commit | e87aa228de8740ba61a32054a6e31432fca71536 | [log] [tgz] |
---|---|---|
author | Sylvain Defresne <sdefresne@chromium.org> | Tue Nov 19 17:28:47 2019 +0100 |
committer | Commit Bot <commit-bot@chromium.org> | Mon Dec 09 23:52:48 2019 +0000 |
tree | a9d66dac101a72da784c37f34624a0dd6748c364 | |
parent | fe36c7c1bfc4798084d7e6de670b2b0f36182dc0 [diff] |
Ignore SIGTRAP in child process on macOS When running gn under Xcode (e.g. when debugging), the child process is sent a SIGTRAP signal and immediately dies as it is not handled. This makes gn consider that action, action_foreach and exec_script have failed due to the signalled state of the child process. To prevent this, ignore the SIGTRAP signal on macOS in the child process. Bug: none Change-Id: Ic28312939d646db7d49c767d37566f3a8ed2c923 Reviewed-on: https://gn-review.googlesource.com/c/gn/+/6662 Reviewed-by: Brett Wilson <brettw@chromium.org> Commit-Queue: 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.