Allow building Dart with Fuchsia SDK enabled buildroots.

The Fuchsia SDK can now be consumed by non-Fuchsia buildroots to produce
Fuchsia artifacts.

The Fuchsia SDK comes with a JSON manifest that describes the various SDK
"parts". GN targets are stamped for each of these parts. The location of these
GN targets can be configured. That location is set to |fuchsia_sdk_root| in
each buildroot. This variable is defined in //build/fuchsia/sdk.gni in each
buildroot. For buildroots that don't care or know about the Fuchsia SDK, that
file may not exist. This is why, the import of that file is guarded behind
the is_fuchsia flag. When the Fuchsia SDK is enabled, that file will define
values for two required variable |using_fuchsia_sdk| and |fuchsia_sdk_root|.

The first flag defines if the SDK is being used. If unset (but defined), the
builds are in-tree. Eventually we want only SDK builds. |fuchsia_sdk_root|
is set to the spot in the buildroot where the GN targets for the SDK parts
are stamped.

Change-Id: I604612c8d6a21efb07b323610e80b596abc1a6dd
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/101540
Reviewed-by: Ryan Macnak <rmacnak@google.com>
Commit-Queue: Chinmay Garde <chinmaygarde@google.com>
7 files changed
tree: 1eb33b5863f292f5282cab93a0371f615f1d303b
  1. .github/
  2. build/
  3. client/
  4. docs/
  5. pkg/
  6. runtime/
  7. samples/
  8. samples-dev/
  9. sdk/
  10. tests/
  11. third_party/
  12. tools/
  13. utils/
  14. .clang-format
  15. .gitattributes
  16. .gitconfig
  17. .gitignore
  18. .gn
  19. .mailmap
  20. .packages
  21. .vpython
  22. AUTHORS
  23. BUILD.gn
  24. CHANGELOG.md
  25. codereview.settings
  26. CONTRIBUTING.md
  27. DEPS
  28. LICENSE
  29. PATENTS
  30. PRESUBMIT.py
  31. README.dart-sdk
  32. README.md
  33. WATCHLISTS
README.md

Dart

Dart is an open-source, scalable programming language, with robust libraries and runtimes, for building web, server, and mobile apps.

Using Dart

Visit the dartlang.org to learn more about the language, tools, getting started, and more.

Browse pub.dartlang.org for more packages and libraries contributed by the community and the Dart team.

Building Dart

If you want to build Dart yourself, here is a guide to getting the source, preparing your machine to build the SDK, and building.

There are more documents on our wiki.

Contributing to Dart

The easiest way to contribute to Dart is to file issues.

You can also contribute patches, as described in Contributing.

License & patents

See LICENSE and PATENTS.