In mixing swift and oc project，target is static framework and enabled swift library evolution. In Xcode12.0, everything is fine. When you upgrade to Xcode12.5, the project compiler error with: Error Log language Showing All Messages Prepare build note: Using new build system note: Building targets in parallel note: Planning build note: Analyzing workspace note: Using build description from disk note: Build preparation complete Build target TestFramework of project TestFramework with configuration Debug .... /Users/zhangyu81/Library/Developer/Xcode/DerivedData/TestFramework-bnulduitccqmyadwwhoycushfino/Build/Products/Debug-iphoneos/TestFramework.framework/Modules/module.modulemap:9:12: error: header 'TestFramework-Swift.h' not found header "TestFramework-Swift.h" ^ /Users/zhangyu81/Library/Developer/Xcode/DerivedData/TestFramework-bnulduitccqmyadwwhoycushfino/Build/Intermediates.noindex/TestFramework.build/Debug-iphoneos/TestFramework.build/Objects-normal/arm64/TestFramework.swiftinterface:6:19: error: could not build Objective-C module 'TestFramework' @_exported import TestFramework ^ /Users/zhangyu81/Library/Developer/Xcode/DerivedData/TestFramework-bnulduitccqmyadwwhoycushfino/Build/Intermediates.noindex/TestFramework.build/Debug-iphoneos/TestFramework.build/Objects-normal/arm64/TestFramework.swiftinterface:1:1: error: failed to verify module interface of 'TestFramework'; it may have been damaged or it may have triggered a bug in the Swift compiler when it was produced // swift-interface-format-version: 1.0 ^ Command VerifyModuleInterface failed with a nonzero exit code Build failed 2021/5/24, 5:07 PM 4.1 seconds Build Setp: Compile Swift source files: Verify swiftinterface (arm64): - Command VerifyModuleInterface failed with a nonzero exit code Reason? Enable BUILD_LIBRARY_FOR_DISTRIBUTION will trigger swiftinterface verification after all Swift compilation is completed, and the verification will use ModuleMap, but the "SWIFT. H" file referenced in ModuleMap has not been copied into the binary of Target, so the trigger error: "header 'TestFramework-Swift.h' not found" Is it a Swift compiler bug? Thanks any reply

It’s invalid by setting Other Linker Flags to compile library dependencies with simulator on Xcode12 beta4 and after IDE,but it's ok on devices. By the way, this problem always exist untils Xcode12Beta6. By Xcode10.2 Release Note Information with https://developer.apple.com/documentation/xcode-release-notes/xcode-10_2-release-notes New Features Implicit Dependencies now supports finding dependencies in Other Linker Flags for linked frameworks and libraries specified with -framework, -weak_framework, -reexport_framework, -lazy_framework, -weak-l, -reexport-l, -lazy-l, and -l. (7879587)