Can anyone explain this change of net471 to netcoreapp3.1?

[Sakuwwz]

Hello community,
I have recently updated my project from unity 2020.1 to 2020.3. When I check my build.gradle file, I noticed that these have changed as per in the image.

Previous - commandLine(workingDir + "/src/main/Il2CppOutputProject/IL2CPP/build/deploy/net471/il2cpp.exe"
has been changed to commandLine(workingDir + "/src/main/Il2CppOutputProject/IL2CPP/build/deploy/netcoreapp3.1/il2cpp.exe"

additionally, there is noCompress = ['.ress', '.resource', '.obb'] + unityStreamingAssets.tokenize(', ') on aaptOptions{}. Can someone explain me why these change happens please?
Thank you

[JoshPeterson]

The il2cpp.exe utility, which is a managed application that converts .NET IL code into C++ code for machine-specific compilation changed. That utility used to be a .NET Framework application, and is now a .NET Core application.

[Sakuwwz]

Hi @JoshPeterson Thank you very much for your reply. I hope that there is no issue of this change then?

[Sakuwwz]

@JoshPeterson Once I’ve upgraded and built the project I’m having an issue as per this thread which I created separately. are these errors related to this?

error: use of undeclared identifier 'il2cpp_codegen_initialize_method

I have a unity project that I’m using as a library for unity. I upgraded my old project to unity 2020.3 and I’m having a building error like this. D:\project\unityLibrary\src\main\Il2CppOutputProject\Source\il2cppOutput\Il2CppAttributes.cpp:8870:3: error: use of undeclared identifier 'il2cpp_codegen_initialize_method' il2cpp_codegen_initialize_method (PropertyInfo_t_CustomAttributesCacheGenerator_MetadataUsageId); ^ D:\project\unityLibrary\src\main\Il2CppOutputPr…

[JoshPeterson]

Correct, this should just make il2cpp.exe faster, that is all!

[JoshPeterson]

@Sakuwwz

@JoshPeterson Once I’ve upgraded and built the project I’m having an issue as per this thread. Are those errors related to each other?

https://discussions.unity.com/t/860056

I don’t think they are related. I’m unclear why that error occurs though - it looks like a header file cannot be found.

[Sakuwwz]

@JoshPeterson

I don’t think they are related. I’m unclear why that error occurs though - it looks like a header file cannot be found.

Yes, the header file is not generated when I export the project. I’ve disabled the Strip engine code to solve another issue as suggested in another thread.

[JoshPeterson]

@Sakuwwz

Yes, the header file is not generated when I export the project. I’ve disabled the Strip engine code to solve another issue as suggested in another thread.

This should not be a generated header. It is shipped with the Unity installation.

[Sakuwwz]

@JoshPeterson

This should not be a generated header. It is shipped with the Unity installation.

I’m using unity 2020.3.6f1. is This could be related to the editor or is this comes with a change of setting?

[JoshPeterson]

@Sakuwwz

I’m using unity 2020.3.6f1. is This could be related to the editor or is this comes with a change of setting?

Nothing about the header where the method in the error exists has changed in many Unity releases. There is not setting I am aware of that should impact this either.

[Sakuwwz]

I have tried with an empty project as well. Neither of these exports contains Il2cppAttribute.cpp file.

[JoshPeterson]

Sorry, I’m unclear how the Il2cppAttribute.cpp file plays into this discussion at all. Maybe I’ve missed something though.

[Sakuwwz]

@JoshPeterson

@JoshPeterson

Sorry, I’m unclear how the Il2cppAttribute.cpp file plays into this discussion at all. Maybe I’ve missed something though.

I’m sorry about that. It’s related to this one - https://forum.unity.com/threads/err…ier-il2cpp_codegen_initialize_method.1188880/ . Both come from the same project upgrade process.