From owner-freebsd-ports@FreeBSD.ORG  Sun Nov 17 13:42:54 2013
Return-Path: <owner-freebsd-ports@FreeBSD.ORG>
Delivered-To: freebsd-ports@freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org [8.8.178.115])
 (using TLSv1 with cipher ADH-AES256-SHA (256/256 bits))
 (No client certificate requested)
 by hub.freebsd.org (Postfix) with ESMTPS id BB0E2BF4
 for <freebsd-ports@freebsd.org>; Sun, 17 Nov 2013 13:42:54 +0000 (UTC)
Received: from mailrelay002.isp.belgacom.be (mailrelay002.isp.belgacom.be
 [195.238.6.175]) by mx1.freebsd.org (Postfix) with ESMTP id 4FFB72EBB
 for <freebsd-ports@freebsd.org>; Sun, 17 Nov 2013 13:42:53 +0000 (UTC)
X-Belgacom-Dynamic: yes
X-IronPort-Anti-Spam-Filtered: true
X-IronPort-Anti-Spam-Result: AqwNADuxiFJbs6sV/2dsb2JhbABZgweNa69QgnuBDxd0giUBAQU6HCMQCxgJJQ8qHgaIGAHBCBePaQeEMQOYD5IOgyk7
Received: from 21.171-179-91.adsl-dyn.isp.belgacom.be (HELO
 kalimero.tijl.coosemans.org) ([91.179.171.21])
 by relay.skynet.be with ESMTP; 17 Nov 2013 14:42:46 +0100
Received: from kalimero.tijl.coosemans.org (kalimero.tijl.coosemans.org
 [127.0.0.1])
 by kalimero.tijl.coosemans.org (8.14.7/8.14.7) with ESMTP id rAHDgilt012967;
 Sun, 17 Nov 2013 14:42:45 +0100 (CET)
 (envelope-from tijl@coosemans.org)
Date: Sun, 17 Nov 2013 14:42:43 +0100
From: Tijl Coosemans <tijl@coosemans.org>
To: Ajtim <lumiwa@gmail.com>
Subject: Re: why to the same versions of clang
Message-ID: <20131117144243.55a09ff7@kalimero.tijl.coosemans.org>
In-Reply-To: <3579085.dv39n1IBRa@lumiwa.farms.net>
References: <3579085.dv39n1IBRa@lumiwa.farms.net>
Mime-Version: 1.0
Content-Type: text/plain; charset=US-ASCII
Content-Transfer-Encoding: 7bit
Cc: freebsd-ports@freebsd.org
X-BeenThere: freebsd-ports@freebsd.org
X-Mailman-Version: 2.1.16
Precedence: list
List-Id: Porting software to FreeBSD <freebsd-ports.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/options/freebsd-ports>,
 <mailto:freebsd-ports-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-ports/>
List-Post: <mailto:freebsd-ports@freebsd.org>
List-Help: <mailto:freebsd-ports-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-ports>,
 <mailto:freebsd-ports-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Sun, 17 Nov 2013 13:42:54 -0000

On Sat, 16 Nov 2013 07:10:14 -0500 Ajtim wrote:
> I like to know what is different with default clang on FreeBSD
> 10.0-BETA3 and cland from /devel.  I like to install blender and
> graphics/blender and graphics/openshadinglanguage need/wanted clang
> from /devel. The same version as I have:
> clang -v
> FreeBSD clang version 3.3 (tags/RELEASE_33/final 183502) 20130610
> Target: x86_64-unknown-freebsd10.0
> Thread model: posix

The LLVM in base only provides what's needed for Clang.  In fact there
are no LLVM libraries and tools installed at all.

So ports that use LLVM like openshadinglanguage (which is essentially
a compiler implemented on top of LLVM) need to depend on one of the
LLVM ports.  This particular port also uses clang to compile some C++
code into LLVM bitcode and this bitcode needs to work with the version
of LLVM that it uses.  Currently you could use base system clang for
that because the versions are the same, but when FreeBSD switches to
Clang/LLVM 3.4 that will no longer be the case.