packages/flutter_tools/lib/src/base/build.dart - mirrors/flutter - Git at Google

 // Copyright 2014 The Flutter Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.

 import 'package:process/process.dart';

 import '../artifacts.dart';
 import '../build_info.dart';
 import '../macos/xcode.dart';

 import 'file_system.dart';
 import 'logger.dart';
 import 'process.dart';

 /// A snapshot build configuration.
 class SnapshotType {
   SnapshotType(this.platform, this.mode)
     : assert(mode != null);

   final TargetPlatform? platform;
   final BuildMode mode;

   @override
   String toString() => '$platform $mode';
 }

 /// Interface to the gen_snapshot command-line tool.
 class GenSnapshot {
   GenSnapshot({
     required Artifacts artifacts,
     required ProcessManager processManager,
     required Logger logger,
   }) : _artifacts = artifacts,
        _processUtils = ProcessUtils(logger: logger, processManager: processManager);

   final Artifacts _artifacts;
   final ProcessUtils _processUtils;

   String getSnapshotterPath(SnapshotType snapshotType) {
     return _artifacts.getArtifactPath(
         Artifact.genSnapshot, platform: snapshotType.platform, mode: snapshotType.mode);
   }

   /// Ignored warning messages from gen_snapshot.
   static const Set<String> kIgnoredWarnings = <String>{
     // --strip on elf snapshot.
     'Warning: Generating ELF library without DWARF debugging information.',
     // --strip on ios-assembly snapshot.
     'Warning: Generating assembly code without DWARF debugging information.',
     // A fun two-part message with spaces for obfuscation.
     'Warning: This VM has been configured to obfuscate symbol information which violates the Dart standard.',
     '         See dartbug.com/30524 for more information.',
   };

   Future<int> run({
     required SnapshotType snapshotType,
     DarwinArch? darwinArch,
     Iterable<String> additionalArgs = const <String>[],
   }) {
     assert(darwinArch != DarwinArch.armv7);
     assert(snapshotType.platform != TargetPlatform.ios || darwinArch != null);
     final List<String> args = <String>[
       ...additionalArgs,
     ];

     String snapshotterPath = getSnapshotterPath(snapshotType);

     // iOS and macOS have separate gen_snapshot binaries for each target
     // architecture (iOS: armv7, arm64; macOS: x86_64, arm64). Select the right
     // one for the target architecture in question.
     if (snapshotType.platform == TargetPlatform.ios ||
         snapshotType.platform == TargetPlatform.darwin) {
       snapshotterPath += '_${getDartNameForDarwinArch(darwinArch!)}';
     }

     return _processUtils.stream(
       <String>[snapshotterPath, ...args],
       mapFunction: (String line) =>  kIgnoredWarnings.contains(line) ? null : line,
     );
   }
 }

 class AOTSnapshotter {
   AOTSnapshotter({
     this.reportTimings = false,
     required Logger logger,
     required FileSystem fileSystem,
     required Xcode xcode,
     required ProcessManager processManager,
     required Artifacts artifacts,
   }) : _logger = logger,
       _fileSystem = fileSystem,
       _xcode = xcode,
       _genSnapshot = GenSnapshot(
         artifacts: artifacts,
         processManager: processManager,
         logger: logger,
       );

   final Logger _logger;
   final FileSystem _fileSystem;
   final Xcode _xcode;
   final GenSnapshot _genSnapshot;

   /// If true then AOTSnapshotter would report timings for individual building
   /// steps (Dart front-end parsing and snapshot generation) in a stable
   /// machine readable form. See [AOTSnapshotter._timedStep].
   final bool reportTimings;

   /// Builds an architecture-specific ahead-of-time compiled snapshot of the specified script.
   Future<int> build({
     required TargetPlatform platform,
     required BuildMode buildMode,
     required String mainPath,
     required String outputPath,
     DarwinArch? darwinArch,
     String? sdkRoot,
     List<String> extraGenSnapshotOptions = const <String>[],
     required bool bitcode,
     String? splitDebugInfo,
     required bool dartObfuscation,
     bool quiet = false,
   }) async {
     assert(platform != TargetPlatform.ios || darwinArch != null);
     if (bitcode && platform != TargetPlatform.ios) {
       _logger.printError('Bitcode is only supported for iOS.');
       return 1;
     }

