| commit | de542971d3cbc4b9d42e603667ac3c24b639a02a | [log] [tgz] |
|---|---|---|
| author | Nico Weber <thakis@chromium.org> | Sat Nov 16 15:32:18 2019 -0500 |
| committer | Commit Bot <commit-bot@chromium.org> | Mon Nov 18 17:22:55 2019 +0000 |
| tree | 4240ace76699707397146971994051ceaee67654 | |
| parent | 47e15b769bd7d15c138b6d1c24e5f6c506834dfc [diff] |
gen.py: Stop writing rule cc, GN has no C code. Collapse cflags and cflags_cc into just cflags. Also remove $defines from all the template files, nothing ever sets it. Stop getting include_dirs and cflags off settings, it's never set. 'tool' is always 'cxx', so inline that and stop setting it on each binary. No behavior change. Bug: none Change-Id: Ic01687acbd1e815151ec0308196339b3a2944e0c Reviewed-on: https://gn-review.googlesource.com/c/gn/+/6641 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
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.