DllNotFoundException: LottiePlugin assembly on MacOS

[chile109]

Hello, I followed the manual to open sample scene but get the DLL error.

This is my environment detail:

• Apple M2 chip Ventura
• Unity 2021.3.16f1

I saw there is also a similar issue: #6
How can I fixed that?

[simonpham]

Check this
Samsung/rlottie#496

[chile109]

@simonpham After check your solution, seems like it need Cmake rebuild that rlottie?
Sorry I am a Unity Developer and have no experience how to do it, need more clues.

[gindemit]

Hello @chile109, thanks for trying out. It seems that the current compiled native libraries are targeting only x86_64 architecture. And you have the arm64 CPU.

You can check it yourself In terminal:

konstantingindemit@Konstantins-MBP OSX % file libLottiePlugin.dylib
libLottiePlugin.dylib: Mach-O 64-bit dynamically linked shared library x86_64
konstantingindemit@Konstantins-MBP OSX % file librlottie.dylib
librlottie.dylib: Mach-O 64-bit dynamically linked shared library x86_64

Can you please try out the attached files.
Archive.zip
You need to unpack the zip archive, close Unity project and replace the dylib files in the
git/unity-rlottie/unity/RLottieUnity/Assets/LottiePlugin/Plugins/OSX folder.

With the attached files I get following in terminal:

konstantingindemit@Konstantins-MBP rlottieOSXArm64 % file libLottiePlugin.dylib 
libLottiePlugin.dylib: Mach-O universal binary with 2 architectures: [x86_64:Mach-O 64-bit dynamically linked shared library x86_64
- Mach-O 64-bit dynamically linked shared library x86_64] [arm64:Mach-O 64-bit dynamically linked shared library arm64
- Mach-O 64-bit dynamically linked shared library arm64]
libLottiePlugin.dylib (for architecture x86_64):	Mach-O 64-bit dynamically linked shared library x86_64
libLottiePlugin.dylib (for architecture arm64):	Mach-O 64-bit dynamically linked shared library arm64
konstantingindemit@Konstantins-MBP rlottieOSXArm64 % file librlottie.dylib 
librlottie.dylib: Mach-O universal binary with 2 architectures: [x86_64:Mach-O 64-bit dynamically linked shared library x86_64
- Mach-O 64-bit dynamically linked shared library x86_64] [arm64:Mach-O 64-bit dynamically linked shared library arm64
- Mach-O 64-bit dynamically linked shared library arm64]
librlottie.dylib (for architecture x86_64):	Mach-O 64-bit dynamically linked shared library x86_64
librlottie.dylib (for architecture arm64):	Mach-O 64-bit dynamically linked shared library arm64

[chile109]

Hey @gindemit , after replace the libLottiePlugin.dylib the plugin is working now.
Thanks for your help and Detailed explanation!