symbol lookup error: ./bin/Debug/net6.0/runtimes/linux-x64/native/libpthread.so.0: undefined symbol: __libc_pthread_init, version GLIBC_PRIVATE

[bjornharrtell]

Getting this error both with 3.6.1.120 and 3.6.3.100.

My OS is Ubuntu 23.04.

dotnet sdk: 6.0.116 [/usr/lib/dotnet/sdk]

dotnet runtime: Microsoft.AspNetCore.App 6.0.16 [/usr/lib/dotnet/shared/Microsoft.AspNetCore.App] Microsoft.NETCore.App 6.0.16 [/usr/lib/dotnet/shared/Microsoft.NETCore.App]

[MaxRev-Dev]

Hi @bjornharrtell. Your setup might be missing something. Here are the tests from the main branch. I'm using WSL2 with Ubuntu 22.04 installed (bare distro) upgraded to 23.04. Note that this was installed in 5 min. and without any additional dependencies but .NET 7.

[MaxRev-Dev]

I've found this also - https://github.com/ros2/ros2/issues/1406 Please, tell me if this works for you.

[bjornharrtell]

No luck yet. That referenced issue seems to have to do with snap installed versions and as far as I can tell that is not my situation.

[bjornharrtell]

I will see if I can setup a reproduction in a CI/docker setup.

[bjornharrtell]

Minimal reproduction at https://github.com/bjornharrtell/gdal.netcore.issue100.

It runs without issue when using docker image mcr.microsoft.com/dotnet/sdk:7.0 but fails with image ubuntu:23.04 (and dotnet7 added). It also fails when changed to .net6 target on image ubuntu:22.04 and dotnet6 (7 not readily available on 22.04).

[bjornharrtell]

However I cannot reproduce when run on ubuntu 22.04 as github action (https://github.com/bjornharrtell/gdal.netcore.issue100/actions/runs/4900739972/jobs/8751605421#step:6:9). Very strange...

[bjornharrtell]

I suspect the ubuntu packaged dotnet. It's not used at github actions because a newer version is bundled in their ubuntu images.

[bjornharrtell]

Confirmed, if I install dotnet using packages.microsoft.com I cannot reproduce this issue.

[MaxRev-Dev]

I've found a collision between the system's libpthread.so.0 and the packaged one. The workaround is to remove the packaged libpthread.so.0 before starting the app.

This is quite similar to #68. I will patch LinuxRuntime packages removing system-specific dependencies (yet again).

For newcomers: the libpthread library should be available in the system by default as a base package. But if it's missing, you can always install this package with sudo apt-get install libpthread-stubs0-dev

[bjornharrtell]

Confirmed, adding this to csproj to workaround for now:

<Target Name="FixIssue100" AfterTargets="AfterBuild">
  <Delete Files="bin/Debug/net6.0/runtimes/linux-x64/native/libpthread.so.0" />
</Target>