Use case

Support running Flutter apps in profile or release mode on a custom device.

The Flutter profile build mode is very useful for troubleshooting performance issues, but trying to run a Flutter app in profile or release mode on a custom device currently fails with:

$ flutter run -d my-device --profile
Profile mode is not supported by <My device>.

Proposal

Add support for running Flutter apps in profile and release modes on custom devices by:

1. Removing the hard-coded debug mode check from CustomDevice::supportsRuntimeMode
   

   flutter/packages/flutter_tools/lib/src/custom_devices/custom_device.dart

   Lines 681 to 684 in d8100ac

   	@override
   	FutureOr<bool> supportsRuntimeMode(BuildMode buildMode) {
   	return buildMode == BuildMode.debug;
   	}

2. Adding a new ${buildMode} string interpolation variable to the runDebug command (or possibly rename the command to run instead?):
   

   flutter/packages/flutter_tools/lib/src/custom_devices/custom_device.dart

   Lines 351 to 356 in d8100ac

   	final List<String> interpolated =
   	interpolateCommand(_device._config.runDebugCommand, <String, String>{
   	'remotePath': '/tmp/',
   	'appName': packageName,
   	'engineOptions': _getEngineOptionsForCmdline(debuggingOptions, traceStartup, route),
   	});