Re: Kernel compilation failure ...

Wojciech A. Koszek wrote:
> On Mon, May 21, 2007 at 09:51:52AM +0200, Claus Guttesen wrote:
>>> I am running -CURRENT on my desktop, csup-ped sources even today
>>> - 20070521.
>>> For the last one week or so, I cannot successfully compile a kernel.
>>> Always fails here:
>>>
>>> <cut>
>>> cc -shared -nostdlib hack.c -o hack.So
>>> rm -f hack.c
>>> MAKE=make sh /usr/src/sys/conf/newvers.sh alligator
>>> cc -c -O -pipe  -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/usr/src/sys -I/usr/src/sys/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  -mno-align-long-strings 
>>> -mpreferred-stack-boundary=2  -mno-mmx -mno-3dnow -mno-sse -mno-sse2 
>>> -mno-sse3 -ffreestanding   vers.c
>>> linking kernel.debug
>>> if_ural.o(.text+0xe8f): In function `ural_attach':
>>> /usr/src/sys/dev/usb/if_ural.c:491: undefined reference to 
>>> `ieee80211_amrr_init'
>>> if_ural.o(.text+0x2fa5): In function `ural_task':
>>> /usr/src/sys/dev/usb/if_ural.c:2360: undefined reference to 
>>> `ieee80211_amrr_node_init'
>>> if_ural.o(.text+0x3179): In function `ural_amrr_update':
>>> /usr/src/sys/dev/usb/if_ural.c:2418: undefined reference to 
>>> `ieee80211_amrr_choose'
>>> *** Error code 1
>> Something with a wireless usb-card in your kernel-config maybe? Is it
>> ALLIGATOR a copy of GENERIC or customized?
> 
> Presence of ural(4) and lack of the wireless support seems to be the
> cause of the problem. Try to check if you have wlan(4) present.
> 

This is the most comment cause for error in compiling custom kernels 
I've seen (the OP is around the 20th person I've seen while 
semi-actively watching the lists for the past year or so).

I think that the questions and current lists should have FAQs about this 
particular "error", or maybe the example GENERIC kernel config file 
should move ural to the wlan section and have a big warning posted next 
to it stating "ural requires both USB and wlan support".

Just my thought though on the subject..

-Garrett