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  1. 48a9fb5 Merge pull request #1804 from ninja-build/nico-patch-2 by Nico Weber · 3 weeks ago master
  2. 89984d5 Merge pull request #1803 from ninja-build/nico-patch-1 by Nico Weber · 3 weeks ago
  3. b191404 Include sys/select.h in by Nico Weber · 3 weeks ago
  4. 580f57f Include unistd.h in by Nico Weber · 3 weeks ago
  5. 8948ec2 GitHub Actions: Switch to MSVC's subdirectory by Jan Niklas Hasse · 4 weeks ago


Ninja is a small build system with a focus on speed.

See the manual or doc/manual.asciidoc included in the distribution for background and more details.

Binaries for Linux, Mac, and Windows are available at GitHub. Run ./ninja -h for Ninja help.

Installation is not necessary because the only required file is the resulting ninja binary. However, to enable features like Bash completion and Emacs and Vim editing modes, some files in misc/ must be copied to appropriate locations.

If you're interested in making changes to Ninja, read first.

Building Ninja itself

You can either build Ninja via the custom generator script written in Python or via CMake. For more details see the wiki.


./ --bootstrap

This will generate the ninja binary and a file you can now use to build Ninja with itself.


cmake -Bbuild-cmake -H.
cmake --build build-cmake

The ninja binary will now be inside the build-cmake directory (you can choose any other name you like).

To run the unit tests: