From owner-freebsd-current@FreeBSD.ORG Mon Sep 10 21:12:18 2012 Return-Path: Delivered-To: current@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id 2DC5E1065670; Mon, 10 Sep 2012 21:12:18 +0000 (UTC) (envelope-from brooks@lor.one-eyed-alien.net) Received: from lor.one-eyed-alien.net (lor.one-eyed-alien.net [69.66.77.232]) by mx1.freebsd.org (Postfix) with ESMTP id B41B98FC0C; Mon, 10 Sep 2012 21:12:13 +0000 (UTC) Received: from lor.one-eyed-alien.net (localhost [127.0.0.1]) by lor.one-eyed-alien.net (8.14.5/8.14.5) with ESMTP id q8ALC7jn065894; Mon, 10 Sep 2012 16:12:07 -0500 (CDT) (envelope-from brooks@lor.one-eyed-alien.net) Received: (from brooks@localhost) by lor.one-eyed-alien.net (8.14.5/8.14.5/Submit) id q8ALC7LH065893; Mon, 10 Sep 2012 16:12:07 -0500 (CDT) (envelope-from brooks) Date: Mon, 10 Sep 2012 16:12:07 -0500 From: Brooks Davis To: current@freebsd.org Message-ID: <20120910211207.GC64920@lor.one-eyed-alien.net> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="8vCeF2GUdMpe9ZbK" Content-Disposition: inline User-Agent: Mutt/1.5.21 (2010-09-15) Cc: toolchain@freebsd.org Subject: Clang as default compiler November 4th X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list Reply-To: toolchain@freebsd.org List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 10 Sep 2012 21:12:18 -0000 --8vCeF2GUdMpe9ZbK Content-Type: text/plain; charset=us-ascii Content-Disposition: inline [Please confine your replies to toolchain@freebsd.org to keep the thread on the most relevant list.] For the past several years we've been working towards migrating from GCC to Clang/LLVM as our default compiler. We intend to ship FreeBSD 10.0 with Clang as the default compiler on i386 and amd64 platforms. To this end, we will make WITH_CLANG_IS_CC the default on i386 and amd64 platforms on November 4th. What does the mean to you? * When you build world after the default is changed /usr/bin/cc, cpp, and c++ will be links to clang. * This means the initial phase of buildworld and "old style" kernel compilation will use clang instead of gcc. This is known to work. * It also means that ports will build with clang by default. A major of ports work, but a significant number are broken or blocked by broken ports. For more information see: http://wiki.freebsd.org/PortsAndClang What issues remain? * The gcc->clang transition currently requires setting CC, CXX, and CPP in addition to WITH_CLANG_IS_CC. I will post a patch to toolchain@ to address this shortly. * Ports compiler selection infrastructure is still under development. * Some ports could build with clang with appropriate tweaks. What can you do to help? * Switch (some of) your systems. Early adoption can help us find bugs. * Fix ports to build with clang. If you don't have a clang system, you can use the CLANG/amd64 or CLANG/i386 build environments on redports.org. tl;dr: Clang will become the default compiler for x86 architectures on 2012-11-04 -- Brooks --8vCeF2GUdMpe9ZbK Content-Type: application/pgp-signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.11 (FreeBSD) iD8DBQFQTlekXY6L6fI4GtQRAuwKAJ4/bCjiPFP2zZ3azflWrDv1xgwZlQCfeBVy E2GYj9wze230nn0uttWW1Ic= =ST1I -----END PGP SIGNATURE----- --8vCeF2GUdMpe9ZbK--