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Creating Ahead of Time (AOT) image
Joel Winarske edited this page Dec 10, 2021
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3 revisions
Dart VM version in SDK needs to match the one implemented in Flutter Engine.
Once you have a Flutter Engine with matching Dart VM to Flutter SDK, then you can do this:
${FLUTTER_SDK}/bin/cache/dart-sdk/bin/dart \
--verbose \
--disable-analytics \
--disable-dart-dev ${FLUTTER_SDK}/bin/cache/artifacts/engine/linux-x64/frontend_server.dart.snapshot \
--sdk-root ${FLUTTER_SDK}/bin/cache/artifacts/engine/common/flutter_patched_sdk_product/ \
--target=flutter \
--no-print-incremental-dependencies \
-Ddart.vm.profile=false -Ddart.vm.product=true \
--aot --tfa \
--packages .dart_tool/package_config.json \
--output-dill .dart_tool/flutter_build/*/app.dill \
--depfile .dart_tool/flutter_build/*/kernel_snapshot.d \
package:${PUBSPEC_APPNAME}/main.dart
${ENGINE_SDK}/clang_x64/gen_snapshot \
--snapshot_kind=app-aot-elf \
--elf=libapp.so \
--strip \
.dart_tool/flutter_build/*/app.dill
gen_snapshot is machine architecture dependent. You cannot use any gen_snapshot. If you are targeting desktop build, gen_snapshot (Linux x86_64) comes from Flutter SDK. If you are performing cross compilation using Yocto (meta-flutter), then gen_snapshot is available in /usr/share/flutter/engine_sdk.zip
.
References
https://github.com/meta-flutter/meta-flutter/blob/honister/classes/flutter-app.bbclass#L46