The code for this recipe is available at https://github.com/dev-cafe/cmake-cookbook/tree/v1.0/chapter-02/recipe-04 and has a C++ example. The recipe is valid with CMake version 3.5 (and higher) and has been tested on GNU/Linux, macOS, and Windows.
The advent of 64-bit integer arithmetic in 1970s supercomputing and 64-bit addressing in the early 2000s for personal computers has widened the memory-addressing range, and significant resources have been invested into porting code that was hardcoded for 32-bit architectures to enable 64-bit addressing. A number of blog posts, such as https://www.viva64.com/en/a/0004/, are devoted to discussing typical issues and solutions in porting C++ code to 64-bit platforms. It is very much advisable to program in a way that avoids explicitly hardcoded limits, but you may be in a situation where you need...
