TypeInitializationException on OSX

Hello,

We recently updated to 2.2.13 (from 2.1.23) and are encountering an issue on OSX.

Tools:

• Visual Studio for Mac
• dotnet sdk v2.1.401

Below is the error output:

Target GetBuildVersion:
    /Users/username/.nuget/packages/nerdbank.gitversioning/2.2.13/build/Nerdbank.GitVersioning.targets(63,5): error MSB4018: The "Nerdbank.GitVersioning.Tasks.GetBuildVersion" task failed unexpectedly.
    /Users/username/.nuget/packages/nerdbank.gitversioning/2.2.13/build/Nerdbank.GitVersioning.targets(63,5): error MSB4018: System.TypeInitializationException: The type initializer for 'LibGit2Sharp.Core.NativeMethods' threw an exception. ---> System.DllNotFoundException: lib/osx/libgit2-6311e88.dylib
    /Users/username/.nuget/packages/nerdbank.gitversioning/2.2.13/build/Nerdbank.GitVersioning.targets(63,5): error MSB4018:   at (wrapper managed-to-native) LibGit2Sharp.Core.NativeMethods.git_libgit2_init()
    /Users/username/.nuget/packages/nerdbank.gitversioning/2.2.13/build/Nerdbank.GitVersioning.targets(63,5): error MSB4018:   at LibGit2Sharp.Core.NativeMethods.LoadNativeLibrary () [0x00000] in <b59d5da32f8541b2a767004d8bddc22b>:0 
    /Users/username/.nuget/packages/nerdbank.gitversioning/2.2.13/build/Nerdbank.GitVersioning.targets(63,5): error MSB4018:   at LibGit2Sharp.Core.NativeMethods..cctor () [0x00045] in <b59d5da32f8541b2a767004d8bddc22b>:0 
    /Users/username/.nuget/packages/nerdbank.gitversioning/2.2.13/build/Nerdbank.GitVersioning.targets(63,5): error MSB4018:    --- End of inner exception stack trace ---
    /Users/username/.nuget/packages/nerdbank.gitversioning/2.2.13/build/Nerdbank.GitVersioning.targets(63,5): error MSB4018:   at LibGit2Sharp.Core.Proxy.git_libgit2_opts_set_search_path (LibGit2Sharp.ConfigurationLevel level, System.String path) [0x00000] in <b59d5da32f8541b2a767004d8bddc22b>:0 
    /Users/username/.nuget/packages/nerdbank.gitversioning/2.2.13/build/Nerdbank.GitVersioning.targets(63,5): error MSB4018:   at LibGit2Sharp.GlobalSettings.SetConfigSearchPaths (LibGit2Sharp.ConfigurationLevel level, System.String[] paths) [0x0001a] in <b59d5da32f8541b2a767004d8bddc22b>:0 
    /Users/username/.nuget/packages/nerdbank.gitversioning/2.2.13/build/Nerdbank.GitVersioning.targets(63,5): error MSB4018:   at Nerdbank.GitVersioning.GitExtensions.OpenGitRepo (System.String pathUnderGitRepo) [0x00012] in <150882c73d494e8384ad79d7674b0ae0>:0 
    /Users/username/.nuget/packages/nerdbank.gitversioning/2.2.13/build/Nerdbank.GitVersioning.targets(63,5): error MSB4018:   at Nerdbank.GitVersioning.VersionOracle.Create (System.String projectDirectory, System.String gitRepoDirectory, Nerdbank.GitVersioning.ICloudBuild cloudBuild, System.Nullable`1[T] overrideBuildNumberOffset, System.String projectPathRelativeToGitRepoRoot) [0x00017] in <150882c73d494e8384ad79d7674b0ae0>:0 
    /Users/username/.nuget/packages/nerdbank.gitversioning/2.2.13/build/Nerdbank.GitVersioning.targets(63,5): error MSB4018:   at Nerdbank.GitVersioning.Tasks.GetBuildVersion.ExecuteInner () [0x000c5] in <a9ad9b18f9d14576b838941f05d31209>:0 
    /Users/username/.nuget/packages/nerdbank.gitversioning/2.2.13/build/Nerdbank.GitVersioning.targets(63,5): error MSB4018:   at MSBuildExtensionTask.ContextAwareTask.Execute () [0x0005e] in <a039684190264706bf075ac0ee99291f>:0 
    /Users/username/.nuget/packages/nerdbank.gitversioning/2.2.13/build/Nerdbank.GitVersioning.targets(63,5): error MSB4018:   at Microsoft.Build.BackEnd.TaskExecutionHost.Microsoft.Build.BackEnd.ITaskExecutionHost.Execute () [0x00023] in /_/src/Build/BackEnd/TaskExecutionHost/TaskExecutionHost.cs:631 
    /Users/username/.nuget/packages/nerdbank.gitversioning/2.2.13/build/Nerdbank.GitVersioning.targets(63,5): error MSB4018:   at Microsoft.Build.BackEnd.TaskBuilder+<ExecuteInstantiatedTask>d__26.MoveNext () [0x00212] in /_/src/Build/BackEnd/Components/RequestBuilder/TaskBuilder.cs:787 
Done building target "GetBuildVersion" in project "MyProject.csproj" -- FAILED.

Let me know if there is any additional information I can provide.

[frankbuckley]

@AArnott - I have made a start at figuring it out.

My first thought was this was the problem - in that it will return lib/win32 on Mono OSX: https://github.com/AArnott/Nerdbank.GitVersioning/blob/d0bbbacfe34e9540572e5747893f2897c892d64a/src/NerdBank.GitVersioning/GitExtensions.cs#L357-L364

However, changing that did not fix the DllNotFoundException.

The only thing I have found so far that ‘fixes’ (works around) the problem it is to put copies of the libraries back under MSBuildFull.

I have confirmed this does not break dotnet build and fixes the DllNotFoundException on Mono msbuild on Mac OS X 10.13.6 (MS Build 15.7.224 on Mono 5.12.0) and Ubuntu 18.04.1 (MS Build 15.6.0.0 on Mono 5.14.0. I have not tested Mono on Windows. Both dotnet build and .NET Framework msbuild on Windows work OK with this change.

I have been playing around with a test project that can be used to test with dotnet and msbuild with local build artifacts. This could be used in CI builds to validate on multiple platforms. However, to build on OSX and Linux, Nerdbank.GitVersioning.LKG needs to be a version that works on those platforms. How do I make one?

[rgmills]

Thanks @frankbuckley and @AArnott . Great surprise to see coming back from vacation!