Build failure

[fangyi-zhou]

HHVM Version

master 6b4e664

Operating System and Version

macOS High Sierra 10.13.3 (17D102)
ocamlc 4.06.1
clang Apple LLVM version 9.0.0 (clang-900.0.39.2)

Error message

File "ppx/ppx_gen_hhi.ml", line 29, characters 29-30:
Error: This expression has type bytes but an expression was expected of type
         string
make[3]: *** [_build/ppx/ppx_gen_hhi] Error 2
make[2]: *** [hphp/hack/CMakeFiles/hack] Error 2
make[1]: *** [hphp/hack/CMakeFiles/hack.dir/all] Error 2

[fangyi-zhou]

facebook/flow#5270
This may be related

[fredemmott]

We only support 4.05 - and I just checked this works fine with current master. Try brew unlink ocaml; brew unlink ocamlbuild and try again, and HHVM's build process will build a suitable ocamlc.

Also, if you're not already, follow https://docs.hhvm.com/hhvm/installation/building-from-source#building-hhvm__macos

[fangyi-zhou]

Thanks for the fast reply, it would be great if you can specify in the documentations which ocaml versions you're supporting