How to build? about zfc-prover-in-coq

[rikosellic]

Thank you for your notification! This project was originally developed in Coq 8.13 and problems do exist when building with new Coq versions. I've fixed these problems, now all files can be built correctly with Coq 8.15. You may simply run:
coq_makefile -f _CoqProject -o CoqMakefile and then
make -f CoqMakefile to build it.

I haven't tested it on 8.16 yet, hope there will be new issues.

[samuelgruetter]

Thanks, it now works for me with 8.15!

However, when I first ran coq_makefile -f _CoqProject -o CoqMakefile CoqMakefile, I got the following error:

Unknown option 
Usage summary:

I then changed the line endings of _CoqProject from CRLF (DOS/Windows style) to LF (Linux) style, and then it worked.

Also, I found it remarkable that these files take so long to compile. For instance, Peano_plus.v took over 50min on my machine. Do you know what makes it so slow? That might be an interesting topic for your next CoqPL talk, even (or, actually, especially) if you fail to make to faster.

[rikosellic]

I think the problem lies in the not-so-efficient Tauto tactic, but I'm also curious about why it takes that long. It's not our priority to improve its efficiency though, as it is a teaching tool of ZFC rather than a foundational ZFC-based theorem prover. Formalizing Peano arithmetic nearly reaches its boundary, as you can see those predicates like is_plus in Peano_plus.v and the long compiling time. Introducing conventional concepts like addition or functions will inevitably result in the modification of the underlying logic of this tool, this may be another work.

I'm not clear about what happens when a Coq file is compiled. Personally, I'd love to figure it out in my spare time.