| commit | 0310dbe8411c76e7f17643fbe28436cf1391c2ec | [log] [tgz] |
|---|---|---|
| author | Bruce Dawson <brucedawson@chromium.org> | Fri Oct 30 21:47:16 2020 -0700 |
| committer | Commit Bot <commit-bot@chromium.org> | Sat Oct 31 17:58:57 2020 +0000 |
| tree | 5738ad50a338affdfc546a622851a63fe32c3342 | |
| parent | 7e2a0f0a8a323fa6b808d4ff486ac1d071f21bc7 [diff] |
Improved Python 3 support In order to better support building Chromium with Python 3 on Windows it is helpful if --script-executable=c:\src\depot_tools\python3.bat will translate python3.bat to the appropriate python.exe path. This is mostly just a matter of calling PythonBatToExe from FillPythonPath, but it was also necessary to update PythonBatToExe to make it's Python print statement be Python 3 compatible. This change also means that if python.bat is found in the path during normal initialization and points to Python 3 then this will succeed instead of printing a cryptic error message. Change-Id: I7339034c6c8e817a386ca19f57f64401a3d49b2c Reviewed-on: https://gn-review.googlesource.com/c/gn/+/10560 Commit-Queue: Brett Wilson <brettw@chromium.org> Reviewed-by: Brett Wilson <brettw@chromium.org>
GN is a meta-build system that generates build files for Ninja.
Related resources:
You can download the latest version of GN binary for Linux, macOS and Windows.
Alternatively, you can build GN from source:
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.
There is a simple example in examples/simple_build directory that is a good place to get started with the minimal configuration.
To build and run the simple example with the default gcc compiler:
cd examples/simple_build ../../out/gn gen -C out ninja -C out ./out/hello
For a maximal configuration see the Chromium setup:
and the Fuchsia setup:
If you find a bug, you can see if it is known or report it in the bug database.
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 push origin HEAD:refs/for/master
The first time you do this you'll get an error from the server about a missing change-ID. Follow the directions in the error message to install the change-ID hook and run git commit --amend to apply the hook to the current commit.
When revising a change, use:
git commit --amend git push origin HEAD:refs/for/master
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’).
You may ask questions and follow along with GN‘s development on Chromium’s gn-dev@ Google Group.