- Python 3.8 or newer - https://www.python.org/downloads/
- xtensa-lx106-elf-gcc 9.2 toolchain or newer - https://github.com/earlephilhower/esp-quick-toolchain/releases
run python build.py
This will produce install directory in your build folder. You need to copy it into your toolchain as SDK subfolder.
Copy, tweak and include usage directory in your project.