C:\>

flutter run

d windows

flutter run

d macos

flutter run

d linux

Note:
  If you do not supply the -d flag, flutter run lists
  the available targets to choose from.

Build a release app

To generate a release build,
run one of the following commands:

PS C:\>

flutter build windows

flutter build macos

flutter build linux

Add desktop support to an existing Flutter app

To add desktop support to an existing Flutter project,
run the following command in a terminal from the
root project directory:

flutter create

-platforms

=windows,macos,linux