@kolban SOLVED The contents of the directory pointed by IDF_PATH is shown below. esp32IDF.jpg It was eclipse mars. I avoided to use eclipse neon since I had some settings and installed tool-chains, plugins. Switching the IDE to neon from eclipse solved the problem and now it is working fine. Thanks ...

I am able to make and upload the flash in esp 32 by terminal in linux and it is working properly. As per the Kolban book I tried to setup the environment in eclipse and my path variables are shown in the picture as in attachment. I am trying to build the project and I am encountering the error 18:47...