Before You Start
You will need administrator privileges. This gives the installation script access to write-protected parts of the system.
Of all the operating systems, macOS proved to be the most challenging in which to develop a robust set of instructions for installing a multi-threaded version of R and Eagle. Unlike on a Linux and Windows system, here R Open would not install cleanly when an older version of R was present. To get around this problem, we have instead opted to install standard R and replace its single-threaded math libraries with multi-thread (openBLAS) math libraries.
The instructions below look worse than what they actually are. The process is install R, install some compilers to allow R to handle source code, install openBLAS for multi-threaded computation, and then install Eagle.