Date: Mon, 28 Apr 2014 06:03:29 -0600 From: Ian Lepore <ian@FreeBSD.org> To: Julian Elischer <julian@FreeBSD.org>, Warner Losh <imp@bsdimp.com> Cc: FreeBSD Current <current@FreeBSD.org> Subject: Re: options for forcing use of GCC vs CLANG Message-ID: <1398686609.61646.200.camel@revolution.hippie.lan> In-Reply-To: <535DF978.9090102@freebsd.org> References: <535D1350.4000106@freebsd.org> <1398616234.61646.155.camel@revolution.hippie.lan> <535DF978.9090102@freebsd.org>
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On Mon, 2014-04-28 at 14:47 +0800, Julian Elischer wrote: > On 4/28/14, 12:30 AM, Ian Lepore wrote: > > On Sun, 2014-04-27 at 22:25 +0800, Julian Elischer wrote: > >> I need to hold off using CLANG for a while at $JOB. We are moving to a > >> newer FBSD in the vicinity of 10.0 but we need to keep the gcc in hte > >> picture for a bit longer before switching. What options do I put into > >> various /etc/make.conf to keep CLANG out ofhte picture until we are > >> ready for it? > >> > >> From reading various posts I see: > >> WITHOUT_CLANG="yes" > >> CC=gcc > >> CXX=g++ > >> CPP=gcc -E > >> but that doesn't seem complete to me. > >> > >> For now I want to not compile clang in our official build environment. > >> (and obviously not use it until we are ready for it later this year.) > >> > >> What other hooks do I need to set? > >> > >> Julian > > We've got the same situation at work. What I'm using right now to build > > 11-current @ r264151 is this: > > > > WITH_GCC=yes \ > > WITH_GNUCXX=yes \ > > WITHOUT_CLANG=yes \ > > WITHOUT_CLANG_IS_CC=yes \ > > > > But that's now several weeks out of date, and there are two new knobs I > > haven't investigated yet: WITH_CLANG_BOOTSTRAP and WITH_GCC_BOOTSTRAP. > > > > -- Ian > > > > > > > > > > Thanks Ian. > Can soneone who is driving this please chime in? I will need to keep > GCC on systems from 9.0 to 10.1 (and various points in between on the > -current lineage). Will the lines above work for that whole range? or > did it change over time? > I expect to flip the CLANG switch sometime around the time when we > slide on to 10.1 or so. > Adding Warner, since he's the one doing the work on this stuff. -- Ian
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