From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Original-To: caml-list@sympa.inria.fr Delivered-To: caml-list@sympa.inria.fr Received: from mail2-relais-roc.national.inria.fr (mail2-relais-roc.national.inria.fr [192.134.164.83]) by sympa.inria.fr (Postfix) with ESMTPS id 5CA1F7EE51 for ; Wed, 10 Apr 2013 10:49:24 +0200 (CEST) Received-SPF: None (mail2-smtp-roc.national.inria.fr: no sender authenticity information available from domain of julien.signoles@gmail.com) identity=pra; client-ip=74.125.83.46; receiver=mail2-smtp-roc.national.inria.fr; envelope-from="julien.signoles@gmail.com"; x-sender="julien.signoles@gmail.com"; x-conformance=sidf_compatible Received-SPF: Pass (mail2-smtp-roc.national.inria.fr: domain of julien.signoles@gmail.com designates 74.125.83.46 as permitted sender) identity=mailfrom; client-ip=74.125.83.46; receiver=mail2-smtp-roc.national.inria.fr; envelope-from="julien.signoles@gmail.com"; x-sender="julien.signoles@gmail.com"; x-conformance=sidf_compatible; x-record-type="v=spf1" Received-SPF: None (mail2-smtp-roc.national.inria.fr: no sender authenticity information available from domain of postmaster@mail-ee0-f46.google.com) identity=helo; client-ip=74.125.83.46; receiver=mail2-smtp-roc.national.inria.fr; envelope-from="julien.signoles@gmail.com"; x-sender="postmaster@mail-ee0-f46.google.com"; x-conformance=sidf_compatible X-IronPort-Anti-Spam-Filtered: true X-IronPort-Anti-Spam-Result: AkQDAPMlZVFKfVMuk2dsb2JhbABQgzy4cgGINYEICBYOAQEBAQcLFBQEJIIfAQEEAUABGx0BAwELBgUEBzsiAREBBQEcBhOIAQEDCQagJIwvgnuEUQoZJw1ZiH4BBQyPCAeDQQOWeYEhilSDOBYphDA6 X-IPAS-Result: AkQDAPMlZVFKfVMuk2dsb2JhbABQgzy4cgGINYEICBYOAQEBAQcLFBQEJIIfAQEEAUABGx0BAwELBgUEBzsiAREBBQEcBhOIAQEDCQagJIwvgnuEUQoZJw1ZiH4BBQyPCAeDQQOWeYEhilSDOBYphDA6 X-IronPort-AV: E=Sophos;i="4.87,444,1363129200"; d="scan'208";a="12605106" Received: from mail-ee0-f46.google.com ([74.125.83.46]) by mail2-smtp-roc.national.inria.fr with ESMTP/TLS/RC4-SHA; 10 Apr 2013 10:49:24 +0200 Received: by mail-ee0-f46.google.com with SMTP id d49so104323eek.5 for ; Wed, 10 Apr 2013 01:49:23 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:x-received:in-reply-to:references:date:message-id :subject:from:to:cc:content-type; bh=BW73wwUUpMIEfkC+jljkXR2nwpZ1sSMaRqUEjtiqJcY=; b=TBl/D6+wW0LwNCRvOH5TOO/BfqaVY8PVYzMXgAWmBKwKzbg6OMeHsJ0PjgZjc2HPgC K6gYapFO6LwNYI2iezoLaJYJ3NtvRwIlTt1n07QxbAsdoMLITBcBKhpsIgQajMvR4trS 2T4LDu02Oemb4NTHbxMJhNXQMvJ+rwg+cUVnzKlLfzIfG4NRiS1PwIPrYt9hkOG7cynF V/JPEgGq+7GIQPJGEGxYGghlzUFa5dEuU5KTpmjHnyC2wj2rSbr8IJxfjEy9CLPvpQAA HZbZ+NXjhS40WwQRqgn61le4GsH6JqS55t5pkSNe/vqmhMqFvNgz1ay9elwpMXnF/kJZ v0OA== MIME-Version: 1.0 X-Received: by 10.14.216.2 with SMTP id f2mr3224558eep.44.1365583763503; Wed, 10 Apr 2013 01:49:23 -0700 (PDT) Received: by 10.15.99.2 with HTTP; Wed, 10 Apr 2013 01:49:23 -0700 (PDT) In-Reply-To: References: Date: Wed, 10 Apr 2013 10:49:23 +0200 Message-ID: From: Julien Signoles To: =?ISO-8859-1?Q?=C9tienne_Andr=E9?= Cc: Caml List Content-Type: multipart/alternative; boundary=e89a8f22c4db22ac5a04d9fdbf52 Subject: Re: [Caml-list] Build number and date in OCaml? --e89a8f22c4db22ac5a04d9fdbf52 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable Hello, 2013/4/9 =C9tienne Andr=E9 > I've been using OCaml for a couple of years, but without using any > advanced feature; so my question may be a little naive. > Is there any way to insert easily the current date and time of compiling, > as well as, e.g., an incremental build number in an OCaml program? So that it is printed at runtime, e.g., in the program header. > This kind of information is part of your build process and are not directly accessible in OCaml. If you want to access it in your OCaml program, you have to pass them from the build environment to the program environment. As Jeremie Dimino said, the usual way is to general a small OCaml file at build time and to link it to your program. For instance, if you use 'make', you could have the following lines in your Makefile: VERSION=3D... config.ml: Makefile echo "let version =3D \"$(VERSION)\"" > $@ echo "let compilation_date =3D \"`date`\" >> $@ CMO_FILES =3D config.cmo ... (* other cmo files) Of course, it is better to add the corresponding config.mli by hand: config.mli: val version: string val date: string Hope this helps, Julien --e89a8f22c4db22ac5a04d9fdbf52 Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable
Hello,

2013/4/9 =C9tienne Andr=E9 <Etienne.Andre@u= niv-paris13.fr>
I've been using OCaml for a couple of ye= ars, but without using any advanced feature; so my question may be a little= naive.
Is there any way to insert easily the current date and time of compiling, a= s well as, e.g., an incremental build number in an OCaml program?=A0
So that it is printed at runtime, e.g., in the program header.

This kind of information is part of your build proc= ess and are not directly accessible in OCaml. If you want to access it in y= our OCaml program, you have to pass them from the build environment to the = program environment. As Jeremie Dimino said, the usual way is to general a = small OCaml file at build time and to link it to your program.

For instance, if you use 'make', you could have the = following lines in your Makefile:

VERSION=3D...
=
config.ml: Makefile
=A0= echo "let version =3D \"$(VERSION)\"" > $@
=A0 echo "let compilation_date =3D \"`date`\" >= ;> $@
=A0
CMO_FILES =3D config.cmo ... (* ot= her cmo files)

Of course, it is better to add the corresp= onding config.mli by hand:
config.mli:
val version: string
val date: strin= g

Hope this helps,
Julien

--e89a8f22c4db22ac5a04d9fdbf52--