From owner-freebsd-hackers@FreeBSD.ORG  Thu Apr 21 02:33:43 2005
Return-Path: <owner-freebsd-hackers@FreeBSD.ORG>
Delivered-To: freebsd-hackers@freebsd.org
Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125])
	by hub.freebsd.org (Postfix) with ESMTP id 68BFC16A4CE
	for <hackers@freebsd.org>; Thu, 21 Apr 2005 02:33:43 +0000 (GMT)
Received: from harmony.village.org (rover.village.org [168.103.84.182])
	by mx1.FreeBSD.org (Postfix) with ESMTP id A8B3543D31
	for <hackers@freebsd.org>; Thu, 21 Apr 2005 02:33:42 +0000 (GMT)
	(envelope-from imp@bsdimp.com)
Received: from localhost (warner@rover2.village.org [10.0.0.1])
	by harmony.village.org (8.13.3/8.13.1) with ESMTP id j3L2WfsX002898;
	Wed, 20 Apr 2005 20:32:41 -0600 (MDT)
	(envelope-from imp@bsdimp.com)
Date: Wed, 20 Apr 2005 20:32:57 -0600 (MDT)
Message-Id: <20050420.203257.69059150.imp@bsdimp.com>
To: opensource.enthousiat@gmail.com
From: "M. Warner Losh" <imp@bsdimp.com>
In-Reply-To: <37e1316605042019072b5d7a0e@mail.gmail.com>
References: <37e1316605042019072b5d7a0e@mail.gmail.com>
X-Mailer: Mew version 3.3 on Emacs 21.3 / Mule 5.0 (SAKAKI)
Mime-Version: 1.0
Content-Type: Text/Plain; charset=us-ascii
Content-Transfer-Encoding: 7bit
cc: hackers@freebsd.org
Subject: Re: KLD module with C++ iostreams ?
X-BeenThere: freebsd-hackers@freebsd.org
X-Mailman-Version: 2.1.1
Precedence: list
List-Id: Technical Discussions relating to FreeBSD
	<freebsd-hackers.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-hackers>,
	<mailto:freebsd-hackers-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-hackers>
List-Post: <mailto:freebsd-hackers@freebsd.org>
List-Help: <mailto:freebsd-hackers-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-hackers>,
	<mailto:freebsd-hackers-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Thu, 21 Apr 2005 02:33:43 -0000

In message: <37e1316605042019072b5d7a0e@mail.gmail.com>
            Aziz KEZZOU <opensource.enthousiat@gmail.com> writes:
: Hi hackers,
: I am wondering if I can use c++ iostreams inside the kernel ?
: After all the code : cout << "Hello world!" << endl; 
: ends accessing the stdout just like : printf("Hello world!\n"); right ?

Just like, yes.  Exactly the same thing as, no.  The details matter
here.  There's a lot of code to make this happen.

: So if I could compile my KLD module with static linkage to libstdc++,
: that should be ok, right ?

No.

: Any one did or knows how to do this ?

I've done C++ in the kernel before.  IT is realtively easy to get very
basic functioanlity.  You won't have streams, exceptions, etc.
However, to have all the features of C++ would take a lot of work.

Warner