[erlang-questions] incude_lib question

Boris Okner <>
Mon Jun 29 19:52:31 CEST 2009


Many thanks to all, you've been most helpful, I was able to resolve the
problem.

Boris

On Mon, Jun 29, 2009 at 9:17 AM, <> wrote:

> Too bad the documentation isn't searchable and is painfully badly indexed,
> eh Peter?
>
> To be more helpful, bokner:
>
> The first link you need to read is
> http://www.erlang.org/doc/reference_manual/macros.html#7.1. This
> references the function code:lib_dir(). Hitting the function index nets us
> http://www.erlang.org/doc/man/code.html#lib_dir-1 for that function. This
> gives us the explanation that the application must be "located under
> $OTPROOT/lib or on a directory referred to via the ERL_LIBS environment
> variable".
>
> Now further explanation in that same function tells us that the application
> must be "a regular directory called Name or Name-Vsn in the code path with
> an ebin subdirectory". So one possibility is that your application doesn't
> have an ebin subdirectory. If it doesn't, code:lib_dir() won't find it I'm
> wagering. Since I can't see your setup I can't really guess for certain.
>
> In case this isn't the cause, let's take a look at
> http://www.erlang.org/doc/design_principles/part_frame.html to see if
> there's any clues. There's a whole section on "included applications" so
> that looks like it might be a clue there. My eye is drawn toward
> http://www.erlang.org/doc/design_principles/included_applications.html#8.2where it points out the "included_applications" key in the .app file. Double
> check that you're actually including the application there, perhaps?
>
> (Looking in the Armstrong book I'm not seeing anything there that's
> particularly helpful in answering your question so I think the "any erlang
> book" isn't exactly a helpful comment either since there's at least one that
> doesn't.)
>
>
> On Jun 29, 2009 8:39pm, Peter Lund <> wrote:
> > Try R13A doc: OTP/doc/R13A/erts-5.7/doc/html/index.html or any erlang
> book.
> >
> >
> >
> > bokner skrev:
> >
> >
> > Why include_lib works with application names for some applications and
> >
> > doesn't for others? For example, I have exmpp application installed in
> >
> > my Erlang lib directory, and include_lib doesn't see headers when I
> >
> > do:
> >
> >
> >
> > include_lib("exmpp/include/some_header.hrl"),
> >
> >
> >
> > while it works for crypto, mnesia, kernel apps etc.?
> >
> >
> >
> > There must be some packaging option that affects this, but I couldn't
> >
> > find it. Thank you for help.
> >
> >
> >
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> >
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> >
> > erlang-questions (at) erlang.org
> >
> >
> >
> >
> >
> >
> >
> >
> >
> >
> > ________________________________________________________________
> >
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> >
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> >
> >
> >
>


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