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B. Kamiński, P. Szufel: Julia 1.0 Programming Cookbook

Supplement: Julia installation for macOS

In this supplement we explain how to use configure Julia environment on macOS. The discussed examples have been tested with macOS Mojave, version 10.14.2 but Julia is known to work with any macOS version starting from 10.8.

Installing Julia on macOS

The recommended way to install Julia on macOS is to use the binary release that is available at https://julialang.org/downloads/. The steps for macOS platform are very similar to the previously presented examples for Linux.

Julia installer comes as a standard macOS *.dmg file. Hence, you need to simply download it (for example with the Safari browser), double-click the downloaded file and drag the Julia-1.0 icon onto the Applications icon.

Once installed you should check what is the actual location of Julia. Use the following command:

$ ls -d /Applications/Julia*/

This will show the location of your Julia installation (for example /Applications/Julia-1.0.app). In the following steps we assume that Julia 1.0 has been installed in the above folder.

Julia is often used in the command line console (Terminal). It can be started with the following command:

$ /Applications/Julia-1.0.app/Contents/Resources/julia/bin/julia

Typing such a long command is not convenient. Hence we recommend creating a symbolic link to the julia executable file in the /usr/local/bin folder:

$ sudo mkdir /usr/local/bin
$ sudo ln -fs /Applications/Julia-1.0.app/Contents/Resources/julia/bin/julia /usr/local/bin/julia

Note that on some macOS installations the folder /usr/local/bin does not exist by default and hence we create it.

Once the above two commands have been run, Julia REPL can be started in the terminal with the command julia rather than typing the entire path.

When installing packages in Julia a complex compilation process takes place. Hence, compiling some of Julia packages (such as Cbc.jl) requires the Xcode developer tools. Their installation can be started by running the command below (note that this will start the graphical user interface installer):

$ xcode-select --install

Additionally, the developer Command Line Tools are also required and can be installed with the following command (you might need to change the macOS version number at the end of the pkg file name):

$ sudo installer -pkg /Library/Developer/CommandLineTools/Packages/macOS_SDK_headers_for_macOS_10.14.pkg -target /

Installing Juno IDE on macOS

Juno is the recommended Julia development environment for macOS (as well as for Linux and Windows platforms). Once the link to Julia executable (/usr/local/bin/julia) is created the installation is straightforward. Simply go to the Atom website at https://atom.io/, download the installer and double click the pkg file. Start Atom and add the Juno plugin - for details see the Juno paragraph at Julia IDEs recipe in the Chapter 1 of the book. If you follow the discussed Julia installation steps, Juno will just work out-of-the-box.

Integration of other tools on macOS

For configuration of other tools including Anaconda Python and Gnu R have a look at the Linux comments at relevant recipes - there are no differences between Linux and macOS Julia configuration.