[flutter_tools] Add support for Linux host ARM

[kenthinson]

Flutter tool fails to build on Ubuntu Server ARM64 for Raspberry Pi. Just to be clear I am trying to run the SDK on the PI then install the app to a Android device.

Steps to Reproduce

Brand new flash of Ubuntu 64bit for Raspberry Pi aka "ubuntu-20.04-preinstalled-server-arm64+raspi"

Following install instructions at: https://flutter.dev/docs/get-started/install/linux
git clone https://github.com/flutter/flutter.git -b stable
export PATH="$PATH:pwd/flutter/bin"
flutter

Logs

Building flutter tool...
/home/ubuntu/development/flutter/bin/cache/dart-sdk/bin/pub: line 49: /home/ubuntu/development/flutter/bin/cache/dart-sdk/bin/dart: cannot execute binary file: Exec format error
/home/ubuntu/development/flutter/bin/cache/dart-sdk/bin/pub: line 49: /home/ubuntu/development/flutter/bin/cache/dart-sdk/bin/dart: Success
Error: Unable to 'pub upgrade' flutter tool. Retrying in five seconds... (9 tries left)
/home/ubuntu/development/flutter/bin/cache/dart-sdk/bin/pub: line 49: /home/ubuntu/development/flutter/bin/cache/dart-sdk/bin/dart: cannot execute binary file: Exec format error
/home/ubuntu/development/flutter/bin/cache/dart-sdk/bin/pub: line 49: /home/ubuntu/development/flutter/bin/cache/dart-sdk/bin/dart: Success
Error: Unable to 'pub upgrade' flutter tool. Retrying in five seconds... (8 tries left)
/home/ubuntu/development/flutter/bin/cache/dart-sdk/bin/pub: line 49: /home/ubuntu/development/flutter/bin/cache/dart-sdk/bin/dart: cannot execute binary file: Exec format error
/home/ubuntu/development/flutter/bin/cache/dart-sdk/bin/pub: line 49: /home/ubuntu/development/flutter/bin/cache/dart-sdk/bin/dart: Success
Error: Unable to 'pub upgrade' flutter tool. Retrying in five seconds... (7 tries left)
/home/ubuntu/development/flutter/bin/cache/dart-sdk/bin/pub: line 49: /home/ubuntu/development/flutter/bin/cache/dart-sdk/bin/dart: cannot execute binary file: Exec format error
/home/ubuntu/development/flutter/bin/cache/dart-sdk/bin/pub: line 49: /home/ubuntu/development/flutter/bin/cache/dart-sdk/bin/dart: Success
Error: Unable to 'pub upgrade' flutter tool. Retrying in five seconds... (6 tries left)
^C

ubuntu@ubuntu:~/development$ flutter doctor -v
Building flutter tool...
/home/ubuntu/development/flutter/bin/cache/dart-sdk/bin/pub: line 49: /home/ubuntu/development/flutter/bin/cache/dart-sdk/bin/dart: cannot execute binary file: Exec format error
/home/ubuntu/development/flutter/bin/cache/dart-sdk/bin/pub: line 49: /home/ubuntu/development/flutter/bin/cache/dart-sdk/bin/dart: Success
Error: Unable to 'pub upgrade' flutter tool. Retrying in five seconds... (9 tries left)
/home/ubuntu/development/flutter/bin/cache/dart-sdk/bin/pub: line 49: /home/ubuntu/development/flutter/bin/cache/dart-sdk/bin/dart: cannot execute binary file: Exec format error
/home/ubuntu/development/flutter/bin/cache/dart-sdk/bin/pub: line 49: /home/ubuntu/development/flutter/bin/cache/dart-sdk/bin/dart: Success
Error: Unable to 'pub upgrade' flutter tool. Retrying in five seconds... (8 tries left)

[christopherfujino]

@kenthinson Hi, thanks for opening this. Unfortunately we don't support running the tool on arm architectures. I'm thinking the action point for this issue should be to make this explicit on the website system requirements https://flutter.dev/docs/get-started/install/linux

[kenthinson]

@christopherfujino Thanks for the information. Please feel free to close this after the docs are updated. I’ll leave it open as a reminder until then :)

[christopherfujino]

@christopherfujino Thanks for the information. Please feel free to close this after the docs are updated. I’ll leave it open as a reminder until then :)

SGTM!

[christopherfujino]

@kenthinson are you still interested in using the flutter sdk on a raspberry pi? I'm going to be investigating the viability of this and would love to have another tester :)