vmlinuz no symtab? while cross compiling...

I'm attempting to cross compile linux-2.6.8.1, along with a few external modules (madwifi, hostap-driver, aodv-uu). The kernel and (built-in) modules compile fine, but compiling every one of those external modules fails around MODPOST. For example, aodv-uu:

<snip userspace stuff>
make -C /home/janderson/var/autobuild/i386/root/usr/src/linux SUBDIRS=/home/janderson/var/tmp/autobuild/aodv-uu-0.8.1 modules
i486-linux-uclibc-gcc -Wall -O2 -DCONFIG_GATEWAY -o aodvd main.o list.o debug.o timer_queue.o aodv_socket.o aodv_hello.o aodv_neighbor.o aodv_timeout.o routing_table.o seek_list.o k_route.o aodv_rreq.o aodv_rrep.o aodv_rerr.o packet_input.o packet_queue.o libipq.o icmp.o min_ipenc.o locality.o make[1]: Entering directory `/home/janderson/var/autobuild/i386/root/usr/src/linux-2.6.8.1'
CC [M] /home/janderson/var/tmp/autobuild/aodv-uu-0.8.1/kaodv.o
Building modules, stage 2.
MODPOST
modpost: vmlinux no symtab?
/bin/sh: line 1: 798 Aborted scripts/mod/modpost -i /home/janderson/var/autobuild/i386/root/usr/src/linux-2.6.8.1/Module.symvers vmlinux /home/janderson/var/tmp/autobuild/aodv-uu-0.8.1/kaodv.o
make[2]: *** [__modpost] Error 134

madwifi and hostap-driver do the same thing: "vmlinux no symtab?".

I've messed around with cleaning out the scripts/mod directory, then running a make prepare (which seems to rebuild modpost), but that makes no difference.

For the moment, I can work around this (because I'm "cross compiling" for i486 on an i686 system) by just running make again in the kernel directory, but I would assume that wouldn't work when I have to do it for ppc. :-)

I guess I'm just looking for any information that might help me get rid of this error. Any pointers would be most welcome.

(Hopefully this is the right place to be posting such questions - if it's not, then I appologize.)

Cheers,

jon

Took a look at aodv-uu.
Author should learn to create a real Kbuild Makefile... But that does not seem to be your problem.

modpost complains that it cannot locate the symbol table in vmlinux. That can be caused by the following reasons:

o vmlinux were build with different settings than scripts/mod
- If you cleaned out scripts/mod/ and run make scripts with wrong ARCH options
o vmlinux has been stripped for some reason

Did not understand what you said here.

Please make sure that:
- Kernel is build with same ARCH=, CROSS_COMPILE option as modules
- That kernel is fully build, with same options

Please let me know if this info helped you fixing the problem.

Sam

Actually it was not that bad for 2.6 - but 2.4 could use some help.

The last item on the list was the culprint in this case.

Sam