Burst related error when building for Mac Standalone in Mac machine

Unity Engine
1

I get the following errors when I build a Mac standalone in a Mac machine:

System.DllNotFoundException: Unable to load the unmanaged library /Users/admin/academia/UnitySource/Library/PackageCache/com.unity.burst@1.1.3-preview.3/.Runtime/libburst-llvm-8.dylib Reason: dlopen(/Users/admin/academia/UnitySource/Library/PackageCache/com.unity.burst@1.1.3-preview.3/.Runtime/libburst-llvm-8.dylib, 2): Symbol not found: _futimens

Referenced from: /Users/admin/academia/UnitySource/Library/PackageCache/com.unity.burst@1.1.3-preview.3/.Runtime/libburst-llvm-8.dylib

Expected in: /usr/lib/libSystem.B.dylib

in /Users/admin/academia/UnitySource/Library/PackageCache/com.unity.burst@1.1.3-preview.3/.Runtime/libburst-llvm-8.dylib
at Burst.Backend.UnmanagedLibrary+MacOSUnmanagedLibrary.LoadLibrary (System.String name) [0x00060] in :0
at Burst.Backend.UnmanagedLibrary.LoadLibrary (System.String name) [0x00020] in :0
at Burst.Backend.StandardCompilerBackend…ctor (System.String nativeSharedLibraryName) [0x0000d] in :0
at Burst.Bcl.BclApp…ctor (Burst.Bcl.BclOptions options) [0x00022] in :0
at Burst.Bcl.Program.Main (System.String[ ] args) [0x00189] in :0

BuildFailedException: Burst compiler (1.1.3-preview.3) failed running

stdout:
An unexpected exception occurred:
stderr:
System.DllNotFoundException: Unable to load the unmanaged library /Users/admin/academia/UnitySource/Library/PackageCache/com.unity.burst@1.1.3-preview.3/.Runtime/libburst-llvm-8.dylib Reason: dlopen(/Users/admin/academia/UnitySource/Library/PackageCache/com.unity.burst@1.1.3-preview.3/.Runtime/libburst-llvm-8.dylib, 2): Symbol not found: _futimens
Referenced from: /Users/admin/academia/UnitySource/Library/PackageCache/com.unity.burst@1.1.3-preview.3/.Runtime/libburst-llvm-8.dylib
Expected in: /usr/lib/libSystem.B.dylib
in /Users/admin/academia/UnitySource/Library/PackageCache/com.unity.burst@1.1.3-preview.3/.Runtime/libburst-llvm-8.dylib
at Burst.Backend.UnmanagedLibrary+MacOSUnmanagedLibrary.LoadLibrary (System.String name) [0x00060] in :0
at Burst.Backend.UnmanagedLibrary.LoadLibrary (System.String name) [0x00020] in :0
at Burst.Backend.StandardCompilerBackend…ctor (System.String nativeSharedLibraryName) [0x0000d] in :0
at Burst.Bcl.BclApp…ctor (Burst.Bcl.BclOptions options) [0x00022] in :0
at Burst.Bcl.Program.Main (System.String[ ] args) [0x00189] in :0

Unity.Burst.Editor.BurstAotCompiler+BclRunner.RunProgram (UnityEditor.Utils.Program p, System.String exe, System.String args, System.String workingDirectory, UnityEditor.Scripting.Compilers.CompilerOutputParserBase parser, UnityEditor.Build.Reporting.BuildReport report) (at Library/PackageCache/com.unity.burst@1.1.3-preview.3/Editor/BurstAotCompiler.cs:725)
Unity.Burst.Editor.BurstAotCompiler+BclRunner.RunManagedProgram (System.String exe, System.String args, System.String workingDirectory, UnityEditor.Scripting.Compilers.CompilerOutputParserBase parser, UnityEditor.Build.Reporting.BuildReport report) (at Library/PackageCache/com.unity.burst@1.1.3-preview.3/Editor/BurstAotCompiler.cs:663)
Unity.Burst.Editor.BurstAotCompiler+BclRunner.RunManagedProgram (System.String exe, System.String args, UnityEditor.Scripting.Compilers.CompilerOutputParserBase parser, UnityEditor.Build.Reporting.BuildReport report) (at Library/PackageCache/com.unity.burst@1.1.3-preview.3/Editor/BurstAotCompiler.cs:637)

We are using the following versions:

  • Unity 2019.2.3
  • Unity.Entities 0.1.1
  • Burst 1.1.3 preview.3

Building for Windows works fine.

2

Hello,
thank you for reporting this issue. We are looking into it and i’ll let you know as soon as possible.
Sorry for the inconvenience.

3

Also tried downgrading to Unity 2019.2.2. Still the same errors.

4

Hello,
i wanted to let you know that we were able to find the root cause for this issue and the next burst package will contain the fix.
I will let you know when it is available.
Thanks

1 Like
5

Thank you very much!

6

Hello,
we just published a new version of burst 1.2.0-preview.1. Can you please try this one out and let us know if it fixes the issue above?
Thank you

1 Like
7

Ok, thanks!

Edit: Verified that it works. Thank you very much!