Unable to load shared library 'git2-7ce88e6' or one of its dependencies.

[Standret]

Hi there,

So I've encountered with a quite strange problem when I tried to run my program on ubuntu. As you can see in the log below the app crashes each time when trying to invoke any method from libgit, and it is quite strange cause this project works on Windows10 perfectly.

The type initializer for 'LibGit2Sharp.Core.NativeMethods' threw an exception.
   at LibGit2Sharp.Core.NativeMethods.git_clone(git_repository*& repo, String origin_url, FilePath workdir_path, GitCloneOptions& opts)
   at LibGit2Sharp.Core.Proxy.git_clone(String url, String workdir, GitCloneOptions& opts) in C:\projects\libgit2sharp\LibGit2Sharp\Core\Proxy.cs:line 275
   at LibGit2Sharp.Repository.Clone(String sourceUrl, String workdirPath, CloneOptions options) in C:\projects\libgit2sharp\LibGit2Sharp\Repository.cs:line 779
   at Stt.GitSync.Infrastructure.Managers.RepositoriesManager.CloneIfNotExists(ConfigurationData data) in /home/grimm/Documents/SE/C#/SttGitSync/Stt.GitSync/Infrastructure/Managers/RepositoriesManager.cs:line 96

Unable to load shared library 'git2-7ce88e6' or one of its dependencies. In order to help diagnose loading problems, consider setting the LD_DEBUG environment variable: libgit2-7ce88e6: cannot open shared object file: No such file or directory
   at LibGit2Sharp.Core.NativeMethods.git_libgit2_init()
   at LibGit2Sharp.Core.NativeMethods.InitializeNativeLibrary() in C:\projects\libgit2sharp\LibGit2Sharp\Core\NativeMethods.cs:line 78
   at LibGit2Sharp.Core.NativeMethods..cctor() in C:\projects\libgit2sharp\LibGit2Sharp\Core\NativeMethods.cs:line 56

Reproduction steps

Try to use any LibGit2 method and you get this error

Expected behavior

Repository is cloned

Actual behavior

Exception is raised

Version of LibGit2Sharp (release number or SHA1)

<PackageReference Include="LibGit2Sharp" Version="0.26.1" />
<PackageReference Include="LibGit2Sharp.NativeBinaries" Version="2.0.289" />

Operating system(s) tested; .NET runtime tested

ubuntu 19.04
netcoreapp2.2

[montague247]

Hi,

the same issue on my Mac.
10.14.5 (18F132) (Mojave)

On windows everything works fine.

Rolling back to 0.26.0 works.

Best regards

[Standret]

Hmm, I've tried to create the empty project which just clones the public repository. and this error occurs again and again, and the version of libgit does not matter. I've also attached my .csproj, probably I've done something wrong.

<Project Sdk="Microsoft.NET.Sdk">

  <PropertyGroup>
    <OutputType>Exe</OutputType>
    <TargetFramework>netcoreapp2.2</TargetFramework>
  </PropertyGroup>

  <ItemGroup>
    <PackageReference Include="LibGit2Sharp" Version="0.26.0" />
    <PackageReference Include="Newtonsoft.Json" Version="12.0.1" />
    <PackageReference Include="System.Reactive" Version="4.1.3" />
  </ItemGroup>

</Project>

[toanxyz]

I have the same issue too when running in Azure Functions

[AleksandrSor]

Apparently, lib2git cant find correct native binaries so I helped it with this trick
I had all needed binaries in /app/runtimes/ so i added env variable into my Dockerfile
like this

FROM base AS final

ENV LD_LIBRARY_PATH=/app/runtimes/debian.9-x64/native/

work for dotnet core 3.0 (aspnet:3.0-buster-slim)

[jayakumarj85]

As of now libgit2sharp provides the native libraries for the following linux distributions,
win-x86
win-x64
win-arm64
win
unix
ubuntu.18.04-x64
ubuntu.16.04-arm64
rhel-x64
osx
linux-x64
fedora-x64
debian.9-x64
debian-arm64
alpine.3.9-x64
alpine-x64

In such case using ubuntu 19.04 is not going to work. Try using Ubuntu 18.04 and see if it works.

Otherwise try switching to any of the above mentioned linux distributions.

[matilote]

/root/.nuget/packages/gitversiontask/5.1.2/build/GitVersionTask.targets(10,9): error : PlatformNotSupportedException: debian.9-arm64
Tried different arm64 distributions with no luck.

[xJonathanLEI]

Encountered the same issue when running in Docker. Changed my runtime from:

FROM mcr.microsoft.com/dotnet/core/aspnet:3.1

to

FROM mcr.microsoft.com/dotnet/core/aspnet:3.1-bionic

solves the problem.

[nZeus]

I tried mcr.microsoft.com/dotnet/core/sdk:3.1-bionic and it works! 🎉

[paulostradioti]

For me, it worked with mcr.microsoft.com/dotnet/core/sdk:3.1-alpine and mcr.microsoft.com/dotnet/core/runtime:3.1-alpine.

Thanks

[ahmedhammad97]

Looks like the problem is that the binary git2-7ce88e6 is built to the wrong directory, so the program is not able to load it when it look for it in the right one.

What worked for me was adding an MSBuild PostBuildEvent to .csproj which copies the git2-7ce88e6 binary from the directory it was built, to the directory it is expected to run from.
These directories might differ, so it is better to check them manually.

[trondhindenes]

Try using Ubuntu 18.04

this is becoming a problem. Is there any plan to support newer ubuntu versions than 18.x?

[bording]

this is becoming a problem. Is there any plan to support newer ubuntu versions than 18.x?

It's not really sustainable to be constantly chasing support for newer platforms for a number of reasons. There needs to be a native binary compiled to match the versions of the dependencies on the distro.

There are plans to sidestep the entire problem by removing as many dependencies as possible from the native binary, enabling a single linux binary to work with most/all distros.

The biggest piece of work remaining to enable this is #1618.

[patrolez]

Regarding newer Ubuntu:
#1714 (comment)

The most latest NuGet release 0.27-preview works correctly.

The reason is that since Ubuntu Eoan OpenSSL 1.0 was completely removed from shipping within distro.
The same is about the newest Debian.

Shipping a libgit2 linked against OpenSSL 1.1 does the work.
#1747 (comment)