Building CamlP4 extensions for OCaml 4.00
make: *** No rule to make target `4.00', needed by `supported_ocaml_version'. Stop.
Linking the 4.00 directory to 3.12 seems to work okay.
This is already fixed in dev branch. It is a matter of adding a symlink.
This and many other fixes are going to be released very soon as a part of piqi-0.6.0
Fixed in 0.6.0