     if (!_isValidAotPlatform(platform, buildMode)) {
       _logger.printError('${getNameForTargetPlatform(platform)} does not support AOT compilation.');
       return 1;
     }

     final Directory outputDir = _fileSystem.directory(outputPath);
     outputDir.createSync(recursive: true);

     final List<String> genSnapshotArgs = <String>[
       '--deterministic',
     ];

     final bool targetingApplePlatform =
         platform == TargetPlatform.ios || platform == TargetPlatform.darwin;
     _logger.printTrace('targetingApplePlatform = $targetingApplePlatform');

     final bool extractAppleDebugSymbols =
         buildMode == BuildMode.profile || buildMode == BuildMode.release;
     _logger.printTrace('extractAppleDebugSymbols = $extractAppleDebugSymbols');

     // We strip snapshot by default, but allow to suppress this behavior
     // by supplying --no-strip in extraGenSnapshotOptions.
     bool shouldStrip = true;
     if (extraGenSnapshotOptions != null && extraGenSnapshotOptions.isNotEmpty) {
       _logger.printTrace('Extra gen_snapshot options: $extraGenSnapshotOptions');
       for (final String option in extraGenSnapshotOptions) {
         if (option == '--no-strip') {
           shouldStrip = false;
           continue;
         }
         genSnapshotArgs.add(option);
       }
     }

     final String assembly = _fileSystem.path.join(outputDir.path, 'snapshot_assembly.S');
     if (targetingApplePlatform) {
       genSnapshotArgs.addAll(<String>[
         '--snapshot_kind=app-aot-assembly',
         '--assembly=$assembly',
       ]);
     } else {
       final String aotSharedLibrary = _fileSystem.path.join(outputDir.path, 'app.so');
       genSnapshotArgs.addAll(<String>[
         '--snapshot_kind=app-aot-elf',
         '--elf=$aotSharedLibrary',
       ]);
     }

     // When buiding for iOS and splitting out debug info, we want to strip
     // manually after the dSYM export, instead of in the `gen_snapshot`.
     final bool stripAfterBuild;
     if (targetingApplePlatform) {
       stripAfterBuild = shouldStrip;
       if (stripAfterBuild) {
         _logger.printTrace('Will strip AOT snapshot manually after build and dSYM generation.');
       }
     } else {
       stripAfterBuild = false;
       if (shouldStrip) {
         genSnapshotArgs.add('--strip');
         _logger.printTrace('Will strip AOT snapshot during build.');
       }
     }

     if (platform == TargetPlatform.android_arm) {
       // Use softfp for Android armv7 devices.
       // TODO(cbracken): eliminate this when we fix https://github.com/flutter/flutter/issues/17489
       genSnapshotArgs.add('--no-sim-use-hardfp');

       // Not supported by the Pixel in 32-bit mode.
       genSnapshotArgs.add('--no-use-integer-division');
     }

     // The name of the debug file must contain additional information about
     // the architecture, since a single build command may produce
     // multiple debug files.
     final String archName = getNameForTargetPlatform(platform, darwinArch: darwinArch);
     final String debugFilename = 'app.$archName.symbols';
     final bool shouldSplitDebugInfo = splitDebugInfo?.isNotEmpty ?? false;
     if (shouldSplitDebugInfo) {
       _fileSystem.directory(splitDebugInfo)
         .createSync(recursive: true);
     }

     // Optimization arguments.
     genSnapshotArgs.addAll(<String>[
       // Faster async/await
       if (shouldSplitDebugInfo) ...<String>[
         '--dwarf-stack-traces',
         '--save-debugging-info=${_fileSystem.path.join(splitDebugInfo!, debugFilename)}',
       ],
       if (dartObfuscation)
         '--obfuscate',
     ]);

     genSnapshotArgs.add(mainPath);

     final SnapshotType snapshotType = SnapshotType(platform, buildMode);
     final int genSnapshotExitCode = await _genSnapshot.run(
       snapshotType: snapshotType,
       additionalArgs: genSnapshotArgs,
       darwinArch: darwinArch,
     );
     if (genSnapshotExitCode != 0) {
       _logger.printError('Dart snapshot generator failed with exit code $genSnapshotExitCode');
       return genSnapshotExitCode;
     }

