iocamlserver

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The error seems to be caused by an upstream packaging problem:

# Skipping generation of .mli
# [...]
#       ocamlc iocamlserver.{cmi,cmo,cmt}
#     ocamlopt filesys.{cmx,o}
#     ocamlopt files.{cmx,o}
#     ocamlopt iocamlserver.{cmx,o}
#     ocamlopt iocamlserver.exe (exit 2)
# (cd _build/default && /usr/bin/ocamlopt.opt -w -40 -g -o iocamlserver.exe -I /home/travis/.opam/system/lib/astring -I /home/travis/.opam/system/lib/atd -I /home/travis/.opam/system/lib/atdgen -I /home/travis/.opam/system/lib/base64 -I /home/travis/.opam/system/lib/biniou -I /home/travis/.opam/system/lib/bytes -I /home/travis/.opam/system/lib/cohttp -I /home/travis/.opam/system/lib/conduit -I /home/travis/.opam/system/lib/cstruct -I /home/travis/.opam/system/lib/ctypes -I /home/travis/.opam/system/lib/easy-format -I /home/travis/.opam/system/lib/fieldslib -I /home/travis/.opam/system/lib/findlib -I /home/travis/.opam/system/lib/fmt -I /home/travis/.opam/system/lib/integers -I /home/travis/.opam/system/lib/iocaml-kernel -I /home/travis/.opam/system/lib/ipaddr -I /home/travis/.opam/system/lib/logs -I /home/travis/.opam/system/lib/lwt -I /home/travis/.opam/system/lib/magic-mime -I /home/travis/.opam/system/lib/menhirLib -I /home/travis/.opam/system/lib/mustache -I /home/travis/.opam/system/lib/ocplib-endian -I /home/travis/.opam/system/lib/re -I /home/travis/.opam/system/lib/result -I /home/travis/.opam/system/lib/sexplib -I /home/travis/.opam/system/lib/stringext -I /home/travis/.opam/system/lib/uchar -I /home/travis/.opam/system/lib/uri -I /home/travis/.opam/system/lib/uuidm -I /home/travis/.opam/system/lib/websocket -I /home/travis/.opam/system/lib/yojson -I /usr/lib/ocaml -I /usr/lib/ocaml/threads findlib.cmxa menhirLib.cmx result.cmxa lwt.cmxa unix.cmxa lwt-log.cmxa bigarray.cmxa re.cmxa re_posix.cmxa stringext.cmxa sexplib.cmxa re_emacs.cmxa uri.cmxa fieldslib.cmxa base64.cmxa cohttp.cmxa ocplib_endian.cmxa astring.cmxa bigstring.cmxa ipaddr.cmxa cstruct.cmxa logs.cmxa conduit.cmxa conduit-lwt.cmxa ipaddr_unix.cmxa lwt-unix.cmxa services.cmxa uchar.cmxa fmt.cmxa cohttp_lwt.cmxa conduit-lwt-unix.cmxa magic-mime.cmxa logs_fmt.cmxa logs_lwt.cmxa websocket.cmxa cohttp_lwt_unix.cmxa easy_format.cmx biniou.cmxa str.cmxa atd.cmxa yojson.cmx threads.cmxa integers.cmxa ctypes.cmxa ctypes-foreign-base.cmxa ctypes-foreign-threaded.cmxa atdgen.cmxa mustache.cmxa websocket_lwt.cmxa uuidm.cmxa kernel.cmx uri_paths.cmx bridge.cmx config.cmx filesys.cmx pages.cmx tutorial.cmx files.cmx iocamlserver.cmx)
# File "_none_", line 1:
# Error: No implementations provided for the following modules:
#          Iocaml_zmq referenced from kernel.cmx, bridge.cmx, iocamlserver.cmx

In particular, iocaml

Jun 24 '17 18:06 rgrinberg

@andrewray ping :)

