Had the same problem Xcode 26.0.1, Unity 6000.2.6f2. Searched the forums and tried couple of methods, finally the following worked. Min version to 16.0 Other Linker Flags in target Build, removed -ld64. Other Linker Flags in UnityFramework Build, removed -ld64. Kept the rest of the flags. Clean build, cleaned Derived Data. Compiled and it worked. Hope it will be the same for you.
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Developer Tools & Services
SubTopic:
Xcode