Ninja Build System

Ninja is a small, focus-driven build system with a primary emphasis on speed, making it particularly well-suited for large, complex software projects like web browsers or operating systems. Unlike more feature-rich systems like Make, Ninja is designed as a low-level backend and is not meant for writing build scripts by hand. Instead, higher-level build configuration tools such as CMake, Meson, or gyp generate `.ninja` input files, which describe the exact commands needed to compile the project. This division of labor allows Ninja to do one thing exceptionally well: execute the build commands as quickly as possible, especially for incremental builds where its minimal dependency checking overhead provides a significant performance advantage.

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2. Getting Started with Ninja