Archive Failing on Xcode 11.4 / 11.5

[mRs-]

Describe the bug

When using Xcode 11.4 or 11.5 and archiving the grpc-swift implementation in a Framework or a static lib xcode is crashing with an Libtool failed command without an exit code. All grpc-swift version are 1.0.0-alpha.1 to 1.0.0-alpha.12.

/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/libtool: object: /Users/mariuslandwehr/Library/Developer/Xcode/DerivedData/Networking-cskqpnmvfnmzorctpckvxmsmisys/Build/Intermediates.noindex/ArchiveIntermediates/Networking/BuildProductsPath/Release/CGRPCZlib.o malformed object (string table at offset 0 with a size of 8, overlaps Mach-O headers at offset 0 with a size of 160)
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/libtool: object: /Users/mariuslandwehr/Library/Developer/Xcode/DerivedData/Networking-cskqpnmvfnmzorctpckvxmsmisys/Build/Intermediates.noindex/ArchiveIntermediates/Networking/BuildProductsPath/Release/CNIOLinux.o malformed object (string table at offset 0 with a size of 8, overlaps Mach-O headers at offset 0 with a size of 160)
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/libtool: object: /Users/mariuslandwehr/Library/Developer/Xcode/DerivedData/Networking-cskqpnmvfnmzorctpckvxmsmisys/Build/Intermediates.noindex/ArchiveIntermediates/Networking/BuildProductsPath/Release/CGRPCZlib.o malformed object (string table at offset 0 with a size of 8, overlaps Mach-O headers at offset 0 with a size of 160)
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/libtool: object: /Users/mariuslandwehr/Library/Developer/Xcode/DerivedData/Networking-cskqpnmvfnmzorctpckvxmsmisys/Build/Intermediates.noindex/ArchiveIntermediates/Networking/BuildProductsPath/Release/CNIOLinux.o malformed object (string table at offset 0 with a size of 8, overlaps Mach-O headers at offset 0 with a size of 160)
Command Libtool failed with a nonzero exit code

To reproduce

To Reproduce clone or zip https://github.com/mRs-/Xcode-11.4-Libtool-Regression

Steps to reproduce the bug you've found:

1. Clone or download the repo
2. Open the Xcode Project
3. Archive the Project
4. LibTool is failing

Expected behaviour

Libtool is not failing and the network framework is building

Additional information

Currently the only working solution is to build my macOS application under Xcode 11.3...

[weissi]

Thank you for reporting & the great example project. This is a compiler bug. I filed a bugs.swift.org for you: https://bugs.swift.org/browse/SR-12939

[mRs-]

Thanks!

[weissi]

Thanks to @abertedrud, I found a very simple workaround that fixes this:

• workaround SR-12939 #826
• workaround SR-12939 apple/swift-nio#1546

[weissi]

@mRs- A few minutes ago, @glbrntt released NIO 2.18.0 & gRPC Swift 1.0.0-alpha.13 which should work around this issue.

Would you mind confirming that after a File > Swift Packages > Update to Latest Package Versions everything works correctly?

[mRs-]

Yep it's working when I update the Dependencies to the latest version. Did this also for the others Dependencies. Should be okay to update this.

[mRs-]

Thanks for your help @weissi and @glbrntt !

[weissi]

Thanks for verifying this so quickly! @glbrntt I think we can close this then?