Search Unity

  1. Unity Asset Manager is now available in public beta. Try it out now and join the conversation here in the forums.
    Dismiss Notice

Mac b16: DllNotFoundException: libMonoPosixHelper.dylib

Discussion in '5.4 Beta' started by andywatts, May 3, 2016.

  1. andywatts

    andywatts

    Joined:
    Sep 19, 2015
    Posts:
    112
    Upgraded to b16 on Mac and getting a DLL not found exception on libMonoPosixHelper.

    Code (csharp):
    1.  
    2. DllNotFoundException: libMonoPosixHelper.dylib
    3. System.IO.Compression.DeflateStream..ctor (System.IO.Stream compressedStream, CompressionMode mode, Boolean leaveOpen, Boolean gzip)
    4. (wrapper remoting-invoke-with-check) System.IO.Compression.DeflateStream:.ctor (System.IO.Stream,System.IO.Compression.CompressionMode,bool,bool)
    5. System.IO.Compression.GZipStream..ctor (System.IO.Stream compressedStream, CompressionMode mode, Boolean leaveOpen)
    6. System.IO.Compression.GZipStream..ctor (System.IO.Stream compressedStream, CompressionMode mode)
    7. (wrapper remoting-invoke-with-check) System.IO.Compression.GZipStream:.ctor (System.IO.Stream,System.IO.Compression.CompressionMode)
    8. Chunk.ParseData (System.Byte[] zippedData) (at Assets/Scripts/models/Chunk.cs:201)
    9.  
    Error traces to the GZipStream in the below snippet...

    Code (csharp):
    1.  
    2.        using (var msi = new MemoryStream(zippedData)) {
    3.             using (var mso = new MemoryStream()) {
    4.                 using (var gs = new GZipStream(msi, CompressionMode.Decompress)) {
    5.  

    Appreciate any advice...


    Confirmed it's present on the file system.

    Code (csharp):
    1.  
    2. /Applications/Unity/Unity.app/Contents$ find .  | grep -i posixhelper
    3.  
    4. ./Frameworks/MonoEmbedRuntime/osx/libMonoPosixHelper.dylib
    5. ./il2cpp/libil2cpp/externals/MonoPosixHelper.cpp
    6. ./il2cpp/libil2cpp/externals/MonoPosixHelper.h
    7. ./il2cpp/libil2cpp/os/Posix/PosixHelpers.cpp
    8. ./il2cpp/libil2cpp/os/Posix/PosixHelpers.h
    9. ./Mono/lib/libMonoPosixHelper.dylib
    10. ./MonoBleedingEdge/lib/libMonoPosixHelper.dylib
    11. ./PlaybackEngines/MacStandaloneSupport/Variations/macosx32_development_mono/UnityPlayer.app/Contents/Frameworks/MonoEmbedRuntime/osx/libMonoPosixHelper.dylib
    12. ./PlaybackEngines/MacStandaloneSupport/Variations/macosx32_nondevelopment_mono/UnityPlayer.app/Contents/Frameworks/MonoEmbedRuntime/osx/libMonoPosixHelper.dylib
    13. ./PlaybackEngines/MacStandaloneSupport/Variations/macosx64_development_mono/UnityPlayer.app/Contents/Frameworks/MonoEmbedRuntime/osx/libMonoPosixHelper.dylib
    14. ./PlaybackEngines/MacStandaloneSupport/Variations/macosx64_nondevelopment_mono/UnityPlayer.app/Contents/Frameworks/MonoEmbedRuntime/osx/libMonoPosixHelper.dylib
    15. ./PlaybackEngines/MacStandaloneSupport/Variations/universal_development_mono/UnityPlayer.app/Contents/Frameworks/MonoEmbedRuntime/osx/libMonoPosixHelper.dylib
    16. ./PlaybackEngines/MacStandaloneSupport/Variations/universal_nondevelopment_mono/UnityPlayer.app/Contents/Frameworks/MonoEmbedRuntime/osx/libMonoPosixHelper.dylib
    17.  
     
    andywatts, May 3, 2016
    #1

  2. Alex-Lian

    Alex-Lian

    Guest

    Could we get a bug report # please?
     
    Alex-Lian, May 3, 2016
    #2

  3. Voronoi

    Voronoi

    Joined:
    Jul 2, 2012
    Posts:
    587
    Is this a bug in 5.4beta? I ran into this trying to read from the serial port on a mac.

    Filed a bug report: 810964
     
    Last edited: Jul 4, 2016
    Voronoi, Jul 3, 2016
    #3

  4. JoshPeterson

    JoshPeterson

    Unity Technologies

    Joined:
    Jul 21, 2014
    Posts:
    6,931
    Actually, I don't think that this issue is related to that one on Unity answers. The libMonoPosixHelper.dylib file is shipped with the Unity installation as part of Mono. It is not a separate dylib as discussed in that answer.

    This looks a lot like a known bug that found internally and corrected in Unity 5.5 (which is currently in closed alpha). to work around the issue until then, you could try using a third-party library for compression.

    I wonder though, you mentioned that upgrading to b16 caused this issue. Did the same GZipStream code work in an earlier version of Unity? I thought that this was a long-standing problem, but I may be misunderstanding it.
     
    JoshPeterson, Jul 13, 2016
    #4