Automatic Function Multi-Versioning for GCC Introduction: For this project, I will be working with the GCC compiler and learning how it works by building it from scratch on an AArch64 platform (which is 64-Bit). Setting up GCC like this lets me dig into how it compiles code and optimizes functions for different CPUs, especially as the goal is to experiment with Automatic Function Multi-Versioning (AFMV). Guide to Building GCC for AArch64 Step 1: Cloning the Source Code To get started, I needed the GCC source code. Cloning from the official GCC repository keeps things organized and up to date. Here’s the command to clone it: git clone git://gcc.gnu.org/git/gcc.git ~/gcc This creates a directory called ~/gcc , where all the source files are stored. The cloning process might take a few minutes, depending on your internet speed. Step 2: Setting Up a Build Directory It’s recommended to create a separate directory for building GCC instead of doing it directly in the source directory. ...