error compiling kernel

[messmate]

On Sat, 4 Sep 2004 02:03:26 +0400
Sergey Zaharchenko <doublef at tele-kom.ru> wrote:

>On Fri, Sep 03, 2004 at 09:40:35PM +0200,
> messmate probably wrote:
>> Hello,
>> to setup the pf firewall had to compile 
>> a new kernel.
>> So added the options, compile and get this error :
>> gensetdefs:  kern_synch.o: not an ELF file
>> gensetdefs:  sys.pipe.o:  not an ELF ile
>
>Try doing a make clean before the make buildkernel.
>
Ok, it's done and runnung :)

>Erm, has pf been backported to 4.x yet?
>
I CVS pf from 4_10 but it's only for ver.5 or above ???
What does this mean ?
Thanks
mess-mate