Embedding frameworks with fat binaries will prevent Swift libraries to be embedded.

Originator:lucv926
Number:rdar://27459058 Date Originated:20-Jul-2016 06:32 PM
Status:Duplicate Resolved:NO
Product:Developer Tools Product Version:Xcode 8 B3 8S174q
Classification:Serious Bug Reproducible:Always
 
Summary:
Since Xcode 8 Beta 3, embedding some frameworks will cause Xcode from not embedding Swift libraries.

Steps to Reproduce:
- Open the attached project
- Embed any of the frameworks under the "Embed to show bug" group
- Clean and compile
- Open Finder to the location of the .app
- Right-click to show content and go to Frameworks


Expected Results:
Swift libraries should be included.

Actual Results:
Swift libraries are missing and Xcode outputs this:

CopySwiftLibs /Users/lucvandal/Library/Developer/Xcode/DerivedData/dylibs-byridmbqtcupvddpkmyklvsjqmvw/Build/Products/Debug-iphonesimulator/dylibs.app
    cd "/Users/lucvandal/Downloads/dylib issue/dylibs"
    export CODESIGN_ALLOCATE=/Applications/Xcode-beta.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/codesign_allocate
    export DEVELOPER_DIR=/Applications/Xcode-beta.app/Contents/Developer
    export PATH="/Applications/Xcode-beta.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/usr/bin:/Applications/Xcode-beta.app/Contents/Developer/usr/bin:/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin"
    export SDKROOT=/Applications/Xcode-beta.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator10.0.sdk
    export TOOLCHAINS=com.apple.dt.toolchain.XcodeDefault
    builtin-swiftStdLibTool --copy --verbose --sign - --scan-executable /Users/lucvandal/Library/Developer/Xcode/DerivedData/dylibs-byridmbqtcupvddpkmyklvsjqmvw/Build/Products/Debug-iphonesimulator/dylibs.app/dylibs --scan-folder /Users/lucvandal/Library/Developer/Xcode/DerivedData/dylibs-byridmbqtcupvddpkmyklvsjqmvw/Build/Products/Debug-iphonesimulator/dylibs.app/Frameworks --scan-folder /Users/lucvandal/Library/Developer/Xcode/DerivedData/dylibs-byridmbqtcupvddpkmyklvsjqmvw/Build/Products/Debug-iphonesimulator/dylibs.app/PlugIns --scan-folder /Users/lucvandal/Downloads/dylib\ issue/Vendor/Carthage/Build/iOS/OnePasswordExtension.framework --scan-folder /Users/lucvandal/Downloads/dylib\ issue/Vendor/Carthage/Build/iOS/SSKeychain.framework --scan-folder /Users/lucvandal/Downloads/dylib\ issue/Vendor/Carthage/Build/iOS/Branch.framework --scan-folder /Users/lucvandal/Downloads/dylib\ issue/Vendor/Carthage/Build/iOS/Reachability.framework --platform iphonesimulator --toolchain /Applications/Xcode-beta.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain --toolchain /Applications/Xcode-beta.app/Contents/Developer/Toolchains/Swift_2.3.xctoolchain --toolchain /Applications/Xcode-beta.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain --destination /Users/lucvandal/Library/Developer/Xcode/DerivedData/dylibs-byridmbqtcupvddpkmyklvsjqmvw/Build/Products/Debug-iphonesimulator/dylibs.app/Frameworks --strip-bitcode --resource-destination /Users/lucvandal/Library/Developer/Xcode/DerivedData/dylibs-byridmbqtcupvddpkmyklvsjqmvw/Build/Products/Debug-iphonesimulator/dylibs.app --resource-library libswiftRemoteMirror.dylib

