DRAFT revisions to "To install system wide"

To install system wide

It is highly recommended that you start in your home directory.

cd ~/
git clone --recursive https://github.com/gnuradio/gnuradio.git
cd gnuradio
git checkout maint-3.8 # change `maint-3.8` if you want to use a different version; see releases
mkdir build
cd build
cmake -DCMAKE_BUILD_TYPE=Release -DPYTHON_EXECUTABLE=/usr/bin/python3 ../ # see other options below
Note: if your computer has multiple cores, you can use the -j option for 'make' to speed compilation, e.g. make -j3 but specify one less than the total so the system does not appear to 'freeze'.
make
make test
sudo make install
sudo ldconfig
If you used -DCMAKE_INSTALL_PREFIX=XXX in your 'cmake' command, then your prefix is XXX; otherwise it is /usr/local.
Go to Setting PYTHONPATH to set your PYTHONPATH and LD_LIBRARY_PATH.