Support macOS ARM64 (Apple Silicon)

Is your feature request related to a problem? Please describe

Not a problem. Enhancement.

Describe the solution you’d like

• Generate a build variant for osx-arm64.

Describe alternatives you’ve considered

None available

Additional context

If the build system for the native shared libraries uses the XCode toolchain on macOS, this enhancement should be trivial to produce.

[timdinhdotcom]

I have an Apple M1 and a project that utilize Magick.NET. I’m getting an error at runtime and was hoping someone can point me to the right direction to resolve.

Please note: we only get the error when running on dotnet 6.0 with Apple M1. Running on dotnet 5.0 with x64 is fine.

In my csproj file, I have the following defined

<PackageReference Include="Magick.NET.Core" Version="8.3.3" />
<PackageReference Include="Magick.NET-Q8-AnyCPU" Version="8.3.3" />

At rumtime, we get this error

Microsoft.AspNetCore.Diagnostics.ExceptionHandlerMiddleware: Error: An unhandled exception has occurred while executing the request.

System.TypeInitializationException: The type initializer for 'NativeMagickSettings' threw an exception.
 ---> System.DllNotFoundException: Unable to load shared library 'Magick.Native-Q8-x64.dll' or one of its dependencies. In order to help diagnose loading problems, consider setting the DYLD_PRINT_LIBRARIES environment variable: dlopen(libMagick.Native-Q8-x64.dll, 0x0001): tried: 'libMagick.Native-Q8-x64.dll' (no such file), '/usr/local/lib/libMagick.Native-Q8-x64.dll' (no such file), '/usr/lib/libMagick.Native-Q8-x64.dll' (no such file), '/Users/tiendinh/Projects/oraid/OraIdApi/OraIdApi/libMagick.Native-Q8-x64.dll' (no such file), '/usr/local/lib/libMagick.Native-Q8-x64.dll' (no such file), '/usr/lib/libMagick.Native-Q8-x64.dll' (no such file)
   at ImageMagick.Environment.NativeMethods.X64.Environment_Initialize()
   at ImageMagick.Environment.NativeEnvironment.Initialize() in /_/src/Magick.NET/Native/Helpers/Environment.cs:line 47
   at ImageMagick.Environment.Initialize() in /_/src/Magick.NET/Helpers/Environment.cs:line 19
   at ImageMagick.MagickSettings.NativeMagickSettings..cctor() in /_/src/Magick.NET/Native/Settings/MagickSettings.cs:line 230
   --- End of inner exception stack trace ---
   at ImageMagick.MagickSettings.NativeMagickSettings..ctor() in /_/src/Magick.NET/Native/Settings/MagickSettings.cs:line 246
   at ImageMagick.MagickSettings..ctor() in /_/src/Magick.NET/Settings/MagickSettings.cs:line 33
   at ImageMagick.MagickImage..ctor() in /_/src/Magick.NET/MagickImage.cs:line 39
   at ImageMagick.MagickImage..ctor(Stream stream) in /_/src/Magick.NET/MagickImage.cs:line 187

The line of code that throw the error is

var image = new MagickImage(stream);

It looks like it trying to find the file Magick.Native-Q8-x64.dll. Not sure why, our project is referencing Magick.NET-Q8-AnyCPU

[JunielKatarn]

Is it possible to build Magick.NET and Magick.Native locally for arm64?

It very much should. Assuming @dlemstra uses “standard” macOS tools to build the native bits, it should be pretty simple to just add the arm64 target and it should build the same.

For building, you don’t even need an Apple Silicon machine; just their latest OS (Big Sur).

I may take a stab at it this week.