Dear Tom,
That's a great suggestion! However, I prefer open source methods so that I'm not trapped by proprietary software. Do you know if GPC runs under Wine (https://www.winehq.org/)?
I have not tried Wine, but I use Oracle's open-source Virtual Box on my Apple.
I have Red-Hat 32-bit and 64-bit virtual machines, and Windows 7 32-bit and 64-bit. I compiled GPC for all but the Windows 64-bit, with help from other GPC users, but recorded how to do it here, with binaries:
http://alignment.hep.brandeis.edu/Software/Pascal/Pascal.html
The Windows 32-bit GPC binary works fine on 64-bit Windows. But the fastest GPC code I get on the 64-bit linux machine.
Yours, Kevan