Can be downloaded from: HERE (Change the product version to 5.7.xx). The latest version of 5.7 is recommended, it is possible to use 8.0 but this has not been fully tested.
Notes for guide
* Can only install 32Bit or 64bit - Can't install both (blame Oracle, not us)
* Must match the server version you wish to compile either 32Bit or 64Bit.