Fuchsia uses the jiri tool to manage git repositories https://fuchsia.googlesource.com/jiri. This tool manages a set of repositories specified by a manifest.

See Source code layout for an overview of how the code is organized.

For how to build, see Fuchsia’s Getting Started doc.

Creating a new checkout

The bootstrap procedure requires that you have Go 1.6 or newer and Git installed and on your PATH.

This script will bootstrap a development environment for by first creating directories fuchsia.

curl -s "https://fuchsia.googlesource.com/fuchsia/+/master/scripts/bootstrap?format=TEXT" | base64 --decode | bash

This script will set up your development environment to track the HEAD of the fuchsia repository. If you wish to track a different repository at HEAD, you can use the fx set-petal command.

Setting up environment variables

Upon success, the bootstrap script should print a message recommending that you add the .jiri_root/bindirectory to your PATH. This will add jiri to your PATH, which is recommended and is assumed by other parts of the Fuchsia toolchain.

Another tool in .jiri_root/bin is fx, which helps configuring, building, running and debugging Fuchsia. See fx help for all available commands.

You can also source scripts/fx-env.sh, but sourcing fx-env.sh is not required. It defines a few environment variables that are commonly used in the documentation, such as $FUCHSIA_DIR, and provides useful shell functions, for instance fd to change directories effectively. See comments in scripts/fx-env.sh for more details.

Working without altering your PATH

If you don’t like having to mangle your environment variables, and you want jiri to “just work” depending on your current working directory, just copy jiri into your PATH. However, you must have write access (without sudo) to the directory into which you copy jiri. If you don’t, then jiri will not be able to keep itself up-to-date.

cp .jiri_root/bin/jiri ~/bin

To use the fx tool, you can either symlink it into your ~/bin directory:

ln -s `pwd`/scripts/fx ~/bin

or just run the tool directly as scripts/fx. Make sure you have jiri in your PATH.

Who works on the code

In the root of every repository and in many other directories are OWNERS files. These list email addresses of individuals who are familiar with and can provide code review for the contents of the containing directory. See owners.md for more discussion.

How to handle third-party code

See the guidelines on writing the metadata for third-party code in README.fuchsia files.


Authentication errors

If you see an error when you check out the code warning you about Invalid authentication credentials, you likely have a cookie in your $HOME/.gitcookies file that applies to repositories that jiri tries to check out anonymously (likely in the domain .googlesource.com). You can follow the onscreen directions to get passwords for the specific repositories, or you can delete the offending cookie from your .gitcookies file.


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