Error: Unbound module Unix_util

[alx]

Hi,

I'd like to use a raspberry-pi as a Sparkleshare media library.

Sparkleshare is directing to use git-fs to mount media libraries, and I've follow the installation instructions until this error.

Could you give me a hint as I'm not use to omake compilations?

Thanks a lot;

Alex

git-fs $ omake
*** omake: reading OMakefiles
*** omake: finished reading OMakefiles (0.15 sec)
- build build git_fs.cmi
+ ocamlfind ocamlc -package batteries,bigarray,pcre -warn-error A -thread -g -I . -I ../deps/ocamlfuse/lib -c git_fs.ml
File "git_fs.ml", line 150, characters 10-24:
Error: Unbound module Unix_util
*** omake: 17/30 targets are up to date
*** omake: failed (1.31 sec, 0/1 scans, 1/1 rules, 0/58 digests)
*** omake: targets were not rebuilt because of errors:
   build/git_fs.cmi
      depends on: build/git_fs.ml
   build/git_fs.cmo
      depends on: build/git_fs.ml

[alx]

Here is the method containing the error:

(* Run a command, read the output into a BigArray.Array1. *)
let subprocess_read_bigarray cmd offset big_array =
  log (Printf.sprintf "Command %S" (BatString.join " " cmd));
  let out_pipe = SubprocessWithBatIO.open_process_in (Array.of_list cmd) in
  let out_fd = SubprocessWithBatIO.descr_of_input out_pipe in
  (* Can't seek a pipe. Read and ignore. *)
  (* XXX lossy int64 conversion *)
  ignore (BatIO.really_nread out_pipe (Int64.to_int offset));
  (* Returns how much was read, may raise. *)
  let r = Unix_util.read out_fd big_array in
  require_normal_exit out_pipe;
  r

With the line 150 error on this line:

  let r = Unix_util.read out_fd big_array in

[g2p]

I can't really look at this until tomorrow, but for now, Unix_util is supposed to be shipped by ocamlfuse.

[alx]

Thanks for the tips :)

I'm on debian (raspbian for raspi) and I can't get this line from the readme working:

sudo pacman -S omake ocamlfuse-cvs pcre-ocaml ocaml-batteries

That's probably the place where I'm missing ocamlfuse.

Have a nice night,

Alex

[alx]

I've retried the installation from the start, and I think it comes from ocamlfuse dependency (I've never touched a ocaml project):

git-fs $ make -C deps/ocamlfuse/lib
make: Entering directory `/home/alx/code/git-fs/deps/ocamlfuse/lib'
make[1]: Entering directory `/home/alx/code/git-fs/deps/ocamlfuse/lib'
make[1]: `libFuse_stubs.a' is up to date.
ocamlopt -c -thread Result.ml
/bin/sh: 5: ocamlopt: not found
make[1]: *** [Result.cmi] Error 127
make[1]: Leaving directory `/home/alx/code/git-fs/deps/ocamlfuse/lib'
make: *** [native-code-library] Error 2
make: Leaving directory `/home/alx/code/git-fs/deps/ocamlfuse/lib'

I've tried to look around, ocamlopt doesn't seem available for raspi, so I'm not sure what's the next step.

Thanks for your help :)

[g2p]

The aptitude line in the README is supposed to pull in ocaml-nox, which contains the ocamlopt command. If there's an error at that step the rest isn't likely to succeed.

[g2p]

For some reason the debian source package will build ocamlopt on armel but not armhf (edit: OCaml 4.00 does build ocamlopt on armhf). If you look at ocamlfuse's README.md, it gives alternative build instructions that may work on the raspberry:

cd deps/ocamlfuse
ocaml setup.ml -configure
ocaml setup.ml -build

The git-fs OMakefile should be portable enough to do the rest, so please give it a test.

[alx]

Thanks, I've now managed to buid ocaml-fuse and I'm back on the ocamlopt: not found issue.

I'll let you know if I find a way to install OCaml 4.00 on the raspi.

[alx]

Nice, I've succeeded installing OCaml 4.00 thanks to paparazzi wiki : http://paparazzi.enac.fr/wiki/Installation/RaspberryPi

I've retry the make command then, to get this error.

git-fs $ make -C deps/ocamlfuse/lib
make: Entering directory `/home/alx/code/git-fs/deps/ocamlfuse/lib'
make[1]: Entering directory `/home/alx/code/git-fs/deps/ocamlfuse/lib'
make[1]: `libFuse_stubs.a' is up to date.
ocamlc -c -thread Fuse_bindings.mli
File "Fuse_bindings.mli", line 37, characters 8-23:
Error: Unbound module Com
make[1]: *** [Fuse_bindings.cmi] Error 2
make[1]: Leaving directory `/home/alx/code/git-fs/deps/ocamlfuse/lib'
make: *** [native-code-library] Error 2
make: Leaving directory `/home/alx/code/git-fs/deps/ocamlfuse/lib'

I've tried to install opam to see if it helps, but I've got this error: Fatal error: OCaml and preprocessor have incompatible versions

Would it help on the Com module error to have opam running?

[g2p]

Com is part of camlidl. After adding the ocaml-rpi repo, you should be able to run the rest of the installation as normal. You should re-run the aptitude line; there should be no need for OPAM. If everything works well with just the extra repo added, I'll mention it in the README.

[g2p]

That said, if things get much more complicated than that, I suggest not using OCaml 4 and building without ocamlopt. In which case you should downgrade OCaml, make a clean clone, and replace the build instructions with this:

git submodule update --init
make -C deps/ocamlfuse/lib byte-code-library
omake

[g2p]

Oh, the ocaml-rpi repo contains just the compiler, it didn't rebuild camlidl or anything else. That won't work. Please go with the non-ocamlopt instructions, I'll be glad to have someone test them.

[alx]

thanks @g2p, the modified build instructions are working perfectly with the original ocaml-rpi :)

[g2p]

I've updated the README. Thanks!