I tried following tutorial to use c++ assemblies in nanoframework: Interop in Net Framework
I don't get any further with the cmake options!? Where do I find or how do I insert the cmake-variants.json file for ESP32 and where to place it? I have installed cmake options for Visual Studio.
I also can not find the file in the nanoframework sample: Interop Sample
Thanks in advance
You need to add it to a local clone of the nf-interpreter repository, which you'll use to build an image. Instructions for building for ESP32 can be found here.