Date: Mon, 27 Feb 2012 00:46:06 +0100 From: Pawel Worach <pawel.worach@gmail.com> To: Dimitry Andric <dim@FreeBSD.org> Cc: svn-src-head@freebsd.org, Alexander Best <arundel@freebsd.org>, svn-src-all@freebsd.org, src-committers@freebsd.org Subject: Re: svn commit: r232074 - head/sys/cam/ctl Message-ID: <EEDFDA7A-0D75-4CE0-99ED-DDD0E4516765@gmail.com> In-Reply-To: <4F476FEA.1090004@FreeBSD.org> References: <201202232134.q1NLYEq5024067@svn.freebsd.org> <20120224093807.GA88853@freebsd.org> <4F476FEA.1090004@FreeBSD.org>
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On Feb 24, 2012, at 12:09, Dimitry Andric wrote: > On 2012-02-24 10:38, Alexander Best wrote: >> is the clang version in base able to do complete universe builds for = i386 and >> amd64 without the need for NO_WERROR=3D and WERROR=3D now? >=20 > "universe" means all arches, and all kernel configs, so no. The = status > for head with clang is as follows: >=20 > - buildworld with default options, e.g. no WITH_XXX or WITHOUT_XXX > settings, will complete without any (fatal) warnings. > - buildkernel of the default GENERIC config still has one warning = left, > in sys/dev/mps/mps_sas.c. It should be simple to fix, but I'm > checking it with Ken first. > - The LINT kernel configs probably have many warnings left. I haven't > tested those extensively. >=20 > As soon as world & kernel compile without warnings, I'd like to have a > tinderbox that continually builds with clang. So head won't be > regressing any more. :) >=20 >=20 >> ps: are there any plans to add support for compiling kernel+userland = with clang >> tot? maybe this can be accomplished by doing something like >>=20 >> echo "WITH_CLANG_TOT=3Dyes" >> /etc/src.conf >=20 > I'm not working on this at the moment. Pawel Worach (CC'd) has a > buildbot setup that builds FreeBSD daily with clang ToT. Apparently > just a few patches are needed. You will find all the patches and hacks to build FreeBSD with llvm/clang = trunk here: http://llvm-amd64.freebsd.your.org/patches/ clang-*.diff contains the FreeBSD local changes, -fformat-extensions and = worldtmp prefix stuff. freebsd-*.diff contains the patches for FreeBSD to fix/disable -Werror = warnings found by clang trunk and needed hacks to the build infrastructure to use an out-of-tree = compiler. Just set CC and CXX to the *full path* of your custom version of clang. >> which will turn all -Wformat-invalid-specifier and = -Wformat-extra-args errors >> into warnings (because clang tot doesn't support = -fformat-extensions)? >=20 > It would be better to push our format extensions upstream, I think. > Though the option should probably be renamed to something else, e.g. > -ffreebsd-extensions, or such. --=20 Pawel
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