     // On iOS and macOS, we use Xcode to compile the snapshot into a dynamic library that the
     // end-developer can link into their app.
     if (targetingApplePlatform) {
       return _buildFramework(
         appleArch: darwinArch!,
         isIOS: platform == TargetPlatform.ios,
         sdkRoot: sdkRoot,
         assemblyPath: assembly,
         outputPath: outputDir.path,
         bitcode: bitcode,
         quiet: quiet,
         stripAfterBuild: stripAfterBuild,
         extractAppleDebugSymbols: extractAppleDebugSymbols
       );
     } else {
       return 0;
     }
   }

   /// Builds an iOS or macOS framework at [outputPath]/App.framework from the assembly
   /// source at [assemblyPath].
   Future<int> _buildFramework({
     required DarwinArch appleArch,
     required bool isIOS,
     String? sdkRoot,
     required String assemblyPath,
     required String outputPath,
     required bool bitcode,
     required bool quiet,
     required bool stripAfterBuild,
     required bool extractAppleDebugSymbols
   }) async {
     final String targetArch = getNameForDarwinArch(appleArch);
     if (!quiet) {
       _logger.printStatus('Building App.framework for $targetArch...');
     }

     final List<String> commonBuildOptions = <String>[
       '-arch',
       targetArch,
       if (isIOS)
         // When the minimum version is updated, remember to update
         // template MinimumOSVersion.
         // https://github.com/flutter/flutter/pull/62902
         '-miphoneos-version-min=11.0',
       if (sdkRoot != null) ...<String>[
         '-isysroot',
         sdkRoot,
       ],
     ];

     const String embedBitcodeArg = '-fembed-bitcode';
     final String assemblyO = _fileSystem.path.join(outputPath, 'snapshot_assembly.o');

     final RunResult compileResult = await _xcode.cc(<String>[
       ...commonBuildOptions,
       if (bitcode) embedBitcodeArg,
       '-c',
       assemblyPath,
       '-o',
       assemblyO,
     ]);
     if (compileResult.exitCode != 0) {
       _logger.printError('Failed to compile AOT snapshot. Compiler terminated with exit code ${compileResult.exitCode}');
       return compileResult.exitCode;
     }

     final String frameworkDir = _fileSystem.path.join(outputPath, 'App.framework');
     _fileSystem.directory(frameworkDir).createSync(recursive: true);
     final String appLib = _fileSystem.path.join(frameworkDir, 'App');
     final List<String> linkArgs = <String>[
       ...commonBuildOptions,
       '-dynamiclib',
       '-Xlinker', '-rpath', '-Xlinker', '@executable_path/Frameworks',
       '-Xlinker', '-rpath', '-Xlinker', '@loader_path/Frameworks',
       '-install_name', '@rpath/App.framework/App',
       if (bitcode) embedBitcodeArg,
       '-o', appLib,
       assemblyO,
     ];

     final RunResult linkResult = await _xcode.clang(linkArgs);
     if (linkResult.exitCode != 0) {
       _logger.printError('Failed to link AOT snapshot. Linker terminated with exit code ${linkResult.exitCode}');
       return linkResult.exitCode;
     }

     if (extractAppleDebugSymbols) {
       final RunResult dsymResult = await _xcode.dsymutil(<String>['-o', '$frameworkDir.dSYM', appLib]);
       if (dsymResult.exitCode != 0) {
         _logger.printError('Failed to generate dSYM - dsymutil terminated with exit code ${dsymResult.exitCode}');
         return dsymResult.exitCode;
       }

       if (stripAfterBuild) {
         // See https://www.unix.com/man-page/osx/1/strip/ for arguments
         final RunResult stripResult = await _xcode.strip(<String>['-x', appLib, '-o', appLib]);
         if (stripResult.exitCode != 0) {
           _logger.printError('Failed to strip debugging symbols from the generated AOT snapshot - strip terminated with exit code ${stripResult.exitCode}');
           return stripResult.exitCode;
         }
       }
     } else {
       assert(stripAfterBuild == false);
     }

     return 0;
   }

   bool _isValidAotPlatform(TargetPlatform platform, BuildMode buildMode) {
     if (buildMode == BuildMode.debug) {
       return false;
     }
     return const <TargetPlatform>[
       TargetPlatform.android_arm,
       TargetPlatform.android_arm64,
       TargetPlatform.android_x64,
       TargetPlatform.ios,
       TargetPlatform.darwin,
       TargetPlatform.linux_x64,
       TargetPlatform.linux_arm64,
       TargetPlatform.windows_x64,
     ].contains(platform);
   }
 }
	// Copyright 2014 The Flutter Authors. All rights reserved.
	// Use of this source code is governed by a BSD-style license that can be
	// found in the LICENSE file.

