From: Philippe Wang <mail@philippewang.info>
To: "Ömer Sinan Ağacan" <omeragacan@gmail.com>
Cc: Dawid Toton <d0@wp.pl>, OCaml Mailing List <caml-list@inria.fr>
Subject: Re: [Caml-list] Re: OCaml binary formats -- how are they linked?
Date: Mon, 17 Jun 2013 13:34:05 +0100 [thread overview]
Message-ID: <CAAFfW_rAzaO24DJKR0=Va3yJFjsfZgzjwmJLFaaNA1wsxka70w@mail.gmail.com> (raw)
In-Reply-To: <CAMQQO3=+6Hed5kW5kv+P9i94odNdbiuS2dNJhcsnzetiyA8Q+w@mail.gmail.com>
On Mon, Jun 17, 2013 at 1:12 PM, Ömer Sinan Ağacan <omeragacan@gmail.com> wrote:
>> $ echo 'print_endline "hello";;' > p.ml
>> $ ocamlc p.ml -o p
>> $ ( head -n 1 p ; cat p.ml p ) > q
>> $ chmod a+x q
>> $ ./q
>> hello
>>
>> Oh, a binary that contains its source code! :-)
>
> Thanks, this is very interesting. As far as I understand, OCamlrun
> looks for a magic number in source file to start interpreting, right?
ocamlrun checks the magic number and a few other properties as well.
For instance, if it can read the bytecode for some reason, it'll raise
an error. If you're interested in how it's implemented, you might want
to look into ocaml-4.00.1/byterun/fix_code.c.
--
Philippe Wang
mail@philippewang.info
prev parent reply other threads:[~2013-06-17 12:34 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-06-14 9:30 [Caml-list] " Ömer Sinan Ağacan
2013-06-14 10:16 ` [Caml-list] " Dawid Toton
2013-06-14 12:02 ` Ömer Sinan Ağacan
2013-06-14 14:26 ` Dawid Toton
2013-06-14 19:17 ` Ömer Sinan Ağacan
2013-06-17 0:18 ` Philippe Wang
2013-06-17 12:12 ` Ömer Sinan Ağacan
2013-06-17 12:34 ` Philippe Wang [this message]
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