Clone this repo:
  1. ea9f736 Add missing Apache license header, fix #1781 by Jan Niklas Hasse · 11 days ago master upstream/master
  2. 52649de bugfix: Process escaped colon in GCC depfiles. (#1774) by zero9178 · 2 weeks ago
  3. cf021f3 MinGW now has _mktemp_s, use overload with size parameter by Jan Niklas Hasse · 3 weeks ago
  4. c6148b0 GitHub Actions: Run ninja_test directly by Jan Niklas Hasse · 3 weeks ago
  5. 9a77d91 Merge pull request #1769 from scivision/pytest_win by Jan Niklas Hasse · 5 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: