Failed to link to librt.so.1 on linux

[spocino]

Got this error at runtime:

 2: ERROR
 2:   [Client] 1: rendering faulted with System.DllNotFoundException: Unable to load shared library 'librt' or one of its dependencies. In order to help diagnose loading problems, consider setting the LD_DEBUG environment variable: liblibrt: cannot open shared object file: No such file or directory
 2:      at Aardvark.Service.SharedMemory.Posix.Linux.shmunlink(String name)
 2:      at Aardvark.Service.SharedMemory.Posix.Linux.create(String name, Int64 size)
 2:      at Aardvark.Service.MappedClientRenderTask.recreateMapping(Int64 desiredSize)
 2:      at Aardvark.Service.MappedClientRenderTask.ProcessImage(IFramebuffer target, IRenderbuffer color)
 2:      at Aardvark.Service.ClientRenderTask.Run(AdaptiveToken token, ClientInfo info, ClientState state)
 2:      at <StartupCode$Aardvark-Service>.$Server.arg10@1860-1(Client this, V2i size, C4b background, AdaptiveToken token) (stopping)

I have librt.so.1 installed at /lib

[haraldsteinlechner]

thanks for reporting. as a workaround you could use attribute "useMapping" "false" on the render control. clearly this is a not optimal since it should be robust to missing mapping support. is there a problem with new sharedmem builds @krauthaufen - any clue? for real diagnosis of the actual problem (wich is hard when not having your system) you could use LD_DEBUG=all dotnet yourapp.dll? maybe this gives a clue. otherwise nm or ldd could help to figure out what is missing.

[krauthaufen]

I don't think there is a linux without shared-memory support, so i guess this is related to some version trouble with librt? Maybe we should manually try to load librt.so.1?

[spocino]

I use Fedora 36, and it does have librt. I noticed it attempted to load "liblibrt"

[hyazinthh]

We have recently changed how we import those functions. Your error message looks like you're using an old version of media. Everything is working on my Ubuntu 22.04 system.