[TESTING]: ClangBSD branch needs testing before the import to HEAD

[Roman Divacky]

hi,

ClangBSD was updated to LLVM/clang revision 104832 which is what we aim to import
into HEAD in roughly a week. We would like the initial import to be as painless
as possible and therefore we ask you to test ClangBSD to assure that the revision
we are importing does not have some really embarassing bugs.

How to do it (on i386 and amd64):

0) install fresh devel/llvm-devel port

1) svn co http://svn.freebsd.org/base/projects/clangbsd src

2) echo NO_WERROR= >> /etc/src.conf ; echo WERROR= >> /etc/src.conf

3) cd src && make buildworld

4) make installworld DESTDIR=/usr/clangbsd

5) (optional) try to build kernel with clang and boot it

	5.1) cd /sys/{arch}/conf
	5.2) config YOUR_KERNEL
	5.3) setenv CC clang in tcsh or export CC=clang in bash
	5.4) cd ../compile/YOUR_KERNEL
	5.5) make && make install

please make sure that it builds (on amd64/i386) and that the resulting world
is runnable. ie. try to chroot into it and "do stuff". ie.

	chroot /clangbsd /bin/tcsh

	... stuff ...


there's a wiki page on this effort: http://wiki.freebsd.org/BuildingFreeBSDWithClang

please report back any problems/success to me and/or this mailing list. 

thank you for your testing!

Roman Divacky on behalf of the ClangBSD team
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