From: Yitzhak Mandelbaum <yitzhak@research.att.com>
To: Eric Cooper <ecc@cmu.edu>
Cc: caml-list@yquem.inria.fr
Subject: Re: [Caml-list] Ocamlnet and EINPROGRESS
Date: Wed, 2 Apr 2008 22:43:07 -0400 [thread overview]
Message-ID: <2E48665C-67B4-4182-BC23-EBA1A6DF9BF6@research.att.com> (raw)
In-Reply-To: <20080403023058.GA22150@stratocaster.home>
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Its a little more complicated than that. The problem arises when
linking with 1) a library that links with Unix and 2) a file that
depends on Unix. I've found a minimal example that fails on my system
(OS X). It involves 4 files: Makefile, mintime.ml, unixprog.ml,
minprog.ml (names chosen arbitrarily):
########################
Makefile:
########################
all: minprog
timelib.cma: mintime.ml
ocamlfind ocamlc -package unix -linkpkg \
-o $@ -a mintime.ml
minprog: timelib.cma unixprog.ml
ocamlfind ocamlc $(INCLUDES) -thread -o $@ \
-package netclient -linkpkg $^ minprog.ml
########################
mintime.ml:
#######################
let now () = Unix.time ()
########################
unixprog.ml:
#######################
let foo x =
let in_channel, out_channel = Unix.open_process "cat" in
let read_fd = Unix.descr_of_in_channel in_channel in
let write_fd = Unix.descr_of_out_channel out_channel in
()
########################
minprog.ml:
#######################
let mystring = Http_client.Convenience.http_get "http://www.cnn.com"
Then,
make minprog
./minprog
results in
Fatal error: exception Unix.Unix_error(38, "connect", "")
Yitzhak
On Apr 2, 2008, at 10:30 PM, Eric Cooper wrote:
> On Wed, Apr 02, 2008 at 10:08:55PM -0400, Yitzhak Mandelbaum wrote:
>> Sure, here's one:
>>
>> let mystring = Http_client.Convenience.http_get "http://
>> www.cnn.com"
>>
>> But, whether or not it raises the exception depends what I link it
>> with, which is the essential problem.
>
> On my (Debian) system, I can't build that program without linking in
> the Unix module, since it's referenced by almost all of the ocamlnet
> modules. So I don't understand the problem you're seeing.
>
> --
> Eric Cooper e c c @ c m u . e d u
>
> _______________________________________________
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--------------------------------------------------
Yitzhak Mandelbaum
AT&T Labs - Research
http://www.research.att.com/~yitzhak
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next prev parent reply other threads:[~2008-04-03 2:43 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-04-03 1:06 Yitzhak Mandelbaum
2008-04-03 1:52 ` [Caml-list] " Eric Cooper
2008-04-03 2:08 ` Yitzhak Mandelbaum
2008-04-03 2:30 ` Eric Cooper
2008-04-03 2:43 ` Yitzhak Mandelbaum [this message]
2008-04-03 7:12 ` Stéphane Glondu
2008-04-03 13:33 ` Dario Teixeira
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