diff --git a/examples/AbsoluteMouse/AbsoluteMouse.ino b/examples/AbsoluteMouse/AbsoluteMouse.ino
index 89c762d..4abccd9 100644
--- a/examples/AbsoluteMouse/AbsoluteMouse.ino
+++ b/examples/AbsoluteMouse/AbsoluteMouse.ino
@@ -11,7 +11,7 @@
 */
 
 #include "HID.h"
-#include "AbsoluteMouse.h"
+#include "HID-Project.h"
 
 const int pinLed = LED_BUILTIN;
 const int pinButtonClick = 2;
diff --git a/examples/Consumer/Consumer.ino b/examples/Consumer/Consumer.ino
index 1590007..fa75e26 100644
--- a/examples/Consumer/Consumer.ino
+++ b/examples/Consumer/Consumer.ino
@@ -10,7 +10,7 @@
 */
 
 #include "HID.h"
-#include "Consumer.h"
+#include "HID-Project.h"
 
 const int pinLed = LED_BUILTIN;
 const int pinButton = 2;
diff --git a/examples/Gamepad/Gamepad.ino b/examples/Gamepad/Gamepad.ino
index 008df47..bff18da 100644
--- a/examples/Gamepad/Gamepad.ino
+++ b/examples/Gamepad/Gamepad.ino
@@ -9,9 +9,8 @@
   https://github.com/NicoHood/HID/wiki/Gamepad-API
 */
 
-#include "Mouse.h"
 #include "HID.h"
-#include "Gamepad.h"
+#include "HID-Project.h"
 
 const int pinLed = LED_BUILTIN;
 const int pinButton = 2;
diff --git a/examples/System/System.ino b/examples/System/System.ino
index a3308b5..92445d6 100644
--- a/examples/System/System.ino
+++ b/examples/System/System.ino
@@ -10,7 +10,7 @@
 */
 
 #include "HID.h"
-#include "System.h"
+#include "HID-Project.h"
 
 const int pinLed = LED_BUILTIN;
 const int pinButtonS = 2;
diff --git a/library.properties b/library.properties
index 62d0c8c..e75184e 100644
--- a/library.properties
+++ b/library.properties
@@ -7,3 +7,4 @@ paragraph=Includes Consumer, System and Gamepad. Also compatible with Arduino Un
 category=Device Control
 url=https://github.com/NicoHood/HID
 architectures=*
+alinkage=true
diff --git a/src/AbsoluteMouse.h b/src/AbsoluteMouse.h
index de6647a..94b2eee 100644
--- a/src/AbsoluteMouse.h
+++ b/src/AbsoluteMouse.h
@@ -27,7 +27,7 @@ THE SOFTWARE.
 
 #if !defined(_USING_HID)
 
-#warning "Using legacy HID core (non pluggable)"
+#error "This is not an USB AVR or you use an old version of the IDE."
 
 #else
 
@@ -48,7 +48,7 @@ THE SOFTWARE.
 // but the last 3 wont do anything from what I tested
 #define MOUSE_ALL (MOUSE_LEFT | MOUSE_RIGHT | MOUSE_MIDDLE | MOUSE_PREV | MOUSE_NEXT)
 
-static const u8 _hidReportDescriptor[] PROGMEM = {
+static const uint8_t _absmouseReportDescriptor[] PROGMEM = {
 	/*  Mouse absolute */
     0x05, 0x01,                      /* USAGE_PAGE (Generic Desktop)	  54 */
     0x09, 0x02,                      /* USAGE (Mouse) */
@@ -137,8 +137,8 @@ private:
 public:
 	inline AbsMouse_(void) {
 		static HID_Descriptor cb = {
-			.length = sizeof(_hidReportDescriptor),
-			.descriptor = _hidReportDescriptor,
+			.length = sizeof(_absmouseReportDescriptor),
+			.descriptor = _absmouseReportDescriptor,
 		};
 		static HIDDescriptorListNode node(&cb);
 		HID.AppendDescriptor(&node);
diff --git a/src/Consumer.h b/src/Consumer.h
index 51670a5..041660a 100644
--- a/src/Consumer.h
+++ b/src/Consumer.h
@@ -27,7 +27,7 @@ THE SOFTWARE.
 
 #if !defined(_USING_HID)
 
-#warning "Using legacy HID core (non pluggable)"
+#error "This is not an USB AVR or you use an old version of the IDE."
 
