| commit | c2859efed0a865637a3c760392fd90585163b44a | [log] [tgz] |
|---|---|---|
| author | Sylvain Defresne <sdefresne@chromium.org> | Fri Jun 12 19:58:36 2020 +0200 |
| committer | Commit Bot <commit-bot@chromium.org> | Fri Jun 12 18:11:04 2020 +0000 |
| tree | 7c6c044fa84c9aa3a7b382213753a7b7b39a60bd | |
| parent | 5cc3b79e0992cde331792c52acd2241438768dc8 [diff] |
Force the use of "Legacy Build System" in generated Xcode projects Xcode 10.0+ supports two build systems named "Legacy Build System" and "New Build System". Trying to build the project using the "New Build System" results in cryptic errors. Force the use of the "Legacy Build System" as it is known to work well with the genenerated ninja project. As the configuration is done at the workspace level, generate an inner workspace for each project to hold the configuration (this allow users to open the project instead of the workspace). Bug: chromium:1091876, chromium:852522 Change-Id: If2ad1c47d75677f532e90e411437b29c885d32e8 Reviewed-on: https://gn-review.googlesource.com/c/gn/+/8920 Commit-Queue: Sylvain Defresne <sdefresne@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.