[Voyage-linux] Building modified madwifi for voyage

[David Murray]

Hi,

I am building a modified version of madwifi for the WRAP. I have never 
done this before so I am going to write how I have done it and maybe 
people might be able to point out where I have gone wrong.

First thing I did was follow the instructions [1] to build a emulated 
version of my WRAP/voyage install. This worked well and the 
instructions are really good :)

Upon logging into my emulated voyage I installed all of the build tools 
through apt including the kernel source. To go with the kernel source I 
need the correct .config file from [2]. First question: I am using the 
2.6.17 kernel, and I think I am using 2.6.17-486-voyage_3.0-3, but how 
do I know with certainty that I am using 3.0-3 and not 3.0-2 or 3.0-1. 
The next thing I did was a make menuconfig to configure the kernel 
prior to building it. I am not making any changes to the standard 
kernel so I left everything as is. following this I did a "make" (wait 
4 hours :).

After making the kernel I could then build madwifi with "make 
KERNELPATH=/usr/src/blah" Second question: why can you not just compile 
against the source? why do you have to build the kernel first? 
Following my make, madwifi built fine so I extracted the .ko modules 
copied them to my running WRAP. I then unloaded the running modules and 
replaced them with the new modules. Then "depmod -ae" and "modprobe 
ath_pci"

This gives me the following errors:

Error inserting ath_hal 
(/lib/modules/2.6.17-486-voyage/kernel/net/ath_hal.ko): Invalid module 
format
WARNING: Error inserting wlan 
(/lib/modules/2.6.17-486-voyage/kernel/net/wlan.ko): Invalid module 
format
FATAL: Error inserting ath_pci 
(/lib/modules/2.6.17-486-voyage/kernel/net/ath_pci.ko): Invalid module 
format

Does this suggest a mismatch between my kernel source and running 
kernel or gcc (eg the kernel source was built with a different gcc 
version to the one I got though apt)? Can anyone spot anything that I 
have done wrong?

Really appreciate the help

Dave

[1] http://wiki.voyage.hk/dokuwiki/doku.php?id=voyage_in_qemu
[2] http://www.voyage.hk/download/kernel_config/