Clone this repo:
  1. f73698e Include information about the bug database in gn's README.md. by Daniel Bratell · 2 days ago master
  2. a676103 Sort import() lines by group by Scott Graham · 9 days ago
  3. edbcffa Use FilePathToUTF8/UTF8ToFilePath for conversion to/from string by Petr Hosek · 11 days ago
  4. 1d45335 Ensure that Xcode SDK is installed on macOS by Petr Hosek · 10 days ago
  5. 3084c11 Use getenv to get TMPDIR path on macOS as well by Petr Hosek · 11 days ago

GN

GN is a meta-build system that generates build files for Ninja. There is documentation in docs/.

Getting started

git clone https://gn.googlesource.com/gn
cd gn
python build/gen.py
ninja -C out
# To run tests:
out/gn_unittests

On Windows, it is expected that cl.exe, link.exe, and lib.exe can be found in PATH, so you'll want to run from a Visual Studio command prompt, or similar.

On Linux and Mac, the default compiler is clang++, a recent version is expected to be found in PATH. This can be overridden by setting CC, CXX, and AR.

Reporting bugs

If you find a bug, you can see if it is known or report it in the bug database.

Sending patches

GN uses Gerrit for code review. The short version of how to patch is:

Register at https://gn-review.googlesource.com.

... edit code ...
ninja -C out && out/gn_unittests

Then, to upload a change for review:

git commit
git cl upload --gerrit

When revising a change, use:

git commit --amend
git cl upload --gerrit

which will add the new changes to the existing code review, rather than creating a new one.

We ask that all contributors sign Google's Contributor License Agreement (either individual or corporate as appropriate, select ‘any other Google project’).

Community

You may ask questions and follow along w/ GN‘s development on Chromium’s gn-dev@ Google Group.