libswiftCore.dylib could not be loaded

[Varuna Jayasiri]

I installed the macos package (swift-tensorflow-DEVELOPMENT-2018-04-26-a-osx.pkg). Command line interpreter works fine. But when I try to use it on swift playground I get the following error:

The active toolchain is not compatible with playgrounds. libswiftCore.dylib could not be loaded.

I think this stackoverflow question (https://stackoverflow.com/questions/50081481/can-not-import-tensorflow-for-swift-in-xcode-playground) is also about the same problem.

My Xcode version is 9.3 and macOS version is 10.13.4

Thank you

Varuna

[Richard Wei]

Hi Varuna,

You may have created an iOS playground instead of macOS. Swift for TensorFlow doesn’t support iOS playgrounds yet.

Go to the inspector to switch the platform to macOS.

-Richard

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[Fabrizio Milo]

I was on the same route and fixed the macOS target. The next error is now:

`Cannot load module 'TensorFlow' as ‘Tensorflow’`

[Richard Wei]

“F” should be upper case. 

-Richard

On Apr 29, 2018, at 3:06 PM, Fabrizio Milo <fm...@entropysource.com> wrote:

I was on the same route and fixed the macOS target. The next error is now:

`Cannot load module 'TensorFlow' as ‘Tensorflow’`

<060EEB35-2E3F-44D8-9027-68B15DDBF195.png>

[Alex]

I'm running into this problem as well, unfortunately changing to macOS doesn't seem to fix the issue.  I made sure to select Swift for TensorFlow Development Snapshot under Toolchains. 

[Arjun Nayini]

Hey Alex -

Can you try:

1. Changing your toolchain

2. Killing the IDE

3. Making a brand new macOS Playground

I was having some weird issues at some point where despite updating the toolchain and switching to a macOS playground, things weren't loading properly until I created a new one.

To unsubscribe from this group and stop receiving emails from it, send an email to swift+unsubscribe@tensorflow.org.

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Arjun Nayini

630.310.9835 | aana...@gmail.com

[Varuna Jayasiri]

Thanks, that was it. Stupid me.

I tried compiling on XCode (as a project) and it gives a a bunch of link errors, when I import TensorFlow. Quick Help and autocomplete suggestions work.

Any idea what I'm missing?

Ld /Users/varuna/Library/Developer/Xcode/DerivedData/SwiftTFFirst-hazixrqgseudecdrsmyqthbahaep/Build/Products/Debug/SwiftTFFirst normal x86_64

    cd /Users/varuna/work/tensorflow/swift/SwiftTFFirst

    export MACOSX_DEPLOYMENT_TARGET=10.13

    /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/clang -arch x86_64 -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.13.sdk -L/Users/varuna/Library/Developer/Xcode/DerivedData/SwiftTFFirst-hazixrqgseudecdrsmyqthbahaep/Build/Products/Debug -F/Users/varuna/Library/Developer/Xcode/DerivedData/SwiftTFFirst-hazixrqgseudecdrsmyqthbahaep/Build/Products/Debug -filelist /Users/varuna/Library/Developer/Xcode/DerivedData/SwiftTFFirst-hazixrqgseudecdrsmyqthbahaep/Build/Intermediates.noindex/SwiftTFFirst.build/Debug/SwiftTFFirst.build/Objects-normal/x86_64/SwiftTFFirst.LinkFileList -mmacosx-version-min=10.13 -Xlinker -object_path_lto -Xlinker /Users/varuna/Library/Developer/Xcode/DerivedData/SwiftTFFirst-hazixrqgseudecdrsmyqthbahaep/Build/Intermediates.noindex/SwiftTFFirst.build/Debug/SwiftTFFirst.build/Objects-normal/x86_64/SwiftTFFirst_lto.o -Xlinker -export_dynamic -Xlinker -no_deduplicate -fobjc-link-runtime -L/Library/Developer/Toolchains/swift-tensorflow-DEVELOPMENT-2018-04-26-a.xctoolchain/usr/lib/swift_static/macosx -Xlinker -force_load_swift_libs -lc++ -framework Foundation -Xlinker -add_ast_path -Xlinker /Users/varuna/Library/Developer/Xcode/DerivedData/SwiftTFFirst-hazixrqgseudecdrsmyqthbahaep/Build/Intermediates.noindex/SwiftTFFirst.build/Debug/SwiftTFFirst.build/Objects-normal/x86_64/SwiftTFFirst.swiftmodule -Xlinker -dependency_info -Xlinker /Users/varuna/Library/Developer/Xcode/DerivedData/SwiftTFFirst-hazixrqgseudecdrsmyqthbahaep/Build/Intermediates.noindex/SwiftTFFirst.build/Debug/SwiftTFFirst.build/Objects-normal/x86_64/SwiftTFFirst_dependency_info.dat -o /Users/varuna/Library/Developer/Xcode/DerivedData/SwiftTFFirst-hazixrqgseudecdrsmyqthbahaep/Build/Products/Debug/SwiftTFFirst

Undefined symbols for architecture x86_64:

  "_TFE_ContextAddFunction", referenced from:

      _$S10TensorFlow8TFEState33_F1EB29DDC3964F4495E8056659BC5464LLC_16programByteCount24entryFunctionNameAddressADSV_SiSPys4Int8VGtcfc in libswiftTensorFlow.a(TensorFlow.o)

  "_TFE_ContextListDevices", referenced from:

      _$S10TensorFlow17_ExecutionContextCACycfc in libswiftTensorFlow.a(TensorFlow.o)

  "_TFE_ContextOptionsSetDevicePlacementPolicy", referenced from:

      _$S10TensorFlow17_ExecutionContextCACycfc in libswiftTensorFlow.a(TensorFlow.o)

  "_TFE_DeleteContext", referenced from:

      _$S10TensorFlow17_ExecutionContextCfd in libswiftTensorFlow.a(TensorFlow.o)

  "_TFE_DeleteContextOptions", referenced from:

      _$S10TensorFlow17_ExecutionContextCACycfc in libswiftTensorFlow.a(TensorFlow.o)

......

"tensorflow::port::InitMain(char const*, int*, char***)", referenced from:

      _InitTensorFlowRuntime in libswiftTensorFlow.a(ctensorflow_init.cpp.o)

ld: symbol(s) not found for architecture x86_64

clang: error: linker command failed with exit code 1 (use -v to see invocation)

On Sun, Apr 29, 2018 at 4:03 PM Richard Wei <rx...@google.com> wrote:

Hi Varuna,

You may have created an iOS playground instead of macOS. Swift for TensorFlow doesn’t support iOS playgrounds yet.

Go to the inspector to switch the platform to macOS.