Effective srcDirs: {(
    <DVTFilePath:0x6080002a7740:'/Applications/Xcode-beta.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/swift/iphonesimulator'>,
    <DVTFilePath:0x6000006a3f60:'/Applications/Xcode-beta.app/Contents/Developer/Toolchains/Swift_2.3.xctoolchain/usr/lib/swift/iphonesimulator'>
)}
Effective Swift version: { arm64: 4; armv7: 4; i386: 4; x86_64: 4 }
Found library with mismatched Swift ABI: /Applications/Xcode-beta.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/swift/iphonesimulator/libswiftCore.dylib { i386: 4; x86_64: 4 }
Found library with mismatched Swift ABI: /Applications/Xcode-beta.app/Contents/Developer/Toolchains/Swift_2.3.xctoolchain/usr/lib/swift/iphonesimulator/libswiftCore.dylib { i386: 3; x86_64: 3 }
Found library with mismatched Swift ABI: /Applications/Xcode-beta.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/swift/iphonesimulator/libswiftCoreGraphics.dylib { i386: 4; x86_64: 4 }
Found library with mismatched Swift ABI: /Applications/Xcode-beta.app/Contents/Developer/Toolchains/Swift_2.3.xctoolchain/usr/lib/swift/iphonesimulator/libswiftCoreGraphics.dylib { i386: 3; x86_64: 3 }
Found library with mismatched Swift ABI: /Applications/Xcode-beta.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/swift/iphonesimulator/libswiftCoreImage.dylib { i386: 4; x86_64: 4 }
Found library with mismatched Swift ABI: /Applications/Xcode-beta.app/Contents/Developer/Toolchains/Swift_2.3.xctoolchain/usr/lib/swift/iphonesimulator/libswiftCoreImage.dylib { i386: 3; x86_64: 3 }
Found library with mismatched Swift ABI: /Applications/Xcode-beta.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/swift/iphonesimulator/libswiftDarwin.dylib { i386: 4; x86_64: 4 }
Found library with mismatched Swift ABI: /Applications/Xcode-beta.app/Contents/Developer/Toolchains/Swift_2.3.xctoolchain/usr/lib/swift/iphonesimulator/libswiftDarwin.dylib { i386: 3; x86_64: 3 }
Found library with mismatched Swift ABI: /Applications/Xcode-beta.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/swift/iphonesimulator/libswiftDispatch.dylib { i386: 4; x86_64: 4 }
Found library with mismatched Swift ABI: /Applications/Xcode-beta.app/Contents/Developer/Toolchains/Swift_2.3.xctoolchain/usr/lib/swift/iphonesimulator/libswiftDispatch.dylib { i386: 3; x86_64: 3 }
Found library with mismatched Swift ABI: /Applications/Xcode-beta.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/swift/iphonesimulator/libswiftFoundation.dylib { i386: 4; x86_64: 4 }
Found library with mismatched Swift ABI: /Applications/Xcode-beta.app/Contents/Developer/Toolchains/Swift_2.3.xctoolchain/usr/lib/swift/iphonesimulator/libswiftFoundation.dylib { i386: 3; x86_64: 3 }
Found library with mismatched Swift ABI: /Applications/Xcode-beta.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/swift/iphonesimulator/libswiftObjectiveC.dylib { i386: 4; x86_64: 4 }
Found library with mismatched Swift ABI: /Applications/Xcode-beta.app/Contents/Developer/Toolchains/Swift_2.3.xctoolchain/usr/lib/swift/iphonesimulator/libswiftObjectiveC.dylib { i386: 3; x86_64: 3 }
Found library with mismatched Swift ABI: /Applications/Xcode-beta.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/lib/swift/iphonesimulator/libswiftUIKit.dylib { i386: 4; x86_64: 4 }
Found library with mismatched Swift ABI: /Applications/Xcode-beta.app/Contents/Developer/Toolchains/Swift_2.3.xctoolchain/usr/lib/swift/iphonesimulator/libswiftUIKit.dylib { i386: 3; x86_64: 3 }

Version:
Xcode 8 beta 3 8S174q

Notes:
I've included the frameworks source code so you can see what project settings are causing this issue.

If this the expected behaviour, it wasn't specified in the latest Xcode 8 B3 release notes.

Also, see: 

https://forums.developer.apple.com/message/155480#155480
https://forums.developer.apple.com/thread/52139

Configuration:
N/A

This never was an issue with Xcode 7 or previous Xcode 8 betas.

Comments

Temporary Solution

I have solved this issue for iOS Apps currently using the script detailed here: https://gist.github.com/madhavajay/39ff8bfee92e7cd97ea4270b8c99b3bc

Theres a discussion here about it: https://github.com/Carthage/Carthage/issues/1394

It seems the builtin-swiftStdLibTool is broken, or being stricter in a way which doesnt matter to the current iOS 10 or watchOS 3. I assume all this applies to tvOS as well but no one has posted about it yet.

I still can't figure out why my watchOS app wont load (it times out), but a brand new test watch app seems okay, so still debugging that part. But if I look at both the App and the Extension build steps they have the same: "Mismatched Swift ABI" error.

I have tried adding the same script to both the App and Extension build phases but its still timing out, so theres another problem....

By me at July 21, 2016, 10:55 a.m. (reply...)

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