Question Get a dll to work in WebGL

I have a dll file that I am using inside Unity and it works when I reference it in Windows build. However when I try make a WebGL build, the build fails because of the dll. How do I make the dll support WebGL as well?

 

You can only use managed DLLs for WebGL, and only such DLLs which use .NET features supported by Unity.
Meaning you cannot just use any DLL file for WebGL, even if it works for other (non AOT) platforms such as Windows.

See here for more info: https://answers.unity.com/questions...n-external-dll-to-work-when-building-f-1.html

 

But is there a way that I can edit my dll file to support webgl platform?

 

When you say „my DLL“ and by that you mean that you created that DLL file, then possibly. As long as the above is true. If you got that DLL from some place and it isn‘t working and there is no explicit mention of „supports Unity WebGL“ then no, absolutely no, it will not work.

 

yeah you are right. I have created this dll. It already is supported on Windows platform. Just have no clue on how to make this possible on WebGL as well.

 

Throw the code of that DLL into the project itself and remove the DLL. Then check if the build works. If it doesn't, you may get a better error message I hope.

But if you use namespaces, classes or other DLLs (ie Windows API native calls like FileBrowser) in the DLL that aren't available in Unity scripting and that was the reason to make that DLL, then it's just not going to work. WebGL (browser in general) is a restricted platform, more so than any other including iOS and UWP.