tree 1eb33b5863f292f5282cab93a0371f615f1d303b
parent 704fe5e663d7e02f8e375e0bf8617a1aacc4903c
author Chinmay Garde <chinmaygarde@google.com> 1557189813 +0000
committer commit-bot@chromium.org <commit-bot@chromium.org> 1557189813 +0000

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>