.h>
 #endif
+
+String xmlNode(String tags, String data);
+
+String decToHex(uint32_t decValue, byte desiredStringLength);
+
 //39164
 //457684
 void SsdpInit() {