got module.o but need module.ko

[stappers@stappers.nl (Geert Stappers)]

Hello,

This is what I did

 apt-get source linux-image-2.6
 cd linux-2.6-2.6.17
 cp /boot/config-2.6.17-1-powerpc .config
 make oldconfig
 make sound/  # I only want the sound modules


I get sound/module.o and also
insmod: error inserting './module.o': -1 Invalid module format

What is needed to get  sound/module.ko ?


Cheers
Geert Stappers