 #else
 
@@ -67,7 +67,7 @@ THE SOFTWARE.
 #define CONSUMER_BROWSER_REFRESH	0x227
 #define CONSUMER_BROWSER_BOOKMARKS	0x22A
 
-static const u8 _hidReportDescriptor[] PROGMEM = {
+static const uint8_t _consumerReportDescriptor[] PROGMEM = {
 	/* Consumer Control (Sound/Media keys) */
 	0x05, 0x0C,									/* usage page (consumer device) */
 	0x09, 0x01, 								/* usage -- consumer control */
@@ -103,8 +103,8 @@ class Consumer_ {
 public:
 	inline Consumer_(void) {
 		static HID_Descriptor cb = {
-			.length = sizeof(_hidReportDescriptor),
-			.descriptor = _hidReportDescriptor,
+			.length = sizeof(_consumerReportDescriptor),
+			.descriptor = _consumerReportDescriptor,
 		};
 		static HIDDescriptorListNode node(&cb);
 		HID.AppendDescriptor(&node);
diff --git a/src/Gamepad.h b/src/Gamepad.h
index 97d2e20..ecd478d 100644
--- a/src/Gamepad.h
+++ b/src/Gamepad.h
@@ -27,7 +27,7 @@ THE SOFTWARE.
 
 #if !defined(_USING_HID)
 
-#warning "Using legacy HID core (non pluggable)"
+#error "This is not an USB AVR or you use an old version of the IDE."
 
 #else
 
@@ -50,7 +50,7 @@ THE SOFTWARE.
 #define GAMEPAD_DPAD_LEFT 7
 #define GAMEPAD_DPAD_UP_LEFT 8
 
-static const u8 _hidReportDescriptor[] PROGMEM = {
+static const uint8_t _gamepadReportDescriptor[] PROGMEM = {
 	/* Gamepad with 32 buttons and 6 axis*/
 	0x05, 0x01,							/* USAGE_PAGE (Generic Desktop) */
 	0x09, 0x04,							/* USAGE (Joystick) */
@@ -162,8 +162,8 @@ class Gamepad_{
 public:
 	inline Gamepad_(void){
 		static HID_Descriptor cb = {
-			.length = sizeof(_hidReportDescriptor),
-			.descriptor = _hidReportDescriptor,
+			.length = sizeof(_gamepadReportDescriptor),
+			.descriptor = _gamepadReportDescriptor,
 		};
 		static HIDDescriptorListNode node(&cb);
 		HID.AppendDescriptor(&node);
diff --git a/src/HID-Project.h b/src/HID-Project.h
index e69de29..9d17d30 100644
--- a/src/HID-Project.h
+++ b/src/HID-Project.h
@@ -0,0 +1,36 @@
+/*
+Copyright (c) 2014-2015 NicoHood
+See the readme for credit to other people.
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
+*/
+
+// Include guard
+#pragma once
+
+// Software version
+#define HID_PROJECT_VERSION 240
+
+#include <Arduino.h>
+
+// Include all HID libraries (.a linkage required to work) properly
+#include "AbsoluteMouse.h"
+#include "Consumer.h"
+#include "Gamepad.h"
+#include "System.h"
diff --git a/src/System.h b/src/System.h
index 5cb4d13..fbe42c1 100644
--- a/src/System.h
+++ b/src/System.h
@@ -27,7 +27,7 @@ THE SOFTWARE.
 
 #if !defined(_USING_HID)
 
-#warning "Using legacy HID core (non pluggable)"
+#error "This is not an USB AVR or you use an old version of the IDE."
 
 #else
 
@@ -43,7 +43,7 @@ THE SOFTWARE.
 #define SYSTEM_SLEEP	0x82
 #define SYSTEM_WAKE_UP	0x83
 
-static const u8 _hidReportDescriptor[] PROGMEM = {
+static const uint8_t _systemReportDescriptor[] PROGMEM = {
 	//TODO limit to system keys only?
 	/*  System Control (Power Down, Sleep, Wakeup, ...) */
 	0x05, 0x01,								/* USAGE_PAGE (Generic Desktop) */
@@ -73,8 +73,8 @@ class System_{
 public:
 	inline System_(void){
 		static HID_Descriptor cb = {
-			.length = sizeof(_hidReportDescriptor),
-			.descriptor = _hidReportDescriptor,
+			.length = sizeof(_systemReportDescriptor),
+			.descriptor = _systemReportDescriptor,
 		};
 		static HIDDescriptorListNode node(&cb);
 		HID.AppendDescriptor(&node);