Embedded Programming with Modern C++ Cookbook

How to do it...

We will create a simple program that can detect the endianness of the target platform. Follow these steps to do so:

1. In your working directory, that is, ~/test, create a subdirectory called endianness.
2. Use your favorite text editor to create a file called loop.cpp in the loop subdirectory. Copy the following code snippet into the endianness.cpp file:

#include <iostream>int main() {  union {    uint32_t i;    uint8_t c[4];  } data;  data.i = 0x01020304;  if (data.c[0] == 0x01) {    std::cout << "Big-endian" << std::endl;  } else {    std::cout << "Little-endian" << std::endl;  }}

3. Create a file called CMakeLists.txt in the loop subdirectory with the following content:

cmake_minimum_required(VERSION 3.5.1)project(endianness)add_executable(endianness ...