	import 'package:process/process.dart';

	import '../artifacts.dart';
	import '../build_info.dart';
	import '../macos/xcode.dart';

	import 'file_system.dart';
	import 'logger.dart';
	import 'process.dart';

	/// A snapshot build configuration.
	class SnapshotType {
	SnapshotType(this.platform, this.mode)
	: assert(mode != null);

	final TargetPlatform? platform;
	final BuildMode mode;

	@override
	String toString() => '$platform $mode';
	}

	/// Interface to the gen_snapshot command-line tool.
	class GenSnapshot {
	GenSnapshot({
	required Artifacts artifacts,
	required ProcessManager processManager,
	required Logger logger,
	}) : _artifacts = artifacts,
	_processUtils = ProcessUtils(logger: logger, processManager: processManager);

	final Artifacts _artifacts;
	final ProcessUtils _processUtils;

	String getSnapshotterPath(SnapshotType snapshotType) {
	return _artifacts.getArtifactPath(
	Artifact.genSnapshot, platform: snapshotType.platform, mode: snapshotType.mode);
	}

	/// Ignored warning messages from gen_snapshot.
	static const Set<String> kIgnoredWarnings = <String>{
	// --strip on elf snapshot.
	'Warning: Generating ELF library without DWARF debugging information.',
	// --strip on ios-assembly snapshot.
	'Warning: Generating assembly code without DWARF debugging information.',
	// A fun two-part message with spaces for obfuscation.
	'Warning: This VM has been configured to obfuscate symbol information which violates the Dart standard.',
	' See dartbug.com/30524 for more information.',
	};

	Future<int> run({
	required SnapshotType snapshotType,
	DarwinArch? darwinArch,
	Iterable<String> additionalArgs = const <String>[],
	}) {
	assert(darwinArch != DarwinArch.armv7);
	assert(snapshotType.platform != TargetPlatform.ios \|\| darwinArch != null);
	final List<String> args = <String>[
	...additionalArgs,
	];

	String snapshotterPath = getSnapshotterPath(snapshotType);

	// iOS and macOS have separate gen_snapshot binaries for each target
	// architecture (iOS: armv7, arm64; macOS: x86_64, arm64). Select the right
	// one for the target architecture in question.
	if (snapshotType.platform == TargetPlatform.ios \|\|
	snapshotType.platform == TargetPlatform.darwin) {
	snapshotterPath += '_${getDartNameForDarwinArch(darwinArch!)}';
	}

	return _processUtils.stream(
	<String>[snapshotterPath, ...args],
	mapFunction: (String line) => kIgnoredWarnings.contains(line) ? null : line,
	);
	}
	}

	class AOTSnapshotter {
	AOTSnapshotter({
	this.reportTimings = false,
	required Logger logger,
	required FileSystem fileSystem,
	required Xcode xcode,
	required ProcessManager processManager,
	required Artifacts artifacts,
	}) : _logger = logger,
	_fileSystem = fileSystem,
	_xcode = xcode,
	_genSnapshot = GenSnapshot(
	artifacts: artifacts,
	processManager: processManager,
	logger: logger,
	);

	final Logger _logger;
	final FileSystem _fileSystem;
	final Xcode _xcode;
	final GenSnapshot _genSnapshot;

	/// If true then AOTSnapshotter would report timings for individual building
	/// steps (Dart front-end parsing and snapshot generation) in a stable
	/// machine readable form. See [AOTSnapshotter._timedStep].
	final bool reportTimings;

	/// Builds an architecture-specific ahead-of-time compiled snapshot of the specified script.
	Future<int> build({
	required TargetPlatform platform,
	required BuildMode buildMode,
	required String mainPath,
	required String outputPath,
	DarwinArch? darwinArch,
	String? sdkRoot,
	List<String> extraGenSnapshotOptions = const <String>[],
	required bool bitcode,
	String? splitDebugInfo,
	required bool dartObfuscation,
	bool quiet = false,
	}) async {
	assert(platform != TargetPlatform.ios \|\| darwinArch != null);
	if (bitcode && platform != TargetPlatform.ios) {
	_logger.printError('Bitcode is only supported for iOS.');
	return 1;
	}

