Hi,
cmake can be installed with the below command:
$ sudo apt-get install -y protobuf-compiler libprotobuf-dev openssl libssl-dev libcurl4-openssl-dev
$ wget https://github.com/Kitware/CMake/releases/download/v3.22.0/cmake-3.22.0.tar.gz
$ tar xvf cmake-3.22.0.tar.gz
$ cd cmake-3.22.0/
$ ./bootstrap --system-curl
$ make -j$(nproc)
$ sudo make install
Do you build the python3.9 on your own?
Or download it from the web?
Thanks.