_oasis

OASISFormat: 0.3
Name:        ostreamer
Version:     0.1
Synopsis:    Library to deal with data streams
Authors:     Marek Kubica
License:     PROP
Plugins:     META (0.3), DevFiles (0.3)

Library "ost"
  Path:       src/
  Modules:    Archive
  CSources:   Archive_stubs.c
  CCLib:      -larchive
  BuildTools: ocamlbuild

Executable "ost-launch"
  Path:       src
  BuildTools: ocamlbuild
  CompiledObject: best
  MainIs:     launch.ml

Archive.ml

external version_number: unit -> unit = "ost_version_number"

let version = 0

Archive_stubs.c

#include <caml/mlvalues.h>
#include <archive.h>

CAMLprim value ost_version_number(value unit)
{
    printf("%d\n", archive_version_number());
    return Val_unit;
}

gistfile1.txt

$ ocaml setup.ml -build
findlib: [WARNING] cannot read directory /usr/lib/ocaml/site-lib: No such file or directory
+ ocamlfind ocamlopt -g -linkpkg src/Archive.cmx src/launch.cmx -o src/launch.native
src/launch.o: In function `camlLaunch__entry':
/home/marek/ostreamer/_build/src/launch.ml:3: undefined reference to `ost_version_number'
src/Archive.o: In function `camlArchive':
(.data+0x10): undefined reference to `ost_version_number'
collect2: error: ld returned 1 exit status
File "caml_startup", line 1:
Error: Error during linking
Command exited with code 2.
Compilation unsuccessful after building 13 targets (11 cached) in 00:00:00.
E: Failure("Command ''/usr/bin/ocamlbuild' src/libost_stubs.a src/dllost_stubs.so src/ost.cma src/ost.cmxa src/ost.a src/ost.cmxs src/launch.native -tag debug' terminated with error code 10")

gistfile2.txt

$ ocamlbuild -classic-display src/libost_stubs.a src/dllost_stubs.so src/ost.cma src/ost.cmxa src/ost.a src/ost.cmxs src/launch.native -tag debug
/usr/bin/ocamlopt.opt -I /usr/lib/ocaml/ocamlbuild unix.cmxa /usr/lib/ocaml/ocamlbuild/ocamlbuildlib.cmxa myocamlbuild.ml /usr/lib/ocaml/ocamlbuild/ocamlbuild.cmx -o myocamlbuild
findlib: [WARNING] cannot read directory /usr/lib/ocaml/site-lib: No such file or directory
ocamlfind ocamlc -c src/Archive_stubs.c
mv Archive_stubs.o src/Archive_stubs.o
/usr/bin/ocamlmklib -o src/ost_stubs -larchive src/Archive_stubs.o
ocamlfind ocamldep -modules src/Archive.ml > src/Archive.ml.depends
ocamlfind ocamlc -c -g -I src -o src/Archive.cmo src/Archive.ml
ocamlfind ocamlc -a -dllib -lost_stubs -cclib -lost_stubs -cclib -larchive src/Archive.cmo -o src/ost.cma
ocamlfind ocamlopt -c -g -I src -o src/Archive.cmx src/Archive.ml
ocamlfind ocamlopt -a -cclib -lost_stubs -cclib -larchive src/Archive.cmx -o src/ost.cmxa
ocamlfind ocamlopt -shared -linkall -I src/ src/ost.cmxa -o src/ost.cmxs
ocamlfind ocamldep -modules src/launch.ml > src/launch.ml.depends
ocamlfind ocamlc -c -g -I src -o src/launch.cmo src/launch.ml
ocamlfind ocamlopt -c -g -I src -o src/launch.cmx src/launch.ml
ocamlfind ocamlopt -g -linkpkg src/Archive.cmx src/launch.cmx -o src/launch.native
+ ocamlfind ocamlopt -g -linkpkg src/Archive.cmx src/launch.cmx -o src/launch.native
src/launch.o: In function `camlLaunch__entry':
/home/marek/ostreamer/_build/src/launch.ml:3: undefined reference to `ost_version_number'
src/Archive.o: In function `camlArchive':
(.data+0x10): undefined reference to `ost_version_number'
collect2: error: ld returned 1 exit status
File "caml_startup", line 1:
Error: Error during linking
Command exited with code 2.

launch.ml

let _ =
    print_endline (Printf.sprintf "ost-launch %d" Archive.version);
    Archive.version_number ()