	if (!_isValidAotPlatform(platform, buildMode)) {
	_logger.printError('${getNameForTargetPlatform(platform)} does not support AOT compilation.');
	return 1;
	}

	final Directory outputDir = _fileSystem.directory(outputPath);
	outputDir.createSync(recursive: true);

	final List<String> genSnapshotArgs = <String>[
	'--deterministic',
	];

	final bool targetingApplePlatform =
	platform == TargetPlatform.ios \|\| platform == TargetPlatform.darwin;
	_logger.printTrace('targetingApplePlatform = $targetingApplePlatform');

	final bool extractAppleDebugSymbols =
	buildMode == BuildMode.profile \|\| buildMode == BuildMode.release;
	_logger.printTrace('extractAppleDebugSymbols = $extractAppleDebugSymbols');

	// We strip snapshot by default, but allow to suppress this behavior
	// by supplying --no-strip in extraGenSnapshotOptions.
	bool shouldStrip = true;
	if (extraGenSnapshotOptions != null && extraGenSnapshotOptions.isNotEmpty) {
	_logger.printTrace('Extra gen_snapshot options: $extraGenSnapshotOptions');
	for (final String option in extraGenSnapshotOptions) {
	if (option == '--no-strip') {
	shouldStrip = false;
	continue;
	}
	genSnapshotArgs.add(option);
	}
	}

	final String assembly = _fileSystem.path.join(outputDir.path, 'snapshot_assembly.S');
	if (targetingApplePlatform) {
	genSnapshotArgs.addAll(<String>[
	'--snapshot_kind=app-aot-assembly',
	'--assembly=$assembly',
	]);
	} else {
	final String aotSharedLibrary = _fileSystem.path.join(outputDir.path, 'app.so');
	genSnapshotArgs.addAll(<String>[
	'--snapshot_kind=app-aot-elf',
	'--elf=$aotSharedLibrary',
	]);
	}

	// When buiding for iOS and splitting out debug info, we want to strip
	// manually after the dSYM export, instead of in the `gen_snapshot`.
	final bool stripAfterBuild;
	if (targetingApplePlatform) {
	stripAfterBuild = shouldStrip;
	if (stripAfterBuild) {
	_logger.printTrace('Will strip AOT snapshot manually after build and dSYM generation.');
	}
	} else {
	stripAfterBuild = false;
	if (shouldStrip) {
	genSnapshotArgs.add('--strip');
	_logger.printTrace('Will strip AOT snapshot during build.');
	}
	}

	if (platform == TargetPlatform.android_arm) {
	// Use softfp for Android armv7 devices.
	// TODO(cbracken): eliminate this when we fix https://github.com/flutter/flutter/issues/17489
	genSnapshotArgs.add('--no-sim-use-hardfp');

	// Not supported by the Pixel in 32-bit mode.
	genSnapshotArgs.add('--no-use-integer-division');
	}

	// The name of the debug file must contain additional information about
	// the architecture, since a single build command may produce
	// multiple debug files.
	final String archName = getNameForTargetPlatform(platform, darwinArch: darwinArch);
	final String debugFilename = 'app.$archName.symbols';
	final bool shouldSplitDebugInfo = splitDebugInfo?.isNotEmpty ?? false;
	if (shouldSplitDebugInfo) {
	_fileSystem.directory(splitDebugInfo)
	.createSync(recursive: true);
	}

	// Optimization arguments.
	genSnapshotArgs.addAll(<String>[
	// Faster async/await
	if (shouldSplitDebugInfo) ...<String>[
	'--dwarf-stack-traces',
	'--save-debugging-info=${_fileSystem.path.join(splitDebugInfo!, debugFilename)}',
	],
	if (dartObfuscation)
	'--obfuscate',
	]);

	genSnapshotArgs.add(mainPath);

	final SnapshotType snapshotType = SnapshotType(platform, buildMode);
	final int genSnapshotExitCode = await _genSnapshot.run(
	snapshotType: snapshotType,
	additionalArgs: genSnapshotArgs,
	darwinArch: darwinArch,
	);
	if (genSnapshotExitCode != 0) {
	_logger.printError('Dart snapshot generator failed with exit code $genSnapshotExitCode');
	return genSnapshotExitCode;
	}

