How does one install kernel sources and base

[Benjamin Kaduk]

On Tue, 20 Sep 2011, Michal Varga wrote:

> On Mon, 2011-09-19 at 19:22 -0500, Antonio Olivares wrote:
>> Michal,
>>
>> Thank you very much for your detailed instruction.  I was able to get
>> all of the sources and built nvidia driver successfully :)
>>
>> However, when I run kldload nvidia, I get a mismatch with the running
>> kernel and an incompatible ?????.  I cannot post exact error as the
>> machine gives me no X :(, I checked to see if enabling hald and dbus
>> at /etc/rc.conf would make a difference and they have not :(, I have
>> also tried nouveau and it also does not work.  No working X on FreeBSD
>> 9.0 BETA 2 amd64, ports updated to latest, xorg, xorg-server, xfce4,
>> ... I will post in the thread I created on this issue.
>>
>> Regards,
>>
>> Antonio
>
> Some details about the "incompatible ?????" error would be quite useful
> as without an actual (and exact) error message it's only guessing...
>
> But it is possible that your downloaded (latest -HEAD) sources are no
> longer compatible with your currently running OS, though there being
> like about a week difference, I find it somewhat unlikely (but always
> possible).

It is in fact quite likely, as a bunch of kernel functions corresponding 
to system calls have been renamed in the interim by kmacy, around r225617.

I believe the quoted text below to be accurate, for the OPs choice of 
actions.

-Ben Kaduk

>
> If that's the case, you have two possible routes to take:
>
> You can either bring your system up to date corresponding to the latest
> sources; that is, rebuilding and installing new FreeBSD kernel and
> world. That should get rid of any incompatibilities you currently
> experience. It's a pretty straightforward process which in your case
> amounts to just about -
>
> # cd /usr/src
> # make buildworld installworld kernel
>
> - but note that the above mentioned IS NOT an officially supported
> procedure and you are first REQUIRED to read FreeBSD Handbook and
> understand the basics of building and updating FreeBSD. I just mention
> it to illustrate how simple the procedure generally is. But again, don't
> run it blindly. When unsure, always use the officially supported, while
> somewhat lenghtier, procedure described in FreeBSD Handbook.
>
> Now the other possible route that doesn't involve building and updating
> FreeBSD at all, is to download the sources that closely match your
> currently running system.
>
> As far as I know (and I wasn't able to find), there is no CVS tag for
> BETA2, so you can't pull the exact sources that way, but you should be
> able to get very close with:
>
> $ uname -a
>
> - and notice when the kernel was built, which was hopefully very close
> to the time when the sources were pulled from CVS (this is more or less
> only a guess, so someone involved in release engineering might be of
> more help with this issue, if there even is any).
>
> To do this, you just need to edit your supfile and include the specific
> date from when to pull the sources:
>
> That is, replacing the line:
>
> *default release=cvs tag=.
>
> With:
>
> *default release=cvs tag=. date=2011.09.??.??.??.??
>
> (Just fill in the missing dd, hh, mm, ss values based on the date you
> already know from uname.)
>
> This modified supfile will let you pull sources that should be a very
> close - if not perfect - match to your current system. You can then
> rebuild your drivers (i.e. that non-working nvidia module) the regular
> way. By my humble estimate, that should be enough to fix your issue.
>
> m.
>
>
> -- 
> Michal Varga,
> Stonehenge (Gmail account)
>
>
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