Compiling BETA2 with clang fails

[Hartmann, O.]

On 09/06/11 00:14, Olivier Smedts wrote:
> 2011/9/6 Olivier Smedts<olivier at gid0.org>:
>> 2011/9/6 Volodymyr Kostyrko<c.kworr at gmail.com>:
>>> 05.09.2011 10:43, Olivier Smedts wrote:
>>>
>>>>> ===>    libexec/atrun (all)
>>>>> clang -O2 -pipe -march=native -DATJOB_DIR=\"/var/at/jobs/\"
>>>>> -DLFILE=\"/var/at/jobs/.lockfile\"  -DLOADAVG_MX=1.5
>>>>> -DATSPOOL_DIR=\"/var/at/spool\"  -DVERSION=\"2.9\" -DDAEMON_UID=1
>>>>> -DDAEMON_GID=1  -DDEFAULT_BATCH_QUEUE=\'E\'  -DDEFAULT_AT_QUEUE=\'c\'
>>>>> -DPERM_PATH=\"/var/at/\" -I/usr/src/libexec/atrun/../../usr.bin/at
>>>>> -I/usr/src/libexec/atrun -DLOGIN_CAP -DPAM -std=gnu99 -fstack-protector
>>>>> -Wsystem-headers -Wall -Wno-format-y2k -Wno-uninitialized
>>>>> -Wno-pointer-sign
>>>>> -c /usr/src/libexec/atrun/atrun.c
>>>> Try removing "-march=native" from your CFLAGS.
>>>>
>>>> I have the exact same problem since months on my Core i7 CPU when
>>>> using "-march=native" or "-march=corei7". No problems for me with
>>>> "-march=core2" though.
>>> It so nice you have noted that. I'll be much happier if you also spare some
>>> time reading my previous emails.
>> Or you could search this mailing list for the exact same problem
>> reported some time ago.
> Sorry for double-post. My point was : this does not seem to be a
> buildworld problem, but rather a clang problem with coreiX's latest
> instructions. Should be reported upstream IMO.
>
On my Dell Latitude E6510 notebook, equipted with one of the former
Core-i5 "Lynnfield" CPUs, I got into a even worse situation. I can build the
whole system with -march=native (buildworld), install it and at least 
run it.
But then in multiuser mode, hitting the tab key, always ends up in a forced
logout (it is  with every shell, but only in multiuser mode, noct when 
starting
the box in single user mode).

Well, so far. Thought it was a fair chance, tried to revert what I've 
done and start
compiling the OS again with either -march=core2 ore simply omit this. No 
chance!
Shortly after start building world, I receive a weird error that cc1 
failed compiling something,
I need to make a report. When switching back to the legacy gcc 4.2, the 
same error
occurs.
The system isn't usable anymore. The OS is instable, hitting TAB key 
always ends up "logged out".
I guess the only way to revert this is to install the box from scratch. 
I tried installing
a base system from an installation DVD, it works so far.

Oliver