Hi @Hertog_Jan ! Starting with version 4.0, ESP-IDF uses a build system based on CMake. In order to provide more seamless integration we also switched to CMake as the source of build configuration. Unfortunately, there is a conflict between CMakeLists.txt used by ESP-IDF and CMakeLists.txt which we generate for CLion. At the moment we’re working on better integration with CLion without this intermediate “hacky” CMakeLists.txt, but there is no ETA for this feature.
In a nutshell, I’d recommend you to rollback to the previous version of the espressif32 platform, e.g.:
platform = espressif32@1.11.2