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[Gianfranco Costamagna <1740576@xxxxxxxxxxxxxxxxxx>]

ocamlfind ocamlopt unix.cmxa -I /usr/lib/x86_64-linux-gnu/ocaml/5.2.0/ocamlbuild/ /usr/lib/x86_64-linux-gnu/ocaml/5.2.0/ocamlbuild/ocamlbuildlib.cmxa -linkpkg myocamlbuild.ml /usr/lib/x86_64-linux-gnu/ocaml/5.2.0/ocamlbuild/ocamlbuild.cmx -o myocamlbuild
File "_none_", line 1:
Alert ocaml_deprecated_auto_include: 
OCaml's lib directory layout changed in 5.0. The unix subdirectory has been
automatically added to the search path, but you should add -I +unix to the
command-line to silence this alert (e.g. by adding unix to the list of
libraries in your dune file, or adding use_unix to your _tags file for
ocamlbuild, or using -package unix for ocamlfind).

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https://bugs.launchpad.net/bugs/1740576

Title:
  Files ocamlbuildlib.cmxa and unix.cmxa make inconsistent assumptions
  over implementation Unix

Status in ocaml package in Ubuntu:
  Fix Released

Bug description:
  Hi, I do not know whether this bug should be here. From the project
  https://github.com/paparazzi/paparazzi , users with Ubuntu 17.10 are
  experiencing the following problem

  + ocamlfind ocamlopt unix.cmxa -I /usr/lib/ocaml/ocamlbuild /usr/lib/ocaml/ocamlbuild/ocamlbuildlib.cmxa -linkpkg myocamlbuild.ml /usr/lib/ocaml/ocamlbuild/ocamlbuild.cmx -o myocamlbuild
  File "myocamlbuild.ml", line 1:
  Error: Files /usr/lib/ocaml/ocamlbuild/ocamlbuildlib.cmxa
         and /usr/lib/ocaml/unix.cmxa
         make inconsistent assumptions over implementation Unix
  Command exited with code 2.

  The maintainers of Paparazzi believe that this is an issue of the
  Ubuntu distribution. In fact, it seems that other distributions are
  facing a similar problem
  https://bugzilla.redhat.com/show_bug.cgi?id=1481916

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