Clone this repo:
  1. d52a43d Merge pull request #1996 from digit-google/cleandead-preserves-inputs by Jan Niklas Hasse · 14 hours ago main master upstream/master
  2. 3907862 Merge pull request #1994 from afq984/1e408562-f801-4644-b703-46cd9c672400 by Jan Niklas Hasse · 5 days ago
  3. 45751fa compdb: escape control characters in JSON strings by Li-Yu Yu · 7 days ago
  4. eba7a50 cleandead: Fix the logic to preserve inputs. by David 'Digit' Turner · 8 days ago
  5. c8f8f2a Merge pull request #1991 from zmodem/filter_filenames_less by Nico Weber · 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: