Dear Paul,
Is there any other way?
Yes, of course: translation, moving to FPC. But I am attracted to the idea of updating GPC.
Do you have no choice but to run 10.15?
There are hundreds of people using my software, and many of them, being academic, use MacOS. I just bought a new Mac, and I can't run my own software on it native.
Can you run in a virtual machine under 10.15?
Yes, but can't ask my users to do that.
Can you buy a 64 bit compiler for 10.15 and then find ways to get your code to compile by using workarounds for incompatibilities with GPC?
I had no idea there were commercial Pascal compilers out there. Can you point me to one?
Best, Kevan