	// On iOS and macOS, we use Xcode to compile the snapshot into a dynamic library that the
	// end-developer can link into their app.
	if (targetingApplePlatform) {
	return _buildFramework(
	appleArch: darwinArch!,
	isIOS: platform == TargetPlatform.ios,
	sdkRoot: sdkRoot,
	assemblyPath: assembly,
	outputPath: outputDir.path,
	bitcode: bitcode,
	quiet: quiet,
	stripAfterBuild: stripAfterBuild,
	extractAppleDebugSymbols: extractAppleDebugSymbols
	);
	} else {
	return 0;
	}
	}

	/// Builds an iOS or macOS framework at [outputPath]/App.framework from the assembly
	/// source at [assemblyPath].
	Future<int> _buildFramework({
	required DarwinArch appleArch,
	required bool isIOS,
	String? sdkRoot,
	required String assemblyPath,
	required String outputPath,
	required bool bitcode,
	required bool quiet,
	required bool stripAfterBuild,
	required bool extractAppleDebugSymbols
	}) async {
	final String targetArch = getNameForDarwinArch(appleArch);
	if (!quiet) {
	_logger.printStatus('Building App.framework for $targetArch...');
	}

	final List<String> commonBuildOptions = <String>[
	'-arch',
	targetArch,
	if (isIOS)
	// When the minimum version is updated, remember to update
	// template MinimumOSVersion.
	// https://github.com/flutter/flutter/pull/62902
	'-miphoneos-version-min=11.0',
	if (sdkRoot != null) ...<String>[
	'-isysroot',
	sdkRoot,
	],
	];

	const String embedBitcodeArg = '-fembed-bitcode';
	final String assemblyO = _fileSystem.path.join(outputPath, 'snapshot_assembly.o');

	final RunResult compileResult = await _xcode.cc(<String>[
	...commonBuildOptions,
	if (bitcode) embedBitcodeArg,
	'-c',
	assemblyPath,
	'-o',
	assemblyO,
	]);
	if (compileResult.exitCode != 0) {
	_logger.printError('Failed to compile AOT snapshot. Compiler terminated with exit code ${compileResult.exitCode}');
	return compileResult.exitCode;
	}

	final String frameworkDir = _fileSystem.path.join(outputPath, 'App.framework');
	_fileSystem.directory(frameworkDir).createSync(recursive: true);
	final String appLib = _fileSystem.path.join(frameworkDir, 'App');
	final List<String> linkArgs = <String>[
	...commonBuildOptions,
	'-dynamiclib',
	'-Xlinker', '-rpath', '-Xlinker', '@executable_path/Frameworks',
	'-Xlinker', '-rpath', '-Xlinker', '@loader_path/Frameworks',
	'-install_name', '@rpath/App.framework/App',
	if (bitcode) embedBitcodeArg,
	'-o', appLib,
	assemblyO,
	];

	final RunResult linkResult = await _xcode.clang(linkArgs);
	if (linkResult.exitCode != 0) {
	_logger.printError('Failed to link AOT snapshot. Linker terminated with exit code ${linkResult.exitCode}');
	return linkResult.exitCode;
	}

	if (extractAppleDebugSymbols) {
	final RunResult dsymResult = await _xcode.dsymutil(<String>['-o', '$frameworkDir.dSYM', appLib]);
	if (dsymResult.exitCode != 0) {
	_logger.printError('Failed to generate dSYM - dsymutil terminated with exit code ${dsymResult.exitCode}');
	return dsymResult.exitCode;
	}

	if (stripAfterBuild) {
	// See https://www.unix.com/man-page/osx/1/strip/ for arguments
	final RunResult stripResult = await _xcode.strip(<String>['-x', appLib, '-o', appLib]);
	if (stripResult.exitCode != 0) {
	_logger.printError('Failed to strip debugging symbols from the generated AOT snapshot - strip terminated with exit code ${stripResult.exitCode}');
	return stripResult.exitCode;
	}
	}
	} else {
	assert(stripAfterBuild == false);
	}

	return 0;
	}

	bool _isValidAotPlatform(TargetPlatform platform, BuildMode buildMode) {
	if (buildMode == BuildMode.debug) {
	return false;
	}
	return const <TargetPlatform>[
	TargetPlatform.android_arm,
	TargetPlatform.android_arm64,
	TargetPlatform.android_x64,
	TargetPlatform.ios,
	TargetPlatform.darwin,
	TargetPlatform.linux_x64,
	TargetPlatform.linux_arm64,
	TargetPlatform.windows_x64,
	].contains(platform);
	}
	}