...As of November 2020 the Linux port runs on both Linux and the Apple MAC. However Apple has deprecated the 32 bit mode of the Intel processors. This XPL compiler is not compatible with 64 bit execution.
Building this compiler requires the XPL to C translator written by Daniel Weaver which can be found here: https://sourceforge.net/projects/xpl-compiler/
...This source repository includes all the source and text files from the original DECUS release tape plus a port of the compiler that will run on more modern computers. The compiler port requires 64-bit hardware which is used to emulate the 36-bit data word of the PDP-10.