Raspberry Pi arm64 error

[DrZhong]

https://www.nuget.org/packages/Avalonia.Skia.Linux.Natives/1.68.0.2
does't work with Raspberry Pi arm64

Unhandled Exception: System.DllNotFoundException: Unable to load shared library 'libSkiaSharp' or one of its dependencies. In order to help diagnose loading problems, consider setting the LD_DEBUG environment variable: liblibSkiaSharp: cannot open shared object file: No such file or directory at SkiaSharp.SkiaApi.gr_glinterface_assemble_gl_interface(IntPtr ctx, IntPtr get) at SkiaSharp.GRGlInterface.AssembleGlInterface(Object context, GRGlGetProcDelegate get) at SkiaSharp.GRGlInterface.AssembleGlInterface(GRGlGetProcDelegate get) at Avalonia.Skia.PlatformRenderInterface..ctor() at Avalonia.Skia.SkiaPlatform.Initialize() at Avalonia.Controls.AppBuilderBase1.Setup()
at Avalonia.Controls.AppBuilderBase1.Start(AppMainDelegate main, String[] args) at UdsUI.Program.Main(String[] args) in /home/curtisy/Projects/Avalonia/UdsUI/Program.cs:line 12

[jclapis]

I ran into this today as well. I worked around it by building v1.68.1.1 for ARM64 on the Pi itself, and dropping the resulting libSkiaSharp.so file directly into the output directory of my Avalonia app (so it's in the same dir as SkiaSharp.dll). My app ran fine on the Pi after that. I've attached the SO here in case anyone wants to try using it until official support is added.

libSkiaSharp.zip

[Gillibald]

Did you use the bootstrapper provided by SkiaSharp to build or did you manually run the build? Ideally, we would cross-compile it but haven't figured out to do that.

[jmacato]

easier solution right now would be to use JellyFin's SkiaSharp lib for ARM
https://www.nuget.org/packages/Jellyfin.SkiaSharp.NativeAssets.LinuxArm/

[jmacato]

@Gillibald we need to figure out how to x-compile these libs for our own SkiaSharp package...

[jclapis]

Did you use the bootstrapper provided by SkiaSharp to build or did you manually run the build? Ideally, we would cross-compile it but haven't figured out to do that.

It was a fairly manual process - I'll write a gist about it and link it here when it's ready. In a nutshell, I mostly followed these steps but had to build gn from source (since the included binary is for x64), had to use the distro's version of ninja since depot_tools doesn't know what to do with aarch64, and had to make a few other tweaks (like this one).

[jclapis]

Okay, here's my writeup of the process I used. Hope it helps!

[kekekeks]

SkiaSharp now has built-in support for arm and arm64