This document summarizes key technical decisions for Guillaume.

Programming Languages

Guillaume is written in C++20.

Reasons:

• High performance and low-level control.
• Mature ecosystem for graphics and systems programming.
• Strong fit for cross-platform native applications.

Libraries

• Utility: Shared helpers and data structures.
• SQLite: Embedded storage engine for local persistence.
• GoogleTest: Unit testing framework for verification.

Build System

Guillaume uses CMake.

• Source files are under sources.
• Headers are under headers.
• External dependencies are integrated with FetchContent.

This setup keeps the project portable and reproducible across environments.