On a Mac, GCC comes in particular as part of a nice package called Xcode, which is a full IDE (Integrated Development Environment: a software that makes writing and managing code a simpler process). (For Windows and linux versions click here).
The aim is to install on a Mac and use the GCC compiler, which allows to create executable programs from a C or C++ source code. I have thus made the tutorial a very explicit step-by-step one with screenshots. Introduction: This tutorial has been written for the mathematician who knows very little about programming yet who wishes to use a given source code as a “black-box”, that is to produce an executable program from this code, and run that program on the Mac using one’s own data files.
