MacOS Catalina 10.15.7 System.TypeInitializationException (DLL NotFound)

[grzesl]

Hello,

Im using Visual Studio for Mac and I download from NuGet 2 packages:

When I run line of code:

using (MagickImage image = new MagickImage("tool.png"))

Im getting error:

Should I initialize library before using it ore something?
Maybe my version of system is more restricted about using not signed library?

Have you got any idea what's I'm doing wrong?

[dlemstra]

I suspect that the library is not copied from the Native folder to the output? No idea why that did not happen though.

[grzesl]

Hello,
Thanks for quick respond.

I have copy the native library from packages to Debug folder and run code with no success. I try to get some information from inside library and I have got:

Any idea?

[dlemstra]

Strange that you don't see the inner exception. Maybe the library cannot be loaded due to dependency issues? What is the output of ld and ldd for the native library?

[grzesl]

This is the output (correct me if You expected something else ):

(ldd)

% otool -L Magick.Native-Q16-x64.dll.dylib
Magick.Native-Q16-x64.dll.dylib:
@rpath/libMagick.Native-Q16-x64.dll.dylib (compatibility version 0.0.0, current version 0.0.0)
/usr/lib/libiconv.2.dylib (compatibility version 7.0.0, current version 7.0.0)
/usr/lib/libresolv.9.dylib (compatibility version 1.0.0, current version 1.0.0)
/usr/lib/libc++.1.dylib (compatibility version 1.0.0, current version 902.1.0)
/usr/lib/libSystem.B.dylib (compatibility version 1.0.0, current version 1281.100.1)

(ld)

% ld Magick.Native-Q16-x64.dll.dylib
ld: warning: platform not specified
ld: warning: -arch not specified
ld: warning: No platform min-version specified on command line
ld: warning: ignoring file Magick.Native-Q16-x64.dll.dylib, building for -unknown but attempting to link with file built for macOS-x86_64
Undefined symbols for architecture unknown:
"_main", referenced from:
implicit entry/start for main executable
ld: symbol(s) not found for architecture unknown

[dlemstra]

I don't have a mac so I don't know what to expect 😁The output looks okay to me.

[grzesl]

Hi, I finally get the library running. In output of otool I found that library has name:
libMagick.Native-Q16-x64.dll.dylib
so I change native library file name from
Magick.Native-Q16-x64.dll.dylib -> libMagick.Native-Q16-x64.dll.dylib
and copy it to /usr/local/lib

Now library works.
I don't know exactly what is current path in my project (Debug folder does not worked).

I think there is some native library name problem in the library.