and follow the instructions.
If you get a message like: "On OSX only CLANG compilers are supported"
In another terminal type: xcodebuild -find clang
Similarily for: Please select the CLANG C++ compiler that will be used to build packages:
xcodebuild -find clang++
It will ask for two installation paths, one for EUPS itself and one for the software installed via EUPS packages. It will also ask if ICC and MKL should be used (which leads to a set of additional questions). The script can also modify the login-scripts to setup EUPS every time you log in. After confirming the settings the script will download and install EUPS.