Date: Thu, 09 Jan 2014 19:36:51 +1030 From: Shane Ambler <FreeBSD@ShaneWare.Biz> To: RW <rwmaillists@googlemail.com>, freebsd-questions@freebsd.org Subject: Re: Can you switch from CLang back to gcc in FreeBSD 10.0 Message-ID: <52CE66AB.8050500@ShaneWare.Biz> In-Reply-To: <20140109014652.04f208bc@gumby.homeunix.com> References: <52CDB91E.4060107@fjl.co.uk> <20140108225833.4088ee56@gumby.homeunix.com> <52CDE131.90804@fjl.co.uk> <20140109014652.04f208bc@gumby.homeunix.com>
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On 09/01/2014 12:16, RW wrote: > On Wed, 08 Jan 2014 23:37:21 +0000 > Frank Leonhardt wrote: > >> On 08/01/2014 22:58, RW wrote: >>> On Wed, 08 Jan 2014 20:46:22 +0000 >>> Frank Leonhardt wrote: >>> >>>> I've been dreading this for over a year now. >>> Any particular reason why you have to build the base system with >>> gcc? >>> >>>> It's going to reach >>>> critical soon. FreeBSD 10 is dropping gcc in favour of Clang >>> >>> I don't think that's quite true: >>> >>> >>> <http://lists.freebsd.org/pipermail/freebsd-current/2013-September/044313.html>; >>> >> >> As I understand it (and I haven't tried it, hence my question), all >> that does is build gcc along with the other stuff. It doesn't make >> gcc the default (only) compiler. Sean's editing of /etc/make.conf >> goes some way >> - or even hacking sys.mk. However, /usr/bin/cc wouldn't be linked to >> gcc for a start, > > > I think the canonical way of building world with gcc is to set > WITHOUT_CLANG_IS_CC (it's discussed in the thread I quoted) there's > also WITHOUT_CLANG. In 10.0 WITHOUT_GCC and WITH_CLANG_IS_CC are the default. You can buildworld using WITH_GCC and WITH_GCC_IS_CC and even WITHOUT_CLANG (man src.conf lists options) but consider the age of gcc v4.2.1 -(C)2007- that get's installed, it doesn't know what a corei7 is and it doesn't have the other bug fixes included with the later 4.2.x releases. If you want to use gcc I would suggest using gcc46 or gcc48 rather than gcc from base.
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