nob.h is a build system automation tool for C projects that allows build scripts and execution logic to be defined directly in the C programming language. It provides a way to manage custom compiler orchestration and the sequence of shell commands required to transform source code into binaries.
The project is implemented as a header-only library, allowing build tooling to be integrated without a separate compilation step. It supports multi-stage build workflows, enabling the execution of configuration steps and the generation of intermediate files before final compilation.
The system handles process-based task execution by interfacing with operating system APIs to manage file system operations and spawn external system processes.