freebsd stable - Sep 2010 - Can't build 8.1 GENERIC kernel

I'm trying to build a custom kernel, and I got an error. So I tried
GENERIC, in the perhaps old-fashioned way of 

    # config GENERIC
    # cd ../compile/GENERIC
    # make depend
    # make

and I get a complaint about a file named ``hack.So''. Here is what
happens if I remove it again to get it re-made:

$ sudo make
:> hack.c
cc -shared -nostdlib hack.c -o hack.So
rm -f hack.c
MAKE=make sh ../../../conf/newvers.sh GENERIC
cc -c -O2 -frename-registers -pipe -fno-strict-aliasing  -std=c99 -g -Wall
-Wredundant-decls -Wnested-externs -Wstrict-prototypes -Wmissing-prototypes
-Wpointer-arith -Winline -Wcast-qual  -Wundef -Wno-pointer-sign
-fformat-extensions -nostdinc  -I. -I../../..  -I../../../contrib/altq -D_KERNEL
-DHAVE_KERNEL_OPTION_HEADERS -include opt_global.h -fno-common
-finline-limit=8000 --param inline-unit-growth=100 --param
large-function-growth=1000 -fno-omit-frame-pointer -mcmodel=kernel -mno-red-zone
-mfpmath=387 -mno-sse -mno-sse2 -mno-sse3 -mno-mmx -mno-3dnow  -msoft-float
-fno-asynchronous-unwind-tables -ffreestanding -fstack-protector -Werror vers.c
linking kernel.debug
hack.So: could not read symbols: File in wrong format
*** Error code 1

Stop in /usr/src/sys/amd64/compile/GENERIC.

Am I the only one who is seeing this?

``file'' thinks this:
$ file hack.So
hack.So: ELF 64-bit LSB shared object, x86-64, version 1 (FreeBSD), dynamically
linked, not stripped

-Olaf.
--

Hi Olaf,

On 09/09/2010 16:17, Olaf Seibert wrote:
> I'm trying to build a custom kernel, and I got an error. So I tried
> GENERIC, in the perhaps old-fashioned way of
>
>      # config GENERIC
>      # cd ../compile/GENERIC
>      # make depend
>      # make
>
I don't know about the old-fashioned way, but the new way is:

# cd /usr/src
# make buildkernel KERNCONF=GENERIC
# make installkernel KERNCONF=GENERIC

The KERNCONF=GENERIC is redundant, because the GENERIC config is default.



Thomas

Thomas Ronner wrote:
> I don't know about the old-fashioned way, but the new way is:
> 
> # cd /usr/src
> # make buildkernel KERNCONF=GENERIC
> # make installkernel KERNCONF=GENERIC
Thank you, that worked.

I wonder what the underlying difference is; probably something fairly
subtle. The same hack.So file was generated (byte for byte identical).
And something changed between 8.0 and 8.1, since previously, the
old-fashioned method worked.

-Olaf.
--