Arduino compile error - Azure IoT libraries

Arduino: 1.8.2 (Mac OS X), Board: “Arduino Ethernet”

In file included from /Users/alantwigg/Documents/Arduino/libraries/AzureIoTHub/src/AzureIoTHub.h:9:0,
from /Users/alantwigg/Documents/Arduino/Lamp_Controller_MQTT/Lamp_Controller_MQTT.ino:8:
/Users/alantwigg/Documents/Arduino/libraries/AzureIoTHub/src/sdk/serializer.h:42:19: fatal error: cstdlib: No such file or directory
#include
^
compilation terminated.
exit status 1
Error compiling for board Arduino Ethernet.

This report would have more information with
“Show verbose output during compilation”
option enabled in File → Preferences.

My sketch
#include <stdlib.h>
#include <stdio.h>
#include <stdint.h>
#include <time.h>
#include <SPI.h>

#include <AzureIoTHub.h>
#include <AzureIoTHubClient.h>
#include <AzureIoTUtility.h>

void setup() {
// put your setup code here, to run once:

}

void loop() {
// put your main code here, to run repeatedly:

}

My sketch

is NOT where the problem is. The problem is in the library that you downloaded from Uranus or some other mysterious location.

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From:
https://github.com/Azure/azure-iot-arduino

Currently supported hardware:

Atmel SAMD Based boards
Arduino/Genuino MKR1000
Arduino/Genuino Zero and WiFi Shield 101
Adafruit Feather M0
ESP8266 based boards with esp8266/arduino
SparkFun Thing
Adafruit Feather Huzzah

So you’re out of luck trying to use that library with an Arduino Ethernet. You will need to find a different library, get one of the compatible boards, or modify the library to support the Arduino Ethernet.

@PaulS - the most unhelpful response - why bother? Uranus - I think thats where you live !!
@pert - thankyou, I had overlooked the supported hardware\boards for this library.