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13980Re: "ocaml_beginners"::[] using opam ?

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  • Vu Ngoc San
    Nov 6, 2013
      thanks a lot, indeed it seems to work ! great.
      I tried with sdl. I remove my old installation of ocamlsdl, and then ocamlfind was able to
      use the opam version.

      in fact : `ocamlfind ocamlc -where` gives
      because this is where the standard library is, but
      `ocamlfind printconf` tells me that the search path is

      maybe some words about this on the opam FAQ would be welcome. At least, in order to know how all is supposed to work.


      Le 06/11/2013 20:08, rixed@... a écrit :

      -[ Wed, Nov 06, 2013 at 05:44:01PM +0100, Vu Ngoc San ]----
      > The stupid thing is that I don't know how to do 2). The packages seem to
      > be installed in
      > $HOME/.opam/system/lib, whereas I have a preexisting ocaml install (ubuntu).
      > Do it mean that I need to include this DIR in my Makefile ?

      You should use ocamlfind (opam install ocamlfind).
      Then, supposed your PATH includes your opam switch bindir
      (which it should), then:

      ocamlfind ocamlc -where

      should point toward your opam switch libdir.
      At this point, compiling using ocamlfind boils down to:

      ocamlfind ocamlopt -package lib1,lib2,lib3 ...other-options... -c module.ml

      where lib1 etc are the name registered in the META files (usually the same as
      the opam package name)

      Since OcamlMakefile already uses ocamlfind (apparently for libraries specified
      by the PACKS parameter) I guess everything should runs all right.

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