Flutter build IOS error IconTreeShakerException: Font subsetting failed with exit code -9

Question

Before that I still build IOS normally with the command: flutter build ipa. Until I upgraded to Flutter 3.3.10. It suddenly throws an exception and I can't build IOS.

Failed to build iOS app
Error (Xcode): Target release_ios_bundle_flutter_assets failed: 
IconTreeShakerException: Font subsetting failed with exit code -9.


Encountered error while archiving for device.

Groceryman

Answer 1

Yes as @Janis awnser as hot fix. Or use my way, go to System Preferences -> Security & Privacy -> Allow Font-sub

Groceryman

Answer 2

I just encountered the same issue. Maybe it is related to some IconData not being declared as const, but I didn't find anything like that in my project, so for now I append --no-tree-shake-icons to my release build command, maybe that works for you too.

Landloper