Meson Build System

Meson is a fast and user-friendly build system designed to be as fast as possible while providing a clean, readable configuration syntax. Created by Jussi Pakkanen starting in 2013, Meson is written in Python but generates Ninja build files for maximum performance, combining the ease of configuration of high-level build tools with the raw speed of Ninja. With over 6,000 stars as of 2026, Meson has been adopted by major projects including GNOME, Xorg, systemd, Mesa (the OpenGL implementation), Wayland, Xfce, GStreamer, and many others. Key features include: clean configuration syntax using Meson-specific domain-specific language (not Python, but a custom language optimized for build configuration) in meson.build files, native support for multiple languages (C, C++, Fortran, D, Java, Rust, Swift, C#, and Vala), cross-compilation support via cross-file configuration (defining compilers, linkers, and system properties for target platforms), dependency management via pkg-config and the Wrap dependency system (downloading and building dependencies from source when system packages are unavailable), built-in test runner (meson test) with parallel test execution and TAP protocol support, installation and packaging support, subproject organization with meson.subproject() for multi-repository builds, custom targets for code generation tools, Gir and GObject introspection integration for GNOME projects, Vala compiler integration, configuration data objects (configure_file for generating config.h from templates), and a Python module for pure-Python projects. Meson is particularly popular in the Linux desktop ecosystem (GNOME uses Meson exclusively since version 3.28).