Jul 07 '17 09:07 rgrinberg

I have also seen this problem, but after installing (like in jbuilder install) iocaml-kernel (from @rgrinberg's jbuilder branch), the compilation goes further. The next problem I see is:

    ocamlopt iocamlserver.exe (exit 2)
(cd _build/default && /home/pveber/.opam/4.05.0/bin/ocamlopt.opt -w -40 -g -o iocamlserver.exe -I /home/pveber/.opam/4.05.0/lib/astring -I /home/pveber/.opam/4.05.0/lib/atd -I /home/pveber/.opam/4.05.0/lib/atdgen -I /home/pveber/.opam/4.05.0/lib/base -I /home/pveber/.opam/4.05.0/lib/base/caml -I /home/pveber/.opam/4.05.0/lib/base/shadow_stdlib -I /home/pveber/.opam/4.05.0/lib/base64 -I /home/pveber/.opam/4.05.0/lib/biniou -I /home/pveber/.opam/4.05.0/lib/bytes -I /home/pveber/.opam/4.05.0/lib/cohttp -I /home/pveber/.opam/4.05.0/lib/cohttp-lwt -I /home/pveber/.opam/4.05.0/lib/cohttp-lwt-unix -I /home/pveber/.opam/4.05.0/lib/conduit -I /home/pveber/.opam/4.05.0/lib/conduit-lwt -I /home/pveber/.opam/4.05.0/lib/conduit-lwt-unix -I /home/pveber/.opam/4.05.0/lib/ctypes -I /home/pveber/.opam/4.05.0/lib/easy-format -I /home/pveber/.opam/4.05.0/lib/fieldslib -I /home/pveber/.opam/4.05.0/lib/findlib -I /home/pveber/.opam/4.05.0/lib/fmt -I /home/pveber/.opam/4.05.0/lib/integers -I /home/pveber/.opam/4.05.0/lib/iocaml-kernel -I /home/pveber/.opam/4.05.0/lib/ipaddr -I /home/pveber/.opam/4.05.0/lib/ipaddr/unix -I /home/pveber/.opam/4.05.0/lib/logs -I /home/pveber/.opam/4.05.0/lib/lwt -I /home/pveber/.opam/4.05.0/lib/lwt_ssl -I /home/pveber/.opam/4.05.0/lib/magic-mime -I /home/pveber/.opam/4.05.0/lib/menhirLib -I /home/pveber/.opam/4.05.0/lib/mustache -I /home/pveber/.opam/4.05.0/lib/ocaml -I /home/pveber/.opam/4.05.0/lib/ocaml/compiler-libs -I /home/pveber/.opam/4.05.0/lib/ocaml/threads -I /home/pveber/.opam/4.05.0/lib/ocp-indent/lexer -I /home/pveber/.opam/4.05.0/lib/ocp-indent/utils -I /home/pveber/.opam/4.05.0/lib/ocp-index/lib -I /home/pveber/.opam/4.05.0/lib/ocplib-endian -I /home/pveber/.opam/4.05.0/lib/ppx_deriving -I /home/pveber/.opam/4.05.0/lib/re -I /home/pveber/.opam/4.05.0/lib/result -I /home/pveber/.opam/4.05.0/lib/sexplib -I /home/pveber/.opam/4.05.0/lib/sexplib/0 -I /home/pveber/.opam/4.05.0/lib/ssl -I /home/pveber/.opam/4.05.0/lib/stringext -I /home/pveber/.opam/4.05.0/lib/uchar -I /home/pveber/.opam/4.05.0/lib/uri -I /home/pveber/.opam/4.05.0/lib/uri/services -I /home/pveber/.opam/4.05.0/lib/uuidm -I /home/pveber/.opam/4.05.0/lib/websocket -I /home/pveber/.opam/4.05.0/lib/websocket-lwt -I /home/pveber/.opam/4.05.0/lib/yojson /home/pveber/.opam/4.05.0/lib/findlib/findlib.cmxa /home/pveber/.opam/4.05.0/lib/menhirLib/menhirLib.cmx /home/pveber/.opam/4.05.0/lib/ocaml/unix.cmxa /home/pveber/.opam/4.05.0/lib/result/result.cmxa /home/pveber/.opam/4.05.0/lib/lwt/lwt.cmxa /home/pveber/.opam/4.05.0/lib/ocaml/bigarray.cmxa /home/pveber/.opam/4.05.0/lib/lwt/lwt_log.cmxa /home/pveber/.opam/4.05.0/lib/base/caml/caml.cmxa /home/pveber/.opam/4.05.0/lib/base/shadow_stdlib/shadow_stdlib.cmxa /home/pveber/.opam/4.05.0/lib/sexplib/0/sexplib0.cmxa /home/pveber/.opam/4.05.0/lib/base/base.cmxa /home/pveber/.opam/4.05.0/lib/re/re.cmxa /home/pveber/.opam/4.05.0/lib/re/re_posix.cmxa /home/pveber/.opam/4.05.0/lib/sexplib/sexplib.cmxa /home/pveber/.opam/4.05.0/lib/stringext/stringext.cmxa /home/pveber/.opam/4.05.0/lib/base64/base64.cmxa /home/pveber/.opam/4.05.0/lib/fieldslib/fieldslib.cmxa /home/pveber/.opam/4.05.0/lib/ppx_deriving/ppx_deriving_runtime.cmxa /home/pveber/.opam/4.05.0/lib/re/re_emacs.cmxa /home/pveber/.opam/4.05.0/lib/uri/uri.cmxa /home/pveber/.opam/4.05.0/lib/cohttp/cohttp.cmxa /home/pveber/.opam/4.05.0/lib/astring/astring.cmxa /home/pveber/.opam/4.05.0/lib/ipaddr/ipaddr.cmxa /home/pveber/.opam/4.05.0/lib/conduit/conduit.cmxa /home/pveber/.opam/4.05.0/lib/conduit-lwt/conduit_lwt.cmxa /home/pveber/.opam/4.05.0/lib/ipaddr/unix/ipaddr_unix.cmxa /home/pveber/.opam/4.05.0/lib/logs/logs.cmxa /home/pveber/.opam/4.05.0/lib/lwt/lwt_unix.cmxa /home/pveber/.opam/4.05.0/lib/uri/services/uri_services.cmxa /home/pveber/.opam/4.05.0/lib/cohttp-lwt/cohttp_lwt.cmxa /home/pveber/.opam/4.05.0/lib/conduit-lwt-unix/conduit_lwt_unix.cmxa /home/pveber/.opam/4.05.0/lib/fmt/fmt.cmxa /home/pveber/.opam/4.05.0/lib/logs/logs_lwt.cmxa /home/pveber/.opam/4.05.0/lib/magic-mime/magic_mime_library.cmxa /home/pveber/.opam/4.05.0/lib/ssl/ssl_threads.cmxa /home/pveber/.opam/4.05.0/lib/ocplib-endian/ocplib_endian.cmxa /home/pveber/.opam/4.05.0/lib/cohttp-lwt-unix/cohttp_lwt_unix.cmxa /home/pveber/.opam/4.05.0/lib/lwt_ssl/lwt_ssl.cmxa /home/pveber/.opam/4.05.0/lib/websocket/websocket.cmxa /home/pveber/.opam/4.05.0/lib/websocket-lwt/websocket_lwt.cmxa /home/pveber/.opam/4.05.0/lib/easy-format/easy_format.cmxa /home/pveber/.opam/4.05.0/lib/ocaml/str.cmxa /home/pveber/.opam/4.05.0/lib/biniou/biniou.cmxa /home/pveber/.opam/4.05.0/lib/atd/atd.cmxa /home/pveber/.opam/4.05.0/lib/yojson/yojson.cmxa /home/pveber/.opam/4.05.0/lib/integers/integers.cmxa /home/pveber/.opam/4.05.0/lib/ocaml/threads/threads.cmxa /home/pveber/.opam/4.05.0/lib/ctypes/ctypes.cmxa /home/pveber/.opam/4.05.0/lib/ctypes/ctypes-foreign-base.cmxa /home/pveber/.opam/4.05.0/lib/ctypes/ctypes-foreign-threaded.cmxa /home/pveber/.opam/4.05.0/lib/ocp-indent/lexer/ocp-indent.lexer.cmxa /home/pveber/.opam/4.05.0/lib/ocaml/compiler-libs/ocamlcommon.cmxa /home/pveber/.opam/4.05.0/lib/ocp-indent/utils/ocp-indent.utils.cmxa /home/pveber/.opam/4.05.0/lib/atdgen/atdgen.cmxa /home/pveber/.opam/4.05.0/lib/ocp-index/lib/ocp-index-lib.cmxa /home/pveber/.opam/4.05.0/lib/uuidm/uuidm.cmxa /home/pveber/.opam/4.05.0/lib/mustache/mustache.cmxa /home/pveber/.opam/4.05.0/lib/iocaml-kernel/iocaml_kernel.cmxa kernel.cmx uri_paths.cmx bridge.cmx config.cmx filesys.cmx pages.cmx tutorial.cmx files.cmx iocamlserver.cmx)
File "_none_", line 1:
Error: Files config.cmx
       and /home/pveber/.opam/4.05.0/lib/ocaml/compiler-libs/ocamlcommon.cmxa
       both define a module named Config

@rgrinberg do you see that?

Oct 04 '17 18:10 pveber