freebsd stable - Jan 2013 - src.conf question

Greetings

I will be upgrading my main desktop system from 8-stable to 9-stable
this week and am quite confused with regards to Clang vs GCC. I have
complete backups and will be doing a complete re-install.

I have seen several different examples of what to put
into /etc/src.conf and /etc/make.conf and am not sure if it is safe or
even advisable to make the move to Clang for source and ports.

Can someone help with this?

Thanks in advance

Robert

On Tue, 01 Jan 2013 15:44:16 +0100, Robert <traveling08 at cox.net> wrote:
> Greetings
>
> I will be upgrading my main desktop system from 8-stable to 9-stable
> this week and am quite confused with regards to Clang vs GCC. I have
> complete backups and will be doing a complete re-install.
>
> I have seen several different examples of what to put
> into /etc/src.conf and /etc/make.conf and am not sure if it is safe or
> even advisable to make the move to Clang for source and ports.
>
> Can someone help with this?
>
> Thanks in advance
>
> Robert
Clang in 9 works, but is not officially supported. If you are not sure I  
advise you to do the upgrade using the supported methods as described in  
/usr/src/UPDATING or the handbook[1].
After upgrading you can always change the default compiler to clang[2] and  
play with it from a known working state.

Ronald.

[1]  
http://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/updating-upgrading.html
[2] http://wiki.freebsd.org/BuildingFreeBSDWithClang

On Tue, Jan 01, 2013 at 06:44:16AM -0800, Robert wrote:
> ...
> I will be upgrading my main desktop system from 8-stable to 9-stable
> this week and am quite confused with regards to Clang vs GCC. I have
> complete backups and will be doing a complete re-install.
> 
> I have seen several different examples of what to put
> into /etc/src.conf and /etc/make.conf and am not sure if it is safe or
> even advisable to make the move to Clang for source and ports.
> 
> Can someone help with this?
> ...
Back around May, I migrated my stable/8 machines to stable/9.  At that
time, I also switched to clang from gcc for building the FreeBSD base
system.  (I expected quite a bit more "turbulence" were I to attempt
that with ports.)

Accordingly, I configured /etc/src.conf to read:

CC=clang
CXX=clang++
CPP=clang-cpp
WITH_LIBCPLUSPLUS=yes

and that has been working well for me since.  (Disclosure: I track
stable/9 daily, which is probably a higher frequency than most folks.
For that matter, I also track head daily on the same machine (different
slice).)

In any case, there are no problems I can ascribe to having done that.

Peace,
david
-- 
David H. Wolfskill				david at catwhisker.org
Taliban: Evil men with guns afraid of truth from a 14-year old girl.

See http://www.catwhisker.org/~david/publickey.gpg for my public key.
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