m4 command not found after manual install

Just finished installing ubuntu 16.04.1 desktop version. Now I am trying to install m4. So far installed m4 as follows. 1. Downloaded m4-1.4.18.tar.gz 2. tar -xvzf m4-1.4.18.tar.gz 3. cd m4-1.4.18 4. ./configure --prefix=/usr/local/m4 5. make 6. sudo make install Now when I type: m4 --version It still says: The program 'm4' is currently not installed.... What step am I missing? **Note**: I do not have internet access on this machine.