Flutter: where is xcode_backend.sh?

Question

In the doc https://github.com/flutter/flutter/wiki/Obfuscating-Dart-Code, it says Add the following flag to the build aot call in the <ProjectRoot>/packages/flutter_tools/bin/xcode_backend.sh file.

But I don't have the directory <ProjectRoot>/packages/ at all. Do I have to create it somehow? Thanks a lot.

Answer 1

I had same issue and I was able to fix this by adding Flutter SDK path in User-Defined Settings. Open Project Target and add User-Defined Setting with key name FLUTTER_ROOT with the value of your flutter SDK location. Image below for further reference.

Answer 2

I guess there's a mistake on the official documentation.

UPDATE: the wiki page has now been corrected

It's not

<ProjectRoot>/packages/flutter_tools/bin/xcode_backend.sh

but should be (and it's)

<FlutterRoot>/packages/flutter_tools/bin/xcode_backend.sh

If you don't remember where you have installed flutter sdk try this command:

which flutter

it will show

<FlutterRoot>/bin/flutter

Then you will see your file in <FlutterRoot>

cd <FlutterRoot>
find . -name "xcode_backend.sh"
./packages/flutter_tools/bin/xcode_backend.sh

At least the official docs points out that this feature is

And point to this useful SO answer.