In the meantime I went a step further - but it's still not solved. I now have the following directory structure inside my project dir: include main MyWifi My CMakeLists.txt in the base project dir looks like follows: cmake_minimum_required( VERSION 3.10 ) set( CMAKE_C_STANDARD 11 ) set( CMAKE_CXX_ST...

I'm fairly new to ESP32 programming - so please forgive if it's a absolut beginners question... I try to program ESP32 code with esp-idf v4.0.1 and C++ classes. But it does not find the C++ includes; e.g. I have a MySingleton.h: #ifndef __MYSINGLETON_H__ #define __MYSINGLETON_H__ #include <utility> ...