Clang now builds world and kernel, on i386 and amd64

Paul B Mahol onemda at
Sat Sep 25 19:45:54 UTC 2010

On 9/22/10, Dimitry Andric <dim at> wrote:
> Hi,
> As of r212979, you should now be able to build world and kernel on i386
> and amd64 with clang, without any additional patches!
> To do so, make sure you have updated your installed world to at least
> r212904 (which has the most recently imported clang/llvm snapshot), and
> put the following in /etc/src.conf:
> .if !defined(CC) || ${CC} == "cc"
> CC=clang
> .endif
> .if !defined(CXX) || ${CXX} == "c++"
> CXX=clang++
> .endif
> # Don't die on warnings
> Both world and kernel can also be installed, and should run properly,
> but please make sure you have a way to revert if anything unexpected
> happens. :)  Alternatively, just install into a chroot to try it out
> from there.
> Some additional information can be found on this wiki page:
> Thanks to all the people that made this possible, especially Roman
> Divacky, Ed Schouten, Rui Paulo, and of course the clang/llvm
> developers.

When to expect to get rid of GNU as and other binutils tools?

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