log.txt

$ ocamlbuild public.cmxa public.cma public.cmxs
Finished, 9 targets (0 cached) in 00:00:00.

$ ocamlfind install test META _build/public.*
Installed /home/user/.opam/4.04.0/lib/test/public.o
Installed /home/user/.opam/4.04.0/lib/test/public.ml.depends
Installed /home/user/.opam/4.04.0/lib/test/public.ml
Installed /home/user/.opam/4.04.0/lib/test/public.cmxs
Installed /home/user/.opam/4.04.0/lib/test/public.cmxa
Installed /home/user/.opam/4.04.0/lib/test/public.cmx
Installed /home/user/.opam/4.04.0/lib/test/public.cmo
Installed /home/user/.opam/4.04.0/lib/test/public.cmi
Installed /home/user/.opam/4.04.0/lib/test/public.cma
Installed /home/user/.opam/4.04.0/lib/test/public.a
Installed /home/user/.opam/4.04.0/lib/test/META

$ ocaml
        OCaml version 4.04.0

# #use "topfind";;
- : unit = ()
Findlib has been successfully loaded. Additional directives:
  #require "package";;      to load a package
  #list;;                   to list the available packages
  #camlp4o;;                to load camlp4 (standard syntax)
  #camlp4r;;                to load camlp4 (revised syntax)
  #predicates "p,q,...";;   to set these predicates
  Topfind.reset();;         to force that packages will be reloaded
  #thread;;                 to enable threads

- : unit = ()
# #require "test";;
/home/user/.opam/4.04.0/lib/test: added to search path
/home/user/.opam/4.04.0/lib/test/public.cma: loaded
# open Public.A;;
Characters 5-13:
  open Public.A;;
       ^^^^^^^^
Error: This is an alias for module Private, which is missing

META

archive(byte) = "public.cma"
archive(byte, plugin) = "public.cma"
archive(native) = "public.cmxa"
archive(native, plugin) = "public.cmxs"

private.ml

let a = 1

public.ml

module A = Private