Rive doesn't compile when embedded in Swift Package using Xcode 26.4 with C++ interoperability enabled

[tbaranes]

Submission checklist

• I have confirmed the issue is present in the latest version of RiveRuntime
• I have searched the documentation and forums and could not find an answer
• I have searched existing issues and this is not a duplicate

Description

Starting with Xcode 26.4, RiveRuntime won't compile anymore in this configuration:

• RiveRuntime (6.15.0 or greater) is embedded in a Swift Package
• The Swift Package is embedded in a xcodeproj target
• The xcodeproj target is using "C++ and Objective-C interoperability" set to "C++ / Objective-C++"

From my tests, if one of these conditions is not respected the compilation will be ok. For example these versions are working:

• Xcode 26.4 + Rive 6.14.0
• Xcode 26.3 + Rive 6.18.1

Upload your reproduction files / stack trace

RiveXcode264.zip

Screenshots / video

Device

All (iPhone, iPad, Mac, etc.)

Apple OS version

Any versions

[dskuza]

Thanks for the report! With Apple's submission requirements changing on April 28th to require building with Xcode 26, we will definitely be bumping the version of Xcode used to compile in the near future. I'm going to do some testing next week to sanity check what versions will work if we build with Xcode 26.4. If things are promising, we'll likely bump earlier than Apple's date.