RFC: check-in repl.c and friends

[saghul]

I was about to embark on forward-porting my WASI patches, but I realized that due to the codegen step, the build becomes quite complex. In fact I don't know how to solve that...

The same thing applies to cross-compiling for MinGW for example.

It would greatly simplify cross-compiling if we checked the C files in. Since there is no bytecode incompatibility shenanigans now, it should be safe to do.

Thoughts?

/cc @bnoordhuis

[bnoordhuis]

As long as it doesn't change too often and doesn't get out of sync with repl.js, I'm okay with that.

[saghul]

I generqally doesn't, and I could automate a check in GHA by regenerating it and checking if there is a diff.

[chqrlie]

Would you move these files to a subdirectory? Do they get rebuilt if the JavaScript source file changes?

[saghul]

They are not regenerated automatically, make codegen does it, but the CI checks if they are out of sync and will fail, so there is that safety net.

Any suggestion for the generated directory?

[chqrlie]

I guess we cannot use codegen as it would conflict with the make target, how about gen ?

[saghul]

Sounds good!