First module

[Cecil Ward]

I’ve written my first non-trivial module in D. See other thread. 
https://forum.dlang.org/thread/pfjpqcywxrmxwsncyxeq@forum.dlang.org

I’d like to set up something to call it from other modules, and 
specifically I’d like to see if inlining works across module 
boundaries - I have no idea whether it does or not as I don’t 
understand fully in detail how module imports work.

How do I go about setting up such a test harness with LDC (or 
GDC) on either OSX/ARM or Linux Debian x86-64? I’m not sure what 
tools I need.

Note that I cannot use DMD, this code is LDC/GDC-specific. LDC 
would be my preference as that is what it is ultimately aimed at.