| commit | 306f3061249d3ac0a7b9e20860b08b67fac1fa43 | [log] [tgz] |
|---|---|---|
| author | Ben Bergkamp <benbergkamp@google.com> | Tue Oct 11 15:52:46 2022 +0000 |
| committer | Ben Bergkamp <benbergkamp@google.com> | Tue Oct 11 15:52:46 2022 +0000 |
| tree | 7bc4db0ceb907ebce6032338c4e65dfe30b11c1c | |
| parent | 12546535a9109c75ca02eff4c8a57ebbec6b4442 [diff] |
[embedder] register clang toolchain in workspace.bazel Change-Id: I1827399eff306d376d8d075d7873de738e2fc0fd Reviewed-on: https://fuchsia-review.googlesource.com/c/flutter-embedder/+/738382 Reviewed-by: Naud Ghebre <naudzghebre@google.com> Reviewed-by: Alexander Biggs <akbiggs@google.com>
The Flutter Embedder for Fuchsia is a new in-progress runtime for Flutter apps on Fuchsia. This runtime is built on top of Flutter's embedder platform.
This repository is a work in progress and should be considered experimental.
If you're using WSL2 (Windows Subsystem for Linux), see SETUP_WINDOWS.md first.
Set $FUCHSIA_EMBEDDER_DIR to your flutter-embedder.git checkout location, for example ~/flutter-embedder.
export FUCHSIA_EMBEDDER_DIR=$HOME/flutter-embedder
Bootstrap the repository's dependencies:
$FUCHSIA_EMBEDDER_DIR/scripts/bootstrap.sh
This script initializes tools (including bazel and ffx), installs some Git hooks and downloads the workstation_eng.qemu-x64 product bundle, which you can use to run the examples below.
Start the emulator.
If running in a graphical environment:
$FUCHSIA_EMBEDDER_DIR/tools/ffx emu start workstation_eng.qemu-x64
If running in a terminal environment:
$FUCHSIA_EMBEDDER_DIR/tools/ffx emu start --headless workstation_eng.qemu-x64
The workflow below also supports Fuchsia builds from source that are within Fuchsia's SDK compatibility window (six weeks).
Set the default target in ffx to be fuchsia-emulator:
$FUCHSIA_EMBEDDER_DIR/tools/ffx target default set fuchsia-emulator
Run an example component:
$FUCHSIA_EMBEDDER_DIR/scripts/build_and_run_example.sh hello_flutter
To watch logs for the example component, run:
$FUCHSIA_EMBEDDER_DIR/scripts/build_and_run_example.sh hello_flutter --log
If you want to watch all logs, run $FUCHSIA_EMBEDDER_DIR/tools/ffx log in a separate terminal.
To watch FIDL calls for the example component, run:
$FUCHSIA_EMBEDDER_DIR/scripts/build_and_run_example.sh hello_flutter --fidl
Caveats:
--fidl currently requires setting $FUCHSIA_DIR to a Fuchsia source checkout with a build in $FUCHSIA_DIR/out/default. This directory is only used to read IR files for FIDL, you can still use the workstation_eng.qemu-x64 product bundle with --fidl.
--fidl attaches after the component has been run, so it does not pick up FIDL calls made when the component starts.
TODO(akbiggs): Work with Bazel SDK team to get proper support for --fidl.
TODO(akbiggs): The app occasionally gets stuck on a loading screen instead of rendering. Re-running the app usually fixes it. We need to fix this.
Running the Flutter app is handled by the Flutter Engine's embedder platform code. This code is compiled into a shared library called libflutter_engine.so, which we can interact with using the embedder.h header.
If you need to make changes to this Flutter Engine code (for example for testing a new API in embedder.h with this embedder) see making_engine_changes.md for instructions. This isn‘t required for changes to only flutter-embedder.git’s source code.
See git_workflow.md.