sure. I didnt set this initially It was generated as part of a template. Let me try nuking .embuild /.embuild/espressif/tools/xtensa-esp-elf/esp-13.2.0_20230928/xtensa-esp-elf/bin/xtensa-esp32-elf-gcc is not a full path to an existing compiler tool. Tell CMake where to find the compiler by setting either the environment variable "CC" or the CMake cache entry CMAKE_C_COMPILER to the full path to the compiler, or to the compiler name if it is in the PATH. Call Stack (most recent call first): CMakeLists.txt:28 (project) The thing that doesnt make sense to me is that I'm supposed to be using a 'std' build and if I understand the documentation correctly there should be no need to have a c compiler as it would be handled by esp-idf-sys, right ?