Always use a bytecode boot.exe

[ghost]

• it speeds up the build of jbuilder
• it fixes Dune in master build on ppc64 (Fedora Rawhide, OCaml 4.06) #446

[dra27]

Gosh, if it's quicker everywhere then this really is a no-brainer!

Makes one wonder if it's worth doing the entire thing in the toploop?

[ghost]

Makes one wonder if it's worth doing the entire thing in the toploop?

Then there is the problem of dynamically loading unix.cma, which is not portable. It's also not very convenient for working on jbuilder itself.

[dra27]

That's true about the dynamic loading. I guess it was briefly tempting to be able to have ocaml bootstrap.ml do everything (although there's no reason why the release version couldn't run boot.exe having built it too, I suppose)

For the other, I didn't think anyone else used boot.exe for developing too 😉