Install Erlang on a Mac

To install Erlang on your Mac, follow these simple steps:

1. download the latest source file from the official Erlang site here.
2. open the Terminal
3. go to the folder where you’ve saved the .gz source file
4. run the following command: tar –xzf otp_src_R15B01.tar.gz (replace the filename with the name of the file you’ve downloaded)
5. then go into the unzipped folder in the Terminal, e.g. cd otp_src_R15B01
6. type in ./configure
7. then make
8. and finally sudo make install

voila, you’re done!