Re: Clang now builds world and kernel, on i386 and amd64

* Renato Botelho <rbgarga_at_gmail.com> [100928 20:20]:
> On Tue, Sep 28, 2010 at 6:07 PM, Renato Botelho <rbgarga_at_gmail.com> wrote:
> > On Wed, Sep 22, 2010 at 3:42 AM, Dimitry Andric <dim_at_freebsd.org> 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
> >> NO_WERROR=
> >> WERROR=
> >>
> >> 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:
> >>
> >> http://wiki.freebsd.org/BuildingFreeBSDWithClang
> >>
> >> Thanks to all the people that made this possible, especially Roman
> >> Divacky, Ed Schouten, Rui Paulo, and of course the clang/llvm
> >> developers.
> >
> > I built my desktop world + kernel with clang, rev. 213247 amd64, it
> > booted perfectly, the only problem i got was something went wrong
> > with a perl module File::Temp.
> >
> > To be sure it's related i'm rebuilding the src (same rev.) with gcc and
> > will take a look if it will back to work. I'll send an email after testing.
> >
> > Just to show, the problem i got with perl was using this code:
> >
> > #!/usr/bin/perl
> >
> > use File::Temp;
> >
> > my ( $fh, $filename ) = File::Temp::tempfile();
> > print "$filename\n";
> > unlink $filename;
> >
> > with this results:
> >
> > Error in tempfile() using /tmp/XXXXXXXXXX: Tried to get a new temp
> > name different to the previous value 50 times.
> > Something wrong with template?? (/tmp/XXXXXXXXXX) at testes/tmp.pl line 5
> 
> After rebuild world+kernel with gcc and reboot everything
> back to normal:
> 
> garga_at_botelhor:~> perl testes/tmp.pl
> /tmp/MfmvMiztew
> garga_at_botelhor:~> perl testes/tmp.pl
> /tmp/M4xIxsTxlc
> 
> I'm using perl-5.12.2_2
> 
> -- 
> Renato Botelho
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A test shell script using mktemp (1) works fine on current built with
clang today.  The clang case produces a filename with all "A"'s rather
than the random letters expected. 
-- 
Best regards,
Derek Tattersall
dlt_at_mebtel.net		dlt666_at_yahoo.com		 dtatters